Garlic
Garlic has been found to help prevent colds when consumed regularly, owing to its immune-boosting compound allicin, says Donna Cardillo, RN. Eat more garlic when you have a cold or try it raw with an orange-juice chaser.
Blueberries
Researchers from Cornell University found that blueberries contained more antioxidants than any other fresh fruit tested, which should help beat your sniffles. Eat them alone when you have a cold, or sprinkle on a bowl of cereal or yogurt to add some vitamin D.