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Duke University study on the effects of DEET
Every year, approximately one-third of the U.S population uses insect repellants containing DEET to ward off mosquitoes and other pests. At present, DEET is used in more than 230 products with concentrations up to 100 percent.
However, DEET should be used with caution due to its possible damaging effects on brain cells. Studies have shown that DEET causes brain cell death and behavioural changes in rats after frequent and prolonged use. This exposure causes neurons to die in regions of the br...