Acai Berry

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.

for more info kindly see-
http://www.webmd.com/cold-and-flu/slideshow-immune-foods?ecd=wnl_wmh_050911