Coverage from Boston.com, featuring HSPH’s Walter Willett
The Expert: Dr. Walter Willett
Fredrick John Stare Professor of Epidemiology and Nutrition, Departments of Nutrition and Epidemiology, and Chair, Department of Nutrition, Harvard School of Public Health
A recent JAMA study got major media attention when it claimed that grade 1 obesity (BMI 30-<35) was not associated with any greater mortality, than being normal weight (BMI 18.5-<25). The authors also concluded that people who are up to 30 pounds overweight appear to have a lower risk of death than those who are within the normal BMI range for healthy weight. Many news articles or segments claimed that the study should come as a relief to those constantly struggling to lose weight because their extra pounds could actually be helping their health! Other sources have suggested that we need to re-organize our BMI ranges to reflect the study’s results, moving grade 1 obesity into a normal or healthy range. But our expert, HSPH’s Nutrition Department Chair, Dr. Walter Willett, explained that the study’s results are flawed and extremely misleading. In the following questions and responses, partially published by USAToday, Willett details the study’s weaknesses and provides advice to those who are overweight and possibly confused by these new findings. Read more about maintaining a healthy weight, what the BMI means, and explore ways to prevent obesity.
The Expert: Dr. Lu Qi
Assistant Professor in the Department of Nutrition, Harvard School of Public Health
We asked Dr. Lu Qi of the Harvard School of Public Health to explain the importance of considering genetic factors when approaching your diet. His recently published study suggests a link between sugary drinks and a genetic risk of obesity, and highlights the importance of gene-environment interaction in determining health outcomes. In the study of 33,097 individuals, those with a genetic predisposition to obesity were likely to be more adversely impacted by drinking sugary beverages; and the detrimental effects of sugary drink on body weight appeared to be amplified by high genetic risk. Read more about the study here.
Coverage from US News, featuring HSPH’s Dariush Mozaffarian
Coverage from Harvard Health Publications, featuring HSPH’s Edward Giovannucci
Coverage from Huffington Post, featuring HSPH’s Lilian Cheung
Coverage from US News, featuring HSPH’s Lu Qi
Coverage from TedMed, featuring HSPH’s David Ludwig
Coverage from NPR, featuring HSPH’s Marrhew Gillman