Original Article
Calcium Supplements for the Prevention of Colorectal Adenomas
N Engl J Med 1999; 340:101-107January 14, 1999
- Abstract
Background and Methods
Laboratory, clinical, and epidemiologic evidence suggests that calcium may help prevent colorectal adenomas. We conducted a randomized, double-blind trial of the effect of supplementation with calcium carbonate on the recurrence of colorectal adenomas. We randomly assigned 930 subjects (mean age, 61 years; 72 percent men) with a recent history of colorectal adenomas to receive either calcium carbonate (3 g [1200 mg of elemental calcium] daily) or placebo, with follow-up colonoscopies one and four years after the qualifying examination. The primary end point was the proportion of subjects in whom at least one adenoma was detected after the first follow-up endoscopy but up to (and including) the second follow-up examination. Risk ratios for the recurrence of adenomas were adjusted for age, sex, lifetime number of adenomas before the study, clinical center, and length of the surveillance period.
Results
The subjects in the calcium group had a lower risk of recurrent adenomas. Among the 913 subjects who underwent at least one study colonoscopy, the adjusted risk ratio for any recurrence of adenoma with calcium as compared with placebo was 0.85 (95 percent confidence interval, 0.74 to 0.98; P=0.03). The main analysis was based on the 832 subjects (409 in the calcium group and 423 in the placebo group) who completed both follow-up examinations. At least one adenoma was diagnosed between the first and second follow-up endoscopies in 127 subjects in the calcium group (31 percent) and 159 subjects in the placebo group (38 percent); the adjusted risk ratio was 0.81 (95 percent confidence interval, 0.67 to 0.99; P=0.04). The adjusted ratio of the average number of adenomas in the calcium group to that in the placebo group was 0.76 (95 percent confidence interval, 0.60 to 0.96; P=0.02). The effect of calcium was independent of initial dietary fat and calcium intake.
Conclusions
Calcium supplementation is associated with a significant — though moderate — reduction in the risk of recurrent colorectal adenomas.
Media in This Article
Table 1
Base-Line Characteristics of the 930 Subjects.Table 2
Numbers of Study Subjects Who Completed the Study Examinations.Article Activity
- Article
Dietary patterns have repeatedly been associated with the risk of colorectal neoplasia: a diet rich in vegetables and fruits is associated with a lower risk, whereas intake of animal fat and red meat seems to increase risk.1 The underlying mechanisms are not clear, but the changes in risk may in part be due to alterations in bile acids, which are carcinogenic in animal models.2
Newmark and colleagues3 proposed that calcium binds bile acids in the bowel lumen, inhibiting their proliferative and carcinogenic effects. In support of this hypothesis, studies in animals have indicated a protective effect of dietary calcium on bile-induced mucosal damage and experimental bowel carcinogenesis.4,5 However, the results of epidemiologic research have been inconsistent; in some studies a decreased risk of colorectal cancer was associated with calcium intake, whereas in others no association was found.6,7 Mixed results have also been reported regarding large-bowel adenomas,6,7 which are likely precursors of most colorectal cancers.8
To clarify the effect of calcium intake on colorectal carcinogenesis, we conducted a clinical study of the effect of supplementation with calcium carbonate on the risk of recurrence of colorectal adenomas. We hypothesized that subjects randomly assigned to receive calcium would have a reduced risk of recurrent adenomas as well as reduced numbers of adenomas.
Methods
The Calcium Polyp Prevention Study involved six clinical centers: the Cleveland Clinic Foundation, Dartmouth–Hitchcock Medical Center, the University of Southern California–Southern California Permanente Medical Group, the University of Iowa, the University of Minnesota, and the University of North Carolina. Dartmouth was the coordinating center, and the University of Minnesota was the pathology center. Human-subjects committees at each center approved the study protocol; an independent data and safety monitoring committee reviewed the study twice a year.
Recruitment and Randomization
Staff at each clinical center monitored colonoscopy and pathology records at associated endoscopy units to identify subjects who had at least one histologically confirmed large-bowel adenoma removed within three months before recruitment and whose entire large-bowel mucosa was subsequently examined and judged free of polyps. Eligible subjects were less than 80 years old, in good health, and without a history of familial polyposis, invasive large-bowel cancer, malabsorption syndromes, or any condition that might be worsened by supplemental calcium. Our goal was for 860 subjects to undergo randomization in order for the study to have 80 percent power to detect a 25 percent reduction in the recurrence of adenomas.
We reviewed data on 2918 apparently eligible subjects. We were unable to contact 223, 1066 declined to participate, 510 were found to be ineligible, and 1 did not enroll for unknown reasons. After written informed consent had been obtained, the remaining 1118 subjects began a three-month placebo run-in period to assess their adherence to the study regimen of one tablet twice a day with meals. At the end of the run-in period, 930 subjects had taken at least 80 percent of their prescribed tablets, wished to continue the study, and were considered appropriate for randomization. We assigned these subjects to calcium or placebo using computer-generated random numbers, blocked according to study center. The study tablets contained a total of 3 g of calcium carbonate (1200 mg of elemental calcium) or an identical-appearing cellulose–sucrose placebo. The trial was double-blind: neither subjects nor study staff were aware of the treatment assignments.
Study Protocol
The subjects underwent two follow-up colonoscopies as part of their routine clinical care, usually by the same physician who had conducted the initial examination. The first follow-up examination was planned for approximately 1 year after the qualifying colonoscopy (about 9 months after randomization), and the second follow-up examination was planned for 36 months after that. Large-bowel endoscopy was otherwise discouraged unless clinically indicated (e.g., for rectal bleeding). Follow-up examinations were considered adequate if the entire large-bowel mucosa was visualized and no polyps remained at the end of the procedure. We designated the time from randomization to the first follow-up examination as the first study interval, and the period following the first follow-up examination and through the second as the second study interval (the main risk period).
At each colonoscopy, the endoscopist recorded the size and location of all mucosal lesions, using standard clinical technique. According to the protocol, all polyps were removed and examined histologically at the clinical center and by the study pathologist, who classified the polyps as neoplastic (adenomas) or non-neoplastic (e.g., hyperplastic polyps or lymphoid follicles). The study pathologist also reviewed polyps detected by the qualifying endoscopic examination for a sample of 25 percent of the subjects. The study pathologist and the clinical center agreed as to presence or absence of neoplasia in 2349 of the 2541 specimens reviewed (92 percent). In cases of disagreement, we accepted the study pathologist's diagnosis.
