https://www.health.harvard.edu/authors/lawrence-s-friedman-md/feed/atom<![CDATA[Harvard Health Posts by Lawrence S. Friedman, MD Feed]]>https://www.health.harvard.edu/img/logos/hhp-logo-mark-lg.jpg173144Harvard Health Blog: You'll find posts from Harvard Medical School physicians and our editors on a variety of health news and issues.2022-10-18T10:30:00-04:00<![CDATA[How well do colonoscopies prevent colorectal cancer? What you need to know]]>https://www.health.harvard.edu/blog/how-well-do-colonoscopies-prevent-colorectal-cancer-what-you-need-to-know-2022101828342022-10-18T10:30:00-04:00