It also has a “J-shaped” relationship with mortality very low and very high B.M.I.s are associated with greater risk of dying sooner, whereas the “normal” to “overweight” range is associated with lower mortality risk.Īs Dr. On average, people with a higher body mass index have more body fat, so it can be useful for tracking rates of obesity, which have nearly tripled globally over the last several decades. is generally associated with greater risk of heart disease, Type 2 diabetes and some types of cancer, she said. Research has shown that across large groups of people, higher B.M.I. JoAnn Manson, a professor of medicine at Harvard Medical School.
“It is a very useful tool in epidemiologic research,” said Dr. And, in fact, some said they would indeed call it a scam. was a very useful measure of a person’s health. But after talking with an epidemiologist, two obesity medicine physicians, a health psychologist and a sociologist, none claimed that B.M.I.
Many feel judged by these categories, given that only about a quarter of adults in the United States can call themselves “normal” on the B.M.I. The result, which slots you into one of four main categories, is meant to describe your body in a single word or two: underweight (B.M.I. Its formula is simple: Take your weight (in kilograms), and divide by the square of your height (in meters). We encounter it not just at doctor’s offices, but with online calculators and smart scales, at gyms and even when determining eligibility for the Covid vaccine. There are few single measures in health care that seem to carry as much weight as body mass index, or B.M.I.
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