Image Dr. Fillingham. “There are a lot of nuances and different viewpoints that go into saying a B.M.I. cutoff is a good thing or a bad thing,” he said.Credit...Hannah Beier for The New York ...

B.M.I. may be less reliable when used in kids ... This may be why the academy has added new tools to doctors’ arsenal, including bariatric surgery and weight-loss drugs. One drug, Wegovy ...