At enrollment and at the time of each of the two follow-up colonoscopies, we obtained specimens of venous blood in mineral-free tubes. Serum was initially stored at –20°C or below, pending shipment to Dartmouth for storage at –70°C until analysis. At enrollment and at the end of the study, we also assessed the subjects' diet with a validated food-frequency questionnaire.9 Every six months, we sent questionnaires to the subjects regarding their adherence to study treatment; their use of medications, over-the-counter drugs, and nutritional supplements; and the occurrence of symptoms, illnesses, and hospitalizations. Recruitment began in November 1988 and ended in April 1992. Follow-up ended in December 1996.
End Points
The primary outcome measure was the proportion of subjects in whom at least one adenoma was detected during the second study interval — that is, after the first follow-up colonoscopy, up to and including the second follow-up examination (including adenomas detected during interim endoscopies). This end point provided for the removal of adenomas overlooked at the qualifying colonoscopy (thus minimizing the numbers of polyps present at the start of the main risk period) and allowed for a latent period of calcium action. If a subject did not undergo the follow-up examinations as planned, we used the two clinically indicated colonoscopies at least one year apart that provided the longest follow-up interval.
Statistical Analysis
For our statistical analyses, we compared proportions using Fisher's exact test and measured data using t-tests or rank tests.10 Our main analysis considered two related outcomes: whether subjects in the two treatment groups had different probabilities of having at least one adenoma, and whether the average numbers of adenomas in the two groups differed. To address the first question, we used overdispersed log-linear quasi-likelihood models programmed in SPlus (MathSoft, Seattle) to provide unadjusted and adjusted estimates and confidence intervals for the relative risk of at least one recurrent adenoma.11 Similar models (with variance proportional to the mean) were used to analyze the ratios of the average number of adenomas in the two treatment groups.11
Covariates included age (as a linear term), sex, the lifetime number of adenomas before study entry, clinical center, and the length of the surveillance period. Possible interactions were considered with the use of product interaction terms. Subgroup analyses included investigation of subjects whose diets were above and below the median for the calorie-adjusted intake12 of selected nutrients. To assess possible distortions introduced by subjects who did not complete the study, we also performed sensitivity analyses by imputing patterns of recurrence for these subjects to determine outcomes that would have altered our conclusions, had they been observed. All P values were two-sided; P<0.05 was taken to indicate significance.
Results
A total of 930 subjects, whose characteristics are summarized in Table 1Table 1
Base-Line Characteristics of the 930 Subjects., underwent randomization; there were no significant differences between the two treatment groups in demographic characteristics, dietary patterns, or history of adenomas. The mean (±SD) age was 61±9 years, and 72 percent were men. Most subjects had had only one or two adenomas removed from the large bowel before entering the study. The mean estimated diameter of the largest qualifying adenoma was 0.7±0.6 cm; in the sample sent for pathological review, 99 percent of the specimens had mild or moderate atypia. The mean estimated daily dietary intake of calcium at study entry was similar in the two study groups and was less than three quarters of the amount later provided in the form of supplements by the study intervention. Fewer than 3 percent of the subjects were taking calcium supplements at the start of the trial; all agreed to discontinue them during the study.Of the 930 subjects who underwent randomization, 832 (89 percent) completed two follow-up colonoscopies (Table 2Table 2
Numbers of Study Subjects Who Completed the Study Examinations.). We could not include 98 subjects (43 in the placebo group and 55 in the calcium group) in the main analyses: 47 died, 25 no longer wished to participate, 18 could not be examined because they were too ill or had moved, and 8 dropped out for unknown reasons. In addition to the study-mandated colonoscopies, an interval colonoscopy or sigmoidoscopy was performed during the main risk period (second study interval) in 86 subjects. The proportions of subjects with inadequate study colonoscopies or with interim endoscopies did not differ significantly between the treatment groups (Table 2).Self-reported adherence to the study regimen gradually declined during the trial (Table 3Table 3
Self-Reported Adherence to Study Treatment, According to Treatment Assignment and Study Year.). Nevertheless, even during the fourth year, over 80 percent of the subjects took the study agents 90 to 100 percent of the time, and a further 7 percent took them 50 to 89 percent of the time. Use of supplemental calcium was reported at least once by only 19 subjects (2 percent) during the study (9 in the placebo group and 10 in the calcium group).Among the 832 subjects who completed the study, at least one colorectal adenoma was diagnosed during the main risk period (the second study interval) in 127 subjects in the calcium group (31 percent) and 159 subjects in the placebo group (38 percent) (Table 4Table 4
Outcomes with Respect to Recurrence of Adenomas.). The mean size of the largest adenoma was the same in the two groups (0.4 cm; P=0.43), but more adenomas were found in the placebo group (mean number per patient, 0.73 vs. 0.55; P=0.03). The unadjusted risk ratio for having at least one adenoma in the calcium group as compared with the placebo group was 0.83 (95 percent confidence interval, 0.68 to 1.00; P=0.05); after adjustment the risk ratio was 0.81 (95 percent confidence interval, 0.67 to 0.99; P=0.04). The unadjusted ratio of the average number of adenomas in the calcium group to that in the placebo group was 0.75 (95 percent confidence interval, 0.58 to 0.97; P=0.03); after adjustment it was 0.76 (95 percent confidence interval, 0.60 to 0.96; P=0.02). During the main risk period, invasive large-bowel cancer was found in four subjects (three in the placebo group and one in the calcium group), but no adenomas with severe atypia were found (P=0.62 for the difference in the proportions with severe atypia or cancer). Analysis of adenomas detected at the second follow-up examination (excluding findings on interval endoscopies) showed similar results (Table 4).A similar effect of calcium was found during the first study interval. Among the subjects who completed the trial, at least one adenoma was found in the period up to and including the first follow-up examination in 103 subjects in the calcium group (25 percent) and 138 subjects in the placebo group (33 percent) (Table 4). The unadjusted risk ratio for at least one adenoma in this early interval was 0.77 (95 percent confidence interval, 0.62 to 0.96; P=0.02); the unadjusted ratio of the average numbers of adenomas was 0.73 (95 percent confidence interval, 0.54 to 0.97; P=0.03). These estimates were virtually unchanged after multivariate adjustment. Analysis of adenomas detected at the first follow-up examination yielded similar findings. At or before the first follow-up examination, invasive cancer was found in four subjects (two in the calcium group and two in the placebo group), and an adenoma with severe atypia was removed from one subject in each group.
A total of 913 subjects underwent at least one study colonoscopy. The unadjusted risk ratio for having at least one adenoma after randomization was 0.85 (95 percent confidence interval, 0.74 to 0.98; P=0.03); the corresponding ratio of the average numbers of adenomas was 0.74 (95 percent confidence interval, 0.59 to 0.92; P<0.001). Restriction of the analysis to adenomas detected at study follow-up examinations and adjustment for age, clinical center, sex, length of the surveillance period, and number of previous adenomas left these estimates substantially unchanged (Table 4).
