Almonds

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.

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