Measuring BMI (IMAGE) WashU Medicine Caption Bettina Mittendorfer, Ph.D., (left) measures Mary Akin's height to calculate her body mass index, which is a ratio of height to body weight. Akin has been part of a study aimed at helping women lose weight and determining the effects of a high-protein diet on weight loss. The research team found that those who ate a high-protein diet to lose weight didn't get the metabolic benefits seen in women who lost weight on a lower-protein diet. Credit Robert Boston Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.