Bulletin Today | Personal HealthModerate alcohol consumption — a glass of wine or a cocktail a day — has been shown to help prevent heart disease, but a new study suggests that it might even be good for men who have had a heart attack. Harvard researchers who tracked 1,818 male heart attack survivors for up to 20 years found that those who drank moderately were 42 percent less likely to die from heart disease and 34 percent less likely to die from any …