Although cold and flu season hits hard during the winter, your immune system is working hard all year round. Eat these fresh foods to help boost your immunity.

Snack on almonds, cashews or walnuts: the nuts are packed with vitamin E, an antioxidant that helps kick pesky free-radicals out of your body and creates antibodies that fight the bacteria that make you sick.

The famous vitamin C helps fight infection and is a good antioxidant to eat alongside vitamin E. Grapefruits, clementines, lemons, limes and tangerines are all part of this family. You can find a variety of citrus fruit in season throughout the year. Citrus not your thing? Try bell peppers — they have more vitamin C than an orange!

Shrimp is extremely low in fat and contains the antioxidant selenium. This mineral needed in small amounts and works to support a healthy immune system.