If you insist on using chemical laden insect repellents containing DEET, you may be getting more than you bargained for -- including damage to your central nervous system. In fact, scientists writing in the open access journal BMC Biology don't just say that more studies should be done to confirm DEET's potential neurotoxicity to humans. The researchers are calling for more investigations of the chemical to be conducted on an urgent basis. The reason? They suspect that the potential brain cell damaging effects of DEET could be particularly harmful if used in combination with other neurotoxic insecticides. And that's exactly the way DEET is normally used in products applied to both adults and kids in order to prevent mosquito bites.
French scientists Vincent Corbel from the Institut de Recherche pour le Developement in Montpellier and Bruno Lapied from the University of Angers headed a team of researchers who studied the mode of action and toxicity of DEET, also known by the chemical name N-Diethyl-3-methylbenzamide. "We've found that DEET is not simply a behavior-modifying chemical but also inhibits the activity of a key central nervous system enzyme, acetycholinesterase, in both insects and mammals," Corbel said in a statement to the media.
DEET has been in use since its discover in l953 and is now the most common ingredient found in insect repellent preparations. It is primarily hyped as a way to keep mosquitoes at bay and doctors and insect repellant manufacturers promote DEET's use through scare tactics, suggesting you are likely to get West Nile fever from mosquito bites unless you use the chemical.
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