In recent decades, scientists have realized that heart attack symptoms can be quite different for women than for men. The journal Circulation published the findings of a multicenter study of 515 women who’d experienced a heart attack. The most frequently reported symptoms didn’t include chest pain. Instead, women reported unusual fatigue, sleep disturbances, and anxiety. Nearly 80 percent reported experiencing at least one symptom for more than a month before their heart attack. In a survey published in the journal Circulation, only 65 percent of women said they’d call 911 if they thought they might be having a heart attack.