Word: dioxin
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Dates: during 1971-1971
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...what of the direct effect of this chemical dosage on humans? The herbicides used include two chemicals, dioxin and 2,4,5-T, known to cause birth defects, which suggests the possibility that there has been a more permanent, grotesque effect brought by the herbicides...
...Dioxin occurs as an impurity in Orange, the principal herbicide used in Vietnam. Its potential importance lies in the fact that it is exceedingly toxic, may be quite stable in the environment, and, being fat soluble, may be concentrated as it moves up the food chain into the human diet. Very rough model calculations suggest that it is not impossible that significant amounts of dioxin are entering the Vietnamese diet...
...studied hospital records in South Vietnam to try to see if dioxin or another chemical herbicide, 2,4,5-T, were implicated in birth defects. Because of the scarcity of data on birth defects and the haphazard way most of them are collected, the HAC found it very difficult to find reliable information. Precise information on quantities of herbicide sprayed, the type of herbicide used, and the location of each spraying mission is classified confidential by the military and is inaccessible to the HAC researchers. The Commission does have enough information to evaluate the magnitude of the problem, however...
Together with Robert Baughman of the Harvard Chemistry Department, Meselson is trying to develop the needed technology for detecting dioxin in food, human tissues, and other materials the HAC collected in Vietnam...
...first area studied by the Commission was that of food chains. They concluded that dioxin, one of the impurities in the herbicide, is "exceedingly toxic, may be quite stable in the environment, and, being fat soluble, may be concentrated as it moves up the food chain into the human diet. Very rough calculations suggest that it is not impossible that significant amounts of dioxin are entering the Vietnamese diet...