Podcast 187: Colorectal adenomas not prevented by calcium and/or vitamin D

We interview John Baron about his recent New England Journal of Medicine study testing the ability of calcium or vitamin D (or both) to prevent recurrences of colorectal adenomas in a population who had lesions found during colonoscopy. On follow-up after three to five years, the effects of daily calcium and/or vitamin D supplements were the same as for placebo — that is, there was no significant reduction in risk. The results were surprising, since the same author found a protective effect for calcium in a 1999 publication in NEJM. (In that study, vitamin D wasn’t tested.) LINKS: New England Journal of Medicine study (free abstract) Physician’s First Watch coverage (free) The post Podcast 187: Colorectal adenomas not prevented by calcium and/or vitamin D first appeared on Clinical Conversations.