“What proportion of heart attacks occur in people younger than age sixty-five?” I guessed high, one in four, but I was way low. Fully half of all major adverse cardiovascular events11 in men (and a third of those in women), such as heart attack, stroke, or any procedure involving a stent or a graft, occur before the age of sixty-five. In men, one-quarter of all events occur before age fifty-four.
