El paraquat es un herbicida común que causa la enfermedad de Parkinson.

Scientific researchers have linked Paraquat to Parkinson's Disease. Over 30 countries have banned Paraquat.  Studies have found an association between two commonly used agrochemicals (paraquat and maneb) and Parkinson's disease. Now a professor has determined that low-level exposure to the pesticides disrupts cells in a way that mimics the effects of mutations known to cause Parkinson's disease.