It is possible that PB may act synergistically with other exposures to lead to adverse or toxic effects that may relate to illnesses in PGW veterans. Some have referred to a putative “toxic cocktail” (Shays, 1997), or to “cumulative health consequences of exposure to multiple risk factors” (Metcalf, 1997) including PB, vaccines, chemical weapons, pesticides, depleted uranium, infection, and smo...
