Herbicides linked to farmer depression
By John Upton on Jul 29, 2013
ShutterstockHerbicide use is linked to depression among farmers and farmworkers.
Killing weeds with toxic chemicals might be making farmers clinically sad.
A study of more than 700 French farmers and farmworkers found that those who used herbicides were more likely to be treated for depression than were those who avoided the stuff.
[W]hen the researchers took into account factors linked with depression, such as age and cigarette smoking, they determined that those farmers exposed to weedkillers were nearly two and a half times as likely to have had depression.
Furthermore, farmers who had greater exposure — either more hours or longer years using herbicides — also had a greater chance of having depression than farmers who had used weedkillers less.
The researchers can't say whether chemicals in the weedkillers actually caused the depression. More work would be needed to make that link.
But the finding suggests that we should be paying more attention to the potential hazards of herbicides. Chemical weedkillers are being used in growing volumes in America, in many cases doused over crops that were genetically engineered by Monsanto and other agricultural giants to withstand their poisonous effects. Tom Laskawy told you in May that the EPA is increasing the amount of weedkiller allowed in our food — despite a growing body of evidence describing its dangers.
From the new study, which was published in the American Journal of Epidemiology:
The possibility that environmental contaminants could affect psychological health has been generally underappreciated. Herbicide exposure in particular has received little research attention. If true, our findings have important public health implications for agricultural workers given the tremendous public health burden of depression and the fact that herbicides are widely used in agriculture and landscape management. In the United States, herbicides make up about 65% of all agricultural pesticide use.
Marc Weisskopf, the study's lead author and an associate professor at the Harvard School of Public Health, told Reuters that the new research "raises concerns that need to be looked into more fully" and is a reminder that "we should not be ignoring herbicides" when considering pesticide hazards.
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