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.
Button Mushrooms
Don't dismiss the lowly mushroom as nutrient poor: It has the mineral
selenium and antioxidants. 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. Animal studies have also shown mushrooms to have
antiviral, antibacterial, and anti-tumor effects.
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.
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.
Grapefruit
Grapefruit is packed with flavonoids -- natural chemical compounds
that have been found to increase immune system activation. They have a
good amount of vitamin C too. Dislike grapefruits? Try oranges or
tangerines.
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.