We also assessed whether the effect of calcium supplementation differed according to the size or location of the adenomas. During the second study interval, an adenoma 0.5 cm or greater in diameter was found in 120 subjects (63 in the placebo group and 57 in the calcium group); the unadjusted risk ratio for having at least one adenoma of this size was 0.87 (95 percent confidence interval, 0.63 to 1.21; P= 0.70). In 166 subjects, the largest adenoma was less than 0.5 cm in diameter (96 in the placebo group and 70 in the calcium group); the corresponding unadjusted risk ratio was 0.75 (95 percent confidence interval, 0.57 to 0.98; P=0.03). During the second interval, 144 subjects had at least one adenoma in the splenic flexure or more distally, and 200 had at least one adenoma proximal to the splenic flexure. Calcium had a similar effect on the recurrence of adenoma in both regions of the bowel (data not shown).
The sensitivity analysis suggested that it is extremely unlikely that the outcomes of the 98 subjects who did not complete the study would have nullified our findings had they been able to be included. Among these subjects, recurrent adenomas would have had to be at least twice as frequent in the calcium group as in the placebo group to eliminate the statistical significance of the overall effect of calcium.
There was no evidence of modification of the effect of calcium by age, sex, or base-line dietary intake of calcium, fat, or fiber (data not shown). The effect of calcium was nonsignificantly stronger among subjects who reported taking all their study agents and among those who did not report any use of aspirin or other nonsteroidal antiinflammatory drugs (data not shown).
Medical symptoms and complications were not associated with treatment assignment. Similar proportions of subjects in the calcium and placebo groups were hospitalized for any reason, were hospitalized with cancer, or stopped treatment because of perceived side effects (Table 5Table 5
Medical Events after Randomization.). The frequency of digestive symptoms (including constipation) did not differ substantially between the two treatment groups. Two subjects assigned to calcium and one assigned to placebo were found to have definite or probable urinary stones during the study.Discussion
In this randomized, clinical trial, assignment to calcium supplementation was associated with a significant — though moderate — reduction in the risk of recurrent adenomas. The reduced risk became apparent as early as the first colonoscopic follow-up, after approximately nine months of treatment. There was no indication of a greater effect among subjects with a low base-line dietary intake of calcium or a high intake of fat. The intervention was well accepted and without major toxicity.
Epidemiologic data regarding the association between dietary calcium and the risk of colorectal cancer have varied considerably but in the aggregate are consistent with the effect we observed.6,7 Many studies13-18 found at least suggestions of an inverse association, but others found no relation19,20 or even the possibility of an increased risk with higher intake.21,22 The results of investigations of calcium intake and the risk of colorectal adenomas have also been conflicting,20,23-25 as have those of studies that considered calcium supplementation separately.16,21,26
These mixed findings may reflect the difficulties of dietary epidemiology. The effects of calcium intake are likely to be confounded by factors such as intake of calories, dietary fat, and phosphate and perhaps use of vitamin and mineral supplements, aspirin, or other agents with anticarcinogenic effects. Moreover, the measurement error inherent in dietary assessment would tend to obscure any association between calcium intake and the risk of neoplasia.12
Extensive research in animals supports the existence of an antineoplastic effect of calcium in the large bowel. Calcium inhibits the mucosal injury and hyperproliferation induced by bile acids or carcinogens,4 and most studies that used high-fat diets reported a lower incidence of tumors with supplementation.4,5 Effects of calcium have been absent or less pronounced among animals fed low-fat diets.27,28 One experimental study suggested that dietary calcium particularly inhibited tumors with ras mutations,29 and a recent epidemiologic study reported similar effects.30
Previously published trials of calcium supplementation have focused on biologic markers; some of these studies have supported the hypothesis that calcium may act through precipitation of bile acids or stool fatty acids, perhaps in complexes with calcium phosphate.31 Calcium supplementation has been observed to reduce the cytotoxicity of fecal water, reduce the proportion of secondary bile acids in the bile acid pool, and reduce fecal bile acid concentrations.31-34 However, other studies have not suggested such benefits, reporting no change35,36 or an actual increase37,38 in the concentration of bile acids in the water phase of stool. The results of studies of the effect of calcium on rectal mucosal proliferation have been conflicting.32,36,37,39-43
Our trial focused on the recurrence of adenomas over a four-year period. Therefore, it does not directly address whether calcium supplementation affects the risk of a first adenoma or of progression to invasive cancer. Still, the similarity of risk factors for colorectal cancer, recurrent adenomas, and first adenomas44 suggests that an agent that affects early stages of neoplasia in the bowel may well have implications for more advanced neoplasia. On the other hand, our data may suggest that calcium supplementation has a weaker effect on larger adenomas than on smaller ones, a pattern consistent with a limited efficacy of supplementation in patients with more advanced neoplasia.
Other unresolved issues are the timing and persistence of the antineoplastic action of calcium. In our trial, a reduction in the risk of recurrent adenomas became evident less than a year after randomization, but the effect did not become stronger with time. Conceivably, an increasing efficacy of treatment over time was counterbalanced by decreasing compliance. Studies with longer treatment and follow-up periods are needed to clarify these issues.
Our data provide evidence that calcium carbonate may have chemopreventive activity against colorectal neoplasia. The effect we found is consistent with epidemiologic data and is supported by a large body of experimental data in humans and in animals. Since the toxicity of this simple and inexpensive agent appears to be minimal, and since it may have other benefits (e.g., reduction in the risk of osteoporosis45), its risk–benefit balance may be favorable. However, before a general recommendation can confidently be made, it would be desirable to confirm these findings, obtain more information about effects on actual cancers or severe dysplasia, and document the risk–benefit balance in various population groups.
Supported in part by grants (CA37287 and CA23108) from the National Institutes of Health. Calcium and placebo tablets were provided by Lederle (now Whitehall–Robins), Pearl River, N.Y.
We are indebted to the study subjects and their physicians for their cooperation and enthusiasm, and to the study coordinators at the clinical sites and the data-processing, pharmacy, and laboratory staff at the coordinating center for their efforts throughout this investigation.
