For years, it has seemed obvious that taking estrogen is good for a woman's heart. Most women don't suffer heart attacks until they've gone through menopause and their bodies no longer produce much of the hormone. But researchers discovered a funny thing when they tried to prove the obvious. Taking estrogen doesn't always protect women against heart disease--and may sometimes make matters worse.
Scientists presented their latest misgivings about estrogen's coronary benefits at last week's meeting of the American College of Cardiology in Anaheim, Calif. In a preliminary analysis of a study of 309 women with heart disease, Dr. David Herrington...