By now, everyone knows that garlic is good for you -- really, really good for you. These spicy, aromatic bulbs are said to be anti-cancer, anti-viral, anti-bacterial, anti-oxidant (and of course, anti-vampire). Garlic may also lower blood sugar, cholesterol, and blood pressure, reduce arterial plaque, thin your blood, and prevent colds and other viruses. World War I soldiers were given garlic to prevent gangrene, and today, agricultural scientists are using garlic as an environmentally sound way to get rid of slugs and snails. Some people swear that eating garlic keeps mosquitoes away.