Interesting fact: a study conducted by researchers at Tufts University in Medford, MA showed that taking vitamin E improves immune function in the elderly.*
*Source: Meydani, SN, Meydani M, Blumberg JB, et.al. Vitamin E supplementation and in vivo immune response in healthy elderly subjects: a randomized control trial. J Am Med Assoc. 1997; 277:1380-1386.