Source Information
From the Departments of Medicine (J.A.B., R.R.), Community and Family Medicine (J.A.B.), and Anesthesia (M.B.) and the Norris Cotton Cancer Center (E.R.G.), Dartmouth–Hitchcock Medical Center, Lebanon, N.H.; the Veterans Affairs Medical Center, White River Junction, Vt. (M.B.); the Department of Environmental and Occupational Health, School of Public Health and School of Medicine (J.S.M.), and the Departments of Pathology (D.C.S.) and Medicine (J.H.B.), School of Medicine, University of Minnesota, and the Veterans Affairs Medical Center (J.H.B.), Minneapolis; the Center for Colon Polyps and Colon Cancer, Department of Gastroenterology (R.U.S.), and the Department of Biostatistics and Epidemiology (G.J.B.), Cleveland Clinic Foundation, Cleveland; the Department of Preventive Medicine, University of Southern California School of Medicine, Los Angeles (R.W.H.); the Department of Medicine, University of North Carolina, Chapel Hill, N.C. (R.S.S.); the James A. Clifton Center for Digestive Diseases, Department of Internal Medicine, University of Iowa College of Medicine, Iowa City (R.W.S.); and the Department of Pathology, Fairview Southdale Hospital, Minneapolis (D.C.S.).
Address reprint requests to Dr. Baron at 7927 Rubin Bldg., Dartmouth–Hitchcock Medical Center, 1 Medical Center Dr., Lebanon, NH 03756.
Additional study investigators are listed in the Appendix.
Other authors were H. Frankl, M.D., Department of Internal Medicine, Southern California Permanente Group, Los Angeles; and L. Pearson, M.Phil., Department of Community and Family Medicine, Dartmouth–Hitchcock Medical Center, Lebanon, N.H.
Appendix
In addition to the authors, the Calcium Polyp Prevention Study Group included the following investigators: L.A. Mott, D.W. Nierenberg, M.M. Stevens, T. Stukel, and T.D. Tosteson (Dartmouth Medical School); D. Howell (Maine Medical Center); J. Church (Cleveland Clinic Foundation); and J. Truszkowski (University of Iowa). The study coordinators were H. Hasson and J. Bauman (Cleveland Clinic); K. Wood (Dartmouth–Hitchcock Medical Center); B. Cheyne, R. Thompson, and D. Finke (University of Iowa); J. Blomquist and S. Waldemar (University of Minnesota); C. McAuliffe and B. Schliebe (University of North Carolina); and P. Harmon (University of Southern California). The members of the data and safety monitoring committee were S. Greenhouse (George Washington University), J. Grizzle (Fred Hutchinson Cancer Research Center), R. Hunt (McMaster University), G. Luk (Wayne State University), F.M. Giardiello (Johns Hopkins University), and W.C. Willett (Harvard University).
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- Citing Articles (230)
Citing Articles
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Ailín C. Rogers, Ann M. Hanly, Danielle Collins, Alan W. Baird, Desmond C. Winter. (2012) Review Article: Loss of the Calcium-Sensing Receptor in Colonic Epithelium is a Key Event in the Pathogenesis of Colon Cancer. Clinical Colorectal Cancer 11:1, 24-30
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Muhammad N. Aslam, Ingrid Bergin, Madhav Naik, Anna Hampton, Ron Allen, Steven L. Kunkel, Howard Rush, James Varani. (2012) A Multi-Mineral Natural Product Inhibits Liver Tumor Formation in C57BL/6 Mice. Biological Trace Element Research
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Barbara C. Pence, Eric J. Belasco, Conrad P. Lyford. (2012) Prevention of Colorectal Cancer by Aspirin and/or Calcium: Efficacy, Mechanisms, and Cost Effectiveness. Current Colorectal Cancer Reports
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Mitra Rangarajan, Gerard Mullin. 2011. Nutrition and Colorectal Cancer. , 221-236.
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Hazel Squires, Paul Tappenden, Katy Cooper, Christopher Carroll, Richard Logan, Daniel Hind. (2011) Cost-Effectiveness of Aspirin, Celecoxib, and Calcium Chemoprevention for Colorectal Cancer. Clinical Therapeutics 33:9, 1289-1305
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Graham A. Colditz, Kathleen Y. Wolin. (2011) Transdisciplinary Training in Cancer Prevention: Reflections on Two Decades of Training. Journal of Cancer Education 26:3, 586-590
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Xiangwei Wu, Sherri Patterson, Ernest Hawk. (2011) Chemoprevention – History and general principles. Best Practice & Research Clinical Gastroenterology 25:4-5, 445-459
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Xuehong Zhang, Edward Giovannucci. (2011) Calcium, vitamin D and colorectal cancer chemoprevention. Best Practice & Research Clinical Gastroenterology 25:4-5, 485-494
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David Z.J. Chu, Michael A. Hussey, David S. Alberts, Frank L. Meyskens, Cecilia M. Fenoglio-Preiser, Saul E. Rivkin, Glenn M. Mills, Jeffrey K. Giguere, Charles D. Blanke, Gary E. Goodman. (2011) Colorectal Chemoprevention Pilot Study (SWOG-9041), Randomized and Placebo Controlled: The Importance of Multiple Luminal Lesions. Clinical Colorectal Cancer
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Nadir Arber, Julius Spicak, István Rácz, Miroslav Zavoral, Aurora Breazna, Paola Gerletti, Maria J Lechuga, Neal Collins, Rebecca B Rosenstein, Craig J Eagle, Bernard Levin. (2011) Five-Year Analysis of the Prevention of Colorectal Sporadic Adenomatous Polyps Trial. The American Journal of Gastroenterology 106:6, 1135-1146
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N. Jewel Samadder, Bhramar Mukherjee, Shu-Chen Huang, Jaeil Ahn, Hedy S. Rennert, Joel K. Greenson, Gad Rennert, Stephen B. Gruber. (2011) Risk of colorectal cancer in self-reported inflammatory bowel disease and modification of risk by statin and NSAID use. Cancer 117:8, 1640-1648
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Ronald M. Summers, Nicolai Baecher, Jianhua Yao, Jiamin Liu, Perry J. Pickhardt, J. Richard Choi, Suvimol Hill. (2011) Feasibility of Simultaneous Computed Tomographic Colonography and Fully Automated Bone Mineral Densitometry in a Single Examination. Journal of Computer Assisted Tomography 35:2, 212-216
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Sandeep Krishnan, Jacqueline L Wolf. (2011) Colorectal cancer screening and prevention in women. Women's Health 7:2, 213-226
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Ossama Allam, Diane Bahuaud, Sylviane Taché, Nathalie Naud, Denis E. Corpet, Fabrice H. F. Pierre. (2011) Calcium carbonate suppresses haem toxicity markers without calcium phosphate side effects on colon carcinogenesis. British Journal of Nutrition 105:03, 384-392
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Michael K. Dame, Indiradevi Veerapaneni, Narasimharao Bhagavathula, Madhav Naik, James Varani. (2011) Human colon tissue in organ culture: calcium and multi-mineral-induced mucosal differentiation. In Vitro Cellular & Developmental Biology - Animal 47:1, 32-38
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E.M.M. Quigley. 2011. Nutrition and Health | Nutritional and Health-Promoting Properties of Dairy Products: Colon Cancer Prevention. , 1016-1022.
