Video: BMI not the best measure of obesity: study
Height-to-waist ratio is now believed to be a better measure of obesity than body mass index (BMI). CBS News medical contributor Dr. Holly Phillips reports on the research behind the change. (Source: Health News: CBSNews.com)

Simpler colon cancer screening alternative cuts death risk, study finds
Sigmoidoscopy is not a popular choice in the U.S. but it's test used most often in England (Source: Health News: CBSNews.com)