Yogurt has been recognized for ages for its ability to prevent and cure diarrhea. Yogurt kills the bacteria that cause intestinal disorders, and more recent research shows that the antibacterial activity of yogurt can work throughout your body to boost your entire immune system. It even kills the bacteria that causes body odor.
This dairy product significantly reduces your susceptibility to pollen allergies, hay fever and colds if you start eating it three months before the pollen or cold season begin -- you could eat it all year for maximum benefits. It has antiviral and anticancer activity, too. It stimulates your body's infection fighting cells, called antibodies, to attack viruses and tumors. Acidophilus-containing yogurts prevent yeast infections and can reduce the incidence of colon cancer.
We've saved the best for last: garlic.