Admit it—even if you eat fruits and vegetables, exercise and get your checkups on time, you’ve got one, two, maybe three habits that aren’t so healthy. (Even we health writers and editors have them!) But what really does major damage? A diet soda every day? Getting only five hours of sleep a night? “If you’re generally a healthy person, some of these may not be such a big deal. But there are a few zingers that are never OK under any circumstances,” says Donna Casey, MD, an internist at Presbyterian Hospital of Dallas. We bet you’re guilty of at least one of these 10.
There's evidence that eating a fatty meal will almost immediately affect the functioning of your blood vessels, making it harder for them to dilate for hours after you've eaten. But having fast food once a week is probably OK if you have