A study published in the Jan. 17 issue of the Journal of the National Cancer Institute suggests that people can protect themselves from a type of polyp that leads to cancer -- recurrent colorectal adenomas -- for up to five years after discontinuing a daily calcium supplement regiment maintained for four years.
A previous study had shown a link between daily calcium supplementation and reduced colorectal adenoma risk, and the recent follow-up study showed that the supplements continue to offer protection after patients discontinue use.
Data from 587 patients who previously had at least one colonoscopy was analyzed for seven years after the conclusion of the previous study. At the five-year-mark, the former calcium users showed a 31.5 percent rate of adenoma formation, while the group who never used calcium supplements showed 43.2 percent growth, but no apparent effect on either group was noted after that time. The study also showed that the prior use of calcium supplements reduced advanced adenoma risk, but not in a way that was statistically significant.
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Daily calcium supplements can help prevent colon polyps, study suggests
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