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Don’t drink (too much) alcohol

Having too many drinks can raise triglycerides and blood pressure and even lead to heart failure. However, moderate drinking may actually ward off heart disease. Moderate means no more than one drink a day for women and two for men.

If you don’t drink, this isn't a reason to start, according to Dr. Simmons. "But if you have always enjoyed a glass of wine and want reassurance, it's perfectly fine," he says.

Next: Cut the caffeine