Too darn hot for your heart?
During a heat wave, death rates rise, and most of the added fatalities are related to heart problems. Hazy, hot, and humid weather puts extra stress on the heart, which has to work harder than usual to cool off the body. People who take certain blood pressure drugs may be prone to blood pressure drops in hot weather, increasing their risk of feeling dizzy or lightheaded. Higher temperatures also make air pollution worse, which slightly raises the risk of a heart attack over the short term.
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