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National News

A Little-Known Heart Danger

Bob Harper, the celebrity fitness trainer from the TV show “The Biggest Loser,” who suffered a heart attack in 2017, at his home in New York, Jan. 5, 2018. He eventually found out the cause was a particle in the blood called lipoprotein(a), which few doctors test for. “Being healthy is not about what you can do in the gym,” Harper said. “It’s not about what you can do on the outside. It’s what’s going on in the inside. (Hilary Swift/The New York Times)