A study suggests that heavy tea drinking could redue the risk of dying after a heart attack. Those who drank the most tea before the heart attack were 44 percent less likely than non-drinking to die up to four years later. The greatest tea drinkers had about 19 cups a week. Moderate drinkers, who had fewer than 14 cups, had a 28 percent victims looked at deaths from all causes, not just heart disease. Several studies have found regular tea drinkers have a lower risk of heart attack, though it remains unclear why. One expert who participants diets might account for the results. Research in this study was done by a Harvard Medical School scientists. The report is in the journal Circulation.