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John Burn. (2011) Chemoprevention. Viszeralmedizin 27:4, 322-328
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Edwin A. Paz, Jenaro Garcia-Huidobro, Natalia A. Ignatenko. 2011. Polyamines in cancer. , 45-70.
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Heide S. Cross. 2011. The Vitamin D System and Colorectal Cancer Prevention. , 1711-1729.
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Ramesh Arasaradnam, K Bardhan. 2010. Diet, Epigenetics, and Colonic Fermentation and Their Role in Colorectal Cancer. , 427-439.
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Mitra Rangarajan, Gerard Mullin. 2010. Nutrition and Colorectal Cancer. , 587-601.
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Harvey G. Moore. (2010) Colorectal Cancer: What Should Patients and Families Be Told to Lower the Risk of Colorectal Cancer?. Surgical Oncology Clinics of North America 19:4, 693-710
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Osvaldo Rey, Steven H. Young, Rodrigo Jacamo, Mary P. Moyer, Enrique Rozengurt. (2010) Extracellular calcium sensing receptor stimulation in human colonic epithelial cells induces intracellular calcium oscillations and proliferation inhibition. Journal of Cellular Physiology 225:1, 73-83
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Brian Markle, Elizabeth J. May, Adhip P. N. Majumdar. (2010) Do nutraceutics play a role in the prevention and treatment of colorectal cancer?. Cancer and Metastasis Reviews 29:3, 395-404
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Petr Protiva. 2010. Nutrition and Colon Cancer Prevention. , 353-363.
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A. Datsis, A. Tsoga, V. Langouretos. (2010) The role of functional foods in the prevention of colorectal cancer. Hellenic Journal of Surgery 82:4, 224-232
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E. T. Jacobs, M. E. Martinez, P. T. Campbell, D. V. Conti, D. Duggan, J. C. Figueiredo, R. W. Haile, E. C. LeRoy, J. N. Poynter, P. A. Thompson, J. A. Baron. (2010) Genetic variation in the retinoid X receptor and calcium-sensing receptor and risk of colorectal cancer in the Colon Cancer Family Registry. Carcinogenesis 31:8, 1412-1416
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Todd M. Gibson, Leah M. Ferrucci, Joseph A. Tangrea, Arthur Schatzkin. (2010) Epidemiological and Clinical Studies of Nutrition. Seminars in Oncology 37:3, 282-296
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Robert S. Sandler. (2010) Dietary and Lifestyle Measures to Lower Colorectal Cancer Risk. Clinical Gastroenterology and Hepatology 8:4, 329-332
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Graham A. Colditz, Philip R. Taylor. (2010) Prevention Trials: Their Place in How We Understand the Value of Prevention Strategies. Annual Review of Public Health 31:1, 105-120
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Asghar Qasim, Colm OʼMorain. (2010) Primary prevention of colorectal cancer: are we closer to reality?. European Journal of Gastroenterology & Hepatology 22:1, 9-17
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Muhammad Nadeem Aslam, Narasimharao Bhagavathula, Tejaswi Paruchuri, Xin Hu, Subhas Chakrabarty, James Varani. (2009) Growth-inhibitory effects of a mineralized extract from the red marine algae, Lithothamnion calcareum, on Ca2+-sensitive and Ca2+-resistant human colon carcinoma cells. Cancer Letters 283:2, 186-192
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Patricia A Thompson, Eugene W Gerner. (2009) Current concepts in colorectal cancer prevention. Expert Review of Gastroenterology & Hepatology 3:4, 369-382
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Marjorie L. McCullough, Roberd M. Bostick, Tinisha L. Mayo. (2009) Vitamin D Gene Pathway Polymorphisms and Risk of Colorectal, Breast, and Prostate Cancer. Annual Review of Nutrition 29:1, 111-132
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Cesare Hassan, Perry J. Pickhardt, Emilio Di Giulio, David H. Kim, Angelo Zullo, Sergio Morini. (2009) Cost-Effectiveness of Early One-Year Colonoscopy Surveillance After Polypectomy. Diseases of the Colon & Rectum 52:5, 964-971
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Miriam Ude, Susanne Hengstler, Martin Schulz, Walter E. Müller, Kristina Leuner. (2009) Mineralstoffe und Spurenelemente - ein Fall für die Beratung. In der Apotheke. Pharmazie in unserer Zeit 38:3, 268-276
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Aasma Shaukat, Murtaza Parekh, Joseph Lipscomb, Uri Ladabaum. (2009) Can calcium chemoprevention of adenoma recurrence substitute or serve as an adjunct for colonoscopic surveillance?. International Journal of Technology Assessment in Health Care 25:02, 222
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Y.-L. Qiao, S. M. Dawsey, F. Kamangar, J.-H. Fan, C. C. Abnet, X.-D. Sun, L. L. Johnson, M. H. Gail, Z.-W. Dong, B. Yu, S. D. Mark, P. R. Taylor. (2009) Total and Cancer Mortality After Supplementation With Vitamins and Minerals: Follow-up of the Linxian General Population Nutrition Intervention Trial. JNCI Journal of the National Cancer Institute 101:7, 507-518
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A. R. Kristal, S. M. Lippman. (2009) Nutritional Prevention of Cancer: New Directions for an Increasingly Complex Challenge. JNCI Journal of the National Cancer Institute 101:6, 363-365
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Claudine J. Kavanaugh, Paula R. Trumbo, Kathleen C. Ellwood. (2009) Qualified Health Claims for Calcium and Colorectal, Breast, and Prostate Cancers: The U.S. Food and Drug Administration's Evidence-Based Review. Nutrition and Cancer 61:2, 157-164
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María Elena Martínez, John A. Baron, David A. Lieberman, Arthur Schatzkin, Elaine Lanza, Sidney J. Winawer, Ann G. Zauber, Ruiyun Jiang, Dennis J. Ahnen, John H. Bond, Timothy R. Church, Douglas J. Robertson, Stephanie A. Smith–Warner, Elizabeth T. Jacobs, David S. Alberts, E. Robert Greenberg. (2009) A Pooled Analysis of Advanced Colorectal Neoplasia Diagnoses After Colonoscopic Polypectomy. Gastroenterology 136:3, 832-841
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Isaac Soo, Leah Gramlich. 2009. Colorectal Cancer. .
