A Pennsylvania State University study of 72 seemingly healthy women, aged 60 or more, focused on how iron deficiency impaired their measures of immunity.
Tea is already thought to protect the body against heart disease and cancers, but research shows black and green tea inhibit the activity of enzymes associated with the development of Alzheimer's.
Investigators in the U.S. report, "Functional ingredients of grape seeds include several flavonoids with a phenolic nature such as monomeric flavanols (catechin and epicatechin), dimeric, trimeric and polymeric procyanidins, and phenolic acids (gallic acid and ellagic acid). These flavonoids have been reported to exhibit antioxidant activity in vivo and in vitro in a number of studies."