Transfer Factor (dietary Supplement) History and Claims
Colostrum is a form of milk produced by the mammary glands of mammals (including humans) in late pregnancy. It contains multiple immune modulating molecules including high antibody levels. Based on studies that are predominantly nearly three decades old noting an overlap in the observed in vitro effects between a molecule contained in colostrum called colostrinin and the dialyzable leukocyte extract mentioned above, a hypothesis formed that the two were the same. There has been no recent research investigations comparing the two entities and thus there is no verifiable evidence that either colostrum or egg whites contain the cellular product that shares the name transfer factor.
Colostrum/egg derived transfer factors have been promoted as a treatment for a large number of diseases and health concerns but have not been proven effective in the treatment of any of these conditions. The United States Food and Drug Administration regulates transfer factors as a dietary supplement and has issued a warning notice to a website selling transfer factors that they have not been proven to be effective or safe in the treatment of any condition, nor have there been any biological licenses or New Drug Applications produced for the substance.
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