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Douglas J. Robertson, Robert S. Sandler, Dennis J. Ahnen, E. Robert Greenberg, Leila A. Mott, Bernard F. Cole, John A. Baron. (2009) Gastrin, Helicobacter pylori, and Colorectal Adenomas. Clinical Gastroenterology and Hepatology 7:2, 163-167
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E. T. Jacobs, D. J. Ahnen, E. L. Ashbeck, J. A. Baron, E. R. Greenberg, P. Lance, D. A. Lieberman, G. McKeown-Eyssen, A. Schatzkin, P. A. Thompson, M. E. Martinez. (2009) Association Between Body Mass Index and Colorectal Neoplasia at Follow-Up Colonoscopy: A Pooling Study. American Journal of Epidemiology 169:6, 657-666
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Babette S. Zemel, Lisa B. Carey, Donna R. Paulhamus, Virginia A. Stallings, Richard F. Ittenbach. (2009) Quantifying calcium intake in school age children: Development and validation of the Calcium Counts! © food frequency questionnaire. American Journal of Human BiologyNA-NA
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D. Albanes. (2008) Vitamin Supplements and Cancer Prevention: Where Do Randomized Controlled Trials Stand?. JNCI Journal of the National Cancer Institute 101:1, 2-4
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James D. Lewis, Angela M. Capra, Ninah S. Achacoso, Assiamira Ferrara, Theodore R. Levin, Charles P. Quesenberry, Laurel A. Habel. (2008) Thiazolidinedione Therapy Is Not Associated With Increased Colonic Neoplasia Risk in Patients With Diabetes Mellitus. Gastroenterology 135:6, 1914-1923.e1
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László Herszényi, Fabio Farinati, Pál Miheller, Zsolt Tulassay. (2008) Chemoprevention of colorectal cancer: feasibility in everyday practice?. European Journal of Cancer Prevention 17:6, 502-514
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Samir Gupta. (2008) Colorectal Polyps: The Scope and Management of the Problem. The American Journal of the Medical Sciences 336:5, 407-417
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Jaana Kuoppala, Anne Lamminpää, Eero Pukkala. (2008) Statins and cancer: A systematic review and meta-analysis. European Journal of Cancer 44:15, 2122-2132
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Walter Willett. (2008) Nutrition and Cancer: The Search Continues. Nutrition and Cancer 60:5, 557-559
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Yingying Liu, Jihyeung Ju, Hang Xiao, Barbara Simi, Xingpei Hao, Bandaru S. Reddy, Mou-Tuan Huang, Harold Newmark, Chung S. Yang. (2008) Effects of Combination of Calcium and Aspirin on Azoxymethane-Induced Aberrant Crypt Foci Formation in the Colons of Mice and Rats. Nutrition and Cancer 60:5, 660-665
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María Elena Martínez, James R. Marshall, Edward Giovannucci. (2008) Diet and cancer prevention: the roles of observation and experimentation. Nature Reviews Cancer 8:9, 694-703
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Richard A. Hubner, Kenneth R. Muir, Jo-Fen Liu, Richard F.A. Logan, Matthew J. Grainge, Richard S. Houlston, . (2008) Dairy products, polymorphisms in the vitamin D receptor gene and colorectal adenoma recurrence. International Journal of Cancer 123:3, 586-593
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L. J. Dunn, J. Jankowski. (2008) Chemoprevention of gastrointestinal cancer. British Journal of Surgery 95:6, 674-676
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Maria Pufulete. (2008) Intake of dairy products and risk of colorectal neoplasia. Nutrition Research Reviews 21:01,
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Eric L. Ding, Saurabh Mehta, Wafaie W. Fawzi, Edward L. Giovannucci. (2008) Interaction of estrogen therapy with calcium and vitamin D supplementation on colorectal cancer risk: Reanalysis of Women's Health Initiative randomized trial. International Journal of Cancer 122:8, 1690-1694
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Nadir Arber, Bernard Levin. (2008) Chemoprevention of Colorectal Neoplasia: The Potential for Personalized Medicine. Gastroenterology 134:4, 1224-1237
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Tusar K. Desai, Donald Barkel. (2008) Syndromic Colon Cancer: Lynch Syndrome and Familial Adenomatous Polyposis. Gastroenterology Clinics of North America 37:1, 47-72
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Pieter Van't Veer. 2008. Dietary Intervention Studies and Cancer Prevention. , 96-104.
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Marcello Camici. (2008) Guanylin peptides and colorectal cancer (CRC). Biomedicine & Pharmacotherapy 62:2, 70-76
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Michael Asher MA Weingarten, Anca Zalmanovici Trestioreanu, John Yaphe, Michael Asher MA Weingarten. 2008. Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps. .
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Peter Lance. (2008) Chemoprevention for Colorectal Cancer: Some Progress But a Long Way to Go. Gastroenterology 134:1, 341-343
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Scott M. Lippman, J. Jack Lee. 2008. Cancer Chemoprevention. , 711-720.
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Marci Goldstein Adams, Stacie Geller, Laura Studee. 2007. Menopause and Midlife. .
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David Z. J. Chu, Glen Gibson, Donald David, Yun Yen. (2007) The Surgeon’s Role in Cancer Prevention. The Model in Colorectal Carcinoma. Annals of Surgical Oncology 14:11, 3054-3069
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J. C. Mathers. (2007) Overview of genes, diet and cancer. Genes & Nutrition 2:1, 67-70
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M.L. Carvalho, T. Magalhães, M. Becker, A. von Bohlen. (2007) Trace elements in human cancerous and healthy tissues: A comparative study by EDXRF, TXRF, synchrotron radiation and PIXE. Spectrochimica Acta Part B: Atomic Spectroscopy 62:9, 1004-1011
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Mariette Gerber, Landy Razanamahefa, Philippe Bougnoux. (2007) Trans fatty acids and cancers: AFSSA recommendations. European Journal of Lipid Science and Technology 109:9, 954-959
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Elizabeth T. Jacobs, Patricia A. Thompson, Mar??a Elena Mart??nez. (2007) Diet, Gender, and Colorectal Neoplasia. Journal of Clinical Gastroenterology 41:8, 731-746
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Judith Moreines, Richard Cotter, Leon Ellenbogen. 2007. Potential Benefits for the Use of Vitamin and Mineral Supplements. , 193-219.
