When the Olympics begin July 26, followed by the Paralympic Games a month later, attention will be paid to medal counts, doping violations, and competitions. Yet there are significant public health issues that merit serious attention, too. Fortunately, measures still can be taken to mitigate some of them.

BUENOS AIRES — Lionel Messi won't be in Argentina’s squad at the Olympics starting later this month in Paris. Coach Javier Mascherano included four World Cup winners in the squad he announced Tuesday, including striker Julián Álvarez and defender Nicolás Otamendi.

Find out when to watch the 2024 Summer Olympic Games and see Simone Biles, LeBron James and Steph Curry compete.