Elderberry
An old folk remedy, extract from these dark berries appears to block flu viruses in test tube studies. But scientists caution that further study is needed. The fruit itself is rich in antioxidants and may also have the ability to fight inflammation.
Acai Berry
Hawked as a "super food" along with produce like blueberries, the little acai berry's dark color signals that it is high in antioxidants called anthocyanins. While the acai is not scientifically linked to specific disease- or illness-fighting ability, antioxidants may help your body fight aging and disease. Acai berries can be found most often in juice or smoothie form, or dried and mixed with granola.
Grapefruit
Grapefruits have a good amount of vitamin C. But science has yet to prove that you can easily get enough vitamin C through foods alone, without supplementation, to help treat cold and flu. However, grapefruit is packed with flavonoids -- natural chemical compounds that have been found to increase immune system activation. Dislike grapefruits? Try oranges or tangerines.
Spinach
Known as a "super food," spinach is nutrient-rich. It has folate, which helps your body produce new cells and repair DNA. And it boasts fiber, antioxidants, such as vitamin C, and more. Eat spinach raw or lightly cooked to get the most benefit.
Tea
Green or black? Both are loaded with disease-fighting polyphenols and flavonoids. These antioxidants seek out cell-damaging free radicals and destroy them. Caffeinated and decaf work equally well.
Sweet Potato
Like carrots, sweet potatoes have the antioxidant beta-carotene, which mops up damaging free radicals. Sweet potatoes also boast vitamin A, which is linked to slowing the aging process and may reduce the risk of some cancers.
Low-Fat Yogurt
This such a greatttt things to yogurt fans.A daily cup may reduce your chances of getting a cold. Look for labels listing "live and active cultures." Some researchers believe they may stimulate your immune system to fight disease. Also look for vitamin D. Recent studies have found a link between low vitamin D levels and an increased risk of cold and flu.
Almonds
A handful of almonds may shore up your immune system from the effects of stress. 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.
Watermelon
Hydrating and refreshing, ripe watermelon also has plenty of a powerful antioxidant, glutathione. Known to help strengthen the immune system so it can fight infection, glutathione is found in the red pulpy flesh near the rind.
Grapefruits have a good amount of vitamin C. But science has yet to prove that you can easily get enough vitamin C through foods alone, without supplementation, to help treat cold and flu. However, grapefruit is packed with flavonoids -- natural chemical compounds that have been found to increase immune system activation. Dislike grapefruits? Try oranges or tangerines.
Hydrating and refreshing, ripe watermelon also has plenty of a powerful antioxidant, glutathione. Known to help strengthen the immune system so it can fight infection, glutathione is found in the red pulpy flesh near the rind.
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