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Jinfu Hu, Howard Morrison, Les Mery, Marie DesMeules, Monica Macleod. (2007) Diet and vitamin or mineral supplementation and risk of colon cancer by subsite in Canada. European Journal of Cancer Prevention 16:4, 275-291
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E. W. Gerner, F. L. Meyskens, S. Goldschmid, P. Lance, D. Pelot. (2007) Rationale for, and design of, a clinical trial targeting polyamine metabolism for colon cancer chemoprevention. Amino Acids 33:2, 189-195
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Lori Strayer, David R. Jacobs, Catherine Schairer, Arthur Schatzkin, Andrew Flood. (2007) Dietary carbohydrate, glycemic index, and glycemic load and the risk of colorectal cancer in the BCDDP cohort. Cancer Causes & Control 18:8, 853-863
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S. Ding, M. F. McEntee, J. Whelan, M. Zemel. (2007) Adiposity-Related Protection of Intestinal Tumorigenesis: Interaction With Dietary Calcium. Nutrition and Cancer 58:2, 153-161
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Eric A. Miller, Temitope O. Keku, Jessie A. Satia, Christopher F. Martin, Joseph A. Galanko, Robert S. Sandler. (2007) Calcium, dietary, and lifestyle factors in the prevention of colorectal adenomas. Cancer 109:3, 510-517
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Asad Umar, Ellen Richmond, Donna J. Griebel. (2007) Colorectal cancer prevention: Diet, drugs, or nothing. Current Colorectal Cancer Reports 3:1, 16-23
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Elizabeth Half, Frank A. Sinicrope. (2007) Current status of colorectal cancer chemoprevention. Current Colorectal Cancer Reports 3:1, 39-48
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M. E. Martinez, E. T. Jacobs. (2007) Calcium Supplementation and Prevention of Colorectal Neoplasia: Lessons From Clinical Trials. JNCI Journal of the National Cancer Institute 99:2, 99-100
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M. V. Grau, J. A. Baron, R. S. Sandler, K. Wallace, R. W. Haile, T. R. Church, G. J. Beck, R. W. Summers, E. L. Barry, B. F. Cole, D. C. Snover, R. Rothstein, J. S. Mandel. (2007) Prolonged Effect of Calcium Supplementation on Risk of Colorectal Adenomas in a Randomized Trial. JNCI Journal of the National Cancer Institute 99:2, 129-136
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J.S. Barkin. (2007) Calcium plus Vitamin D Supplementation and the Risk of Colorectal Cancer. Yearbook of Medicine 2007, 422-424
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Debasish Das, Nadir Arber, Janusz A. Jankowski. (2007) Chemoprevention of Colorectal Cancer. Digestion 76:1, 51-67
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2006. Dairy Foods and Cancer. , 141-179.
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2006. Contribution of Dairy Foods to Health throughout the Life Cycle. , 339-399.
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Sandeep Akare, Samira Jean-Louis, Wemin Chen, Daniel J. Wood, Ashley A. Powell, Jesse D. Martinez. (2006) Ursodeoxycholic acid modulates histone acetylation and induces differentiation and senescence. International Journal of Cancer 119:12, 2958-2969
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Levine, Joel S., Ahnen, Dennis J., . (2006) Adenomatous Polyps of the Colon. New England Journal of Medicine 355:24, 2551-2557
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Edward Giovannucci, Esther K. Wei. (2006) Influence of micronutrients and related genes on colorectal cancer risk. Current Colorectal Cancer Reports 2:4, 211-216
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Jacqueline L. Wolf. (2006) Uniquely Women's Issues in Colorectal Cancer Screening. The American Journal of Gastroenterology 101:s3, S625-S629
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John A. Baron, Robert S. Sandler, Robert S. Bresalier, Hui Quan, Robert Riddell, Angel Lanas, James A. Bolognese, Bettina Oxenius, Kevin Horgan, Susan Loftus, Dion G. Morton. (2006) A Randomized Trial of Rofecoxib for the Chemoprevention of Colorectal Adenomas. Gastroenterology 131:6, 1674-1682
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&NA;. (2006) The role of calcium in peri- and postmenopausal women. Menopause 13:6, 862-877
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Bertagnolli, Monica M., Eagle, Craig J., Zauber, Ann G., Redston, Mark, Solomon, Scott D., Kim, KyungMann, Tang, Jie, Rosenstein, Rebecca B., Wittes, Janet, Corle, Donald, Hess, Timothy M., Woloj, G. Mabel, Boisserie, FrédéricAnderson, William F., Viner, Jaye L., Bagheri, Donya, Burn, John, Chung, Daniel C., Dewar, Thomas, Foley, T. Raymond, Hoffman, Neville, Macrae, Finlay, Pruitt, Ronald E., Saltzman, John R., Salzberg, Bruce, Sylwestrowicz, Thomas, Gordon, Gary B., Hawk, Ernest T., . (2006) Celecoxib for the Prevention of Sporadic Colorectal Adenomas. New England Journal of Medicine 355:9, 873-884
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Susan Roberts, Mary Krystofiak Russell. 2006. Promoting Small and Large Bowel Health. .
