Pesticide exposure appears more strongly linked to ALS risk in men than in women in this analysis. The risk was slightly higher with exposure to herbicides (a type of pesticide), which was associated with a 71 percent heightened risk of developing ALS. But the analysis couldn’t fully disentangle these risk factors from pesticide exposure. This kind of exposure is likely quite different to typical occupational pesticide exposure today. Overall, the study supports the case that being exposed to pesticide at work increases your risk of developing ALS.