Alliums, the botanical family that includes leeks, onions, and garlic, share many remarkable traits. They can help lower blood pressure and cholesterol levels. Research suggests they inhibit the growth of prostate, stomach, and colon cancer cells. They also have antibiotic properties—so they can ward off germs as well as vampires.
The same key nutrients that give high-priced health foods their disease-fighting powers can be found in more common fruits and veggies. Here's where to look.