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A. A. Davies, G. Davey Smith, R. Harbord, G. E. Bekkering, J. A. C. Sterne, R. Beynon, S. Thomas. (2006) Nutritional Interventions and Outcome in Patients With Cancer or Preinvasive Lesions: Systematic Review. JNCI Journal of the National Cancer Institute 98:14, 961-973
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Andrew Szilagyi, Usha Nathwani, Christina Vinokuroff, José A. Correa, Ian Shrier. (2006) The Effect of Lactose Maldigestion on the Relationship Between Dairy Food Intake and Colorectal Cancer: A Systematic Review. Nutrition and Cancer 55:2, 141-150
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S. Harakeh, M. Diab-Assaf, A. Niedzwiecki, J. Khalife, K. Abu-El-Ardat, M. Rath. (2006) Apoptosis induction by Epican Forte in HTLV-1 positive and negative malignant T-cells. Leukemia Research 30:7, 869-881
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Gérard Lledo, Pascal Artru. (2006) Calcium et cancer colorectal chez la femme ménopausée: échec et mat!. Acta Endoscopica 36:3, 369-370
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Lionel S. Lim, Darryl S. Chutka. (2006) Preventive medicine beyond 65. Geriatrics and Gerontology International 6:2, 73-81
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(2006) Calcium plus Vitamin D and the Risk of Colorectal Cancer. New England Journal of Medicine 354:21, 2287-2288
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Silvano Gallus, Francesca Bravi, Renato Talamini, Eva Negri, Maurizio Montella, Valerio Ramazzotti, Silvia Franceschi, Attilio Giacosa, Carlo La Vecchia. (2006) Milk, Dairy Products and Cancer Risk (Italy). Cancer Causes & Control 17:4, 429-437
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Irit Chermesh, Raanan Shamir. (2006) Colorectal cancer and nutrition. Current Colorectal Cancer Reports 2:1, 20-24
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Elizabeth L. R. Barry, John A. Baron, Maria V. Grau, Kristin Wallace, Robert W. Haile. (2006) K-ras mutations in incident sporadic colorectal adenomas. Cancer 106:5, 1036-1040
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Maria V. Grau, Judy R. Rees, John A. Baron. (2006) Chemoprevention in Gastrointestinal Cancers: Current Status. Basic <html_ent glyph="@amp;" ascii="&"/> Clinical Pharmacology <html_ent glyph="@amp;" ascii="&"/> Toxicology 98:3, 281-287
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R. P. Heaney. (2006) Nutrition and Chronic Disease. Mayo Clinic Proceedings 81:3, 297-299
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Forman, Michele R., Levin, Bernard, . (2006) Calcium plus Vitamin D3 Supplementation and Colorectal Cancer in Women. New England Journal of Medicine 354:7, 752-754
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Wactawski-Wende, Jean, Kotchen, Jane Morley, Anderson, Garnet L., Assaf, Annlouise R., Brunner, Robert L., O'Sullivan, Mary Jo, Margolis, Karen L., Ockene, Judith K., Phillips, Lawrence, Pottern, Linda, Prentice, Ross L., Robbins, John, Rohan, Thomas E., Sarto, Gloria E., Sharma, Santosh, Stefanick, Marcia L., Van Horn, Linda, Wallace, Robert B., Whitlock, Evelyn, Bassford, Tamsen, Beresford, Shirley A.A., Black, Henry R., Bonds, Denise E., Brzyski, Robert G., Caan, Bette, Chlebowski, Rowan T., Cochrane, Barbara, Garland, Cedric, Gass, Margery, Hays, Jennifer, Heiss, Gerardo, Hendrix, Susan L., Howard, Barbara V., Hsia, Judith, Hubbell, F. Allan, Jackson, Rebecca D., Johnson, Karen C., Judd, Howard, Kooperberg, Charles L., Kuller, Lewis H., LaCroix, Andrea Z., Lane, Dorothy S., Langer, Robert D., Lasser, Norman L., Lewis, Cora E., Limacher, Marian C., Manson, JoAnn E., . (2006) Calcium plus Vitamin D Supplementation and the Risk of Colorectal Cancer. New England Journal of Medicine 354:7, 684-696
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Marjorie L McCullough, Walter C Willett. (2006) Evaluating adherence to recommended diets in adults: the Alternate Healthy Eating Index. Public Health Nutrition 9:1a,
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Alastair J.M. Watson. (2006) An overview of apoptosis and the prevention of colorectal cancer. Critical Reviews in Oncology/Hematology 57:2, 107-121
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Ramu Raju, Marcia Cruz-Correa. (2006) Chemoprevention of Colorectal Cancer. Diseases of the Colon & Rectum 49:1, 113-125
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Piet A. van den Brandt, R. Alexandra Goldbohm. (2006) Nutrition in the prevention of gastrointestinal cancer. Best Practice & Research Clinical Gastroenterology 20:3, 589-603
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N Bhagavathula, E A Kelley, M Reddy, K C Nerusu, C Leonard, K Fay, S Chakrabarty, J Varani. (2005) Upregulation of calcium-sensing receptor and mitogen-activated protein kinase signalling in the regulation of growth and differentiation in colon carcinoma. British Journal of Cancer 93:12, 1364-1371
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Douglas J. Robertson, Robert S. Sandler, Robert Haile, Tor D. Tosteson, E. Robert Greenberg, Maria Grau, John A. Baron. (2005) Fat, Fiber, Meat and the Risk of Colorectal Adenomas. The American Journal of Gastroenterology 100:12, 2789-2795
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Emmanuelle Kesse, Marie-Christine Boutron-Ruault, Teresa Norat, Elio Riboli, Françoise Clavel-Chapelon, . (2005) Dietary calcium, phosphorus, vitamin D, dairy products and the risk of colorectal adenoma and cancer among French women of the E3N-EPIC prospective study. International Journal of Cancer 117:1, 137-144
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W R Bruce, M Cirocco, A Giacca, Y-I Kim, N Marcon, S Minkin. (2005) A pilot randomised controlled trial to reduce colorectal cancer risk markers associated with B-vitamin deficiency, insulin resistance and colonic inflammation. British Journal of Cancer 93:6, 639-646
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Ismail Jatoi, William F. Anderson. (2005) Cancer Screening. Current Problems in Surgery 42:9, 620-682
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Charles J. Kahi, Douglas K. Rex. (2005) Screening and Surveillance of Colorectal Cancer. Gastrointestinal Endoscopy Clinics of North America 15:3, 533-547
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D. J. ROBERTSON, C. A. BURKE, B. J. SCHWENDER, M. J. WARGOVICH, E. R. GREENBERG, R. S. SANDLER, D. J. AHNEN, R. ROTHSTEIN, L. A. MOTT, J. A. BARON. (2005) Histamine receptor antagonists and incident colorectal adenomas. Alimentary Pharmacology and Therapeutics 22:2, 123-128
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Douglas J. Robertson, E. Robert Greenberg, Michael Beach, Robert S. Sandler, Dennis Ahnen, Robert W. Haile, Carol A. Burke, Dale C. Snover, Robert S. Bresalier, Gail McKeown-Eyssen, Jack S. Mandel, John H. Bond, Rosalind U. van Stolk, Robert W. Summers, Richard Rothstein, Timothy R. Church, Bernard F. Cole, Tim Byers, Leila Mott, John A. Baron. (2005) Colorectal Cancer in Patients Under Close Colonoscopic Surveillance. Gastroenterology 129:1, 34-41
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D. S. Alberts, M. E. Martinez, L. M. Hess, J. G. Einspahr, S. B. Green, A. K. Bhattacharyya, J. Guillen, M. Krutzsch, A. K. Batta, G. Salen, L. Fales, K. Koonce, D. Parish, M. Clouser, D. Roe, P. Lance, . (2005) Phase III Trial of Ursodeoxycholic Acid To Prevent Colorectal Adenoma Recurrence. JNCI Journal of the National Cancer Institute 97:11, 846-853
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MA Weingarten, A Zalmanovici, J Yaphe, Michael Asher Weingarten. 2005. Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps. .
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William M. Grady, Ken Russell. (2005) Ionizing radiation and rectal cancer: Victims of our own success. Gastroenterology 128:4, 1114-1117
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Martha Slattery. (2005) What Is the Role of Diet in the Development of Cancer in American Indian and Alaska Native Populations?. Journal of Cancer Education 20, 92-96
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Sharlene Gill, Frank A. Sinicrope. (2005) Colorectal cancer prevention: Is an ounce of prevention worth a pound of cure?. Seminars in Oncology 32:1, 24-34
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