The seasons are changing which means flu season is around the corner. Strengthen your immune system naturally with simple and natural foods.

Elderberries

A few small studies done in people show it may help you recover more quickly from flu. The fruit itself is rich in antioxidants and may also have the ability to fight inflammation.

Button Mushrooms

Low levels of selenium have been linked to increased risk of developing more severe flu. And the B vitamins riboflavin and niacin, found in these mushrooms, play a role in a healthy immune system.

Acai

The acai berry’s dark color signals that it is high in antioxidants called anthocyanins. These antioxidants may help your body fight aging and disease.

Oysters

Thanks to the mineral zinc that’s found in oysters. They appear to have some antiviral effect.

Watermelon

Ripe watermelon has plenty of a powerful antioxidant glutathione. Known to help strengthen the immune system so it can fight infection.

Cabbage

Cabbage is another source of immune-strengthening glutathione.

Almonds

A recommended 1/4 cup serving carries nearly 50% of the daily recommended amount of vitamin E, which helps boost the immune system. And they have riboflavin and niacin, B vitamins that may help you bounce back from the effects of stress.

Grapefruit

Grapefruits have a good amount of vitamin C also grapefruit is packed with flavonoids natural chemical compounds that have been found to increase immune system activation.

Sweet Potato

Sweet potatoes have the antioxidant beta-carotene, which cleans up damaging free radicals. Sweet potatoes also have a lot vitamin A, which is linked to slowing down the age process and could the risk of certain cancers.