A new definition of obesity could dramatically increase the number of Americans considered obese. Under the new definition, the prevalence of obesity rose from around 40% to nearly 70% among more than 300,000 people participating in a long-term health study, researchers reported Oct. 15 in JAMA Network Open. The new definition takes into account additional measures of excess body fat rather than just relying on body mass index (BMI). BMI is an estimate of body fat based on height and weight. “We already thought we had an obesity epidemic, but this is astounding,” said co-lead researcher Dr. Lindsay Fourman, an endocrinologist at Mass General Brigham in Boston. “With potentially 70% of the adult population now considered to have excess fat, we need to better understand what treatment approaches to prioritize,” she said in a news release. Evidence shows that the new definition is on the money, when it comes to health problems resulting from obesity, researchers said. The people newly classified as obese had a higher risk of diabetes, heart disease and premature death than people without obesity. “Identifying excess body fat is very important, as we’re finding that even people with a normal BMI but with abdominal fat accumulation are at increased health risk,” Fourman said. “Body composition matters – it’s not just pounds on a scale.” The new definition could increase the number… read on > read on >







