The number one most obese job is a truck driver. Your hypothesis is that chemicals cause obesity. You cite cleaning services workers as receiving substantially more chemicals due to their work than the average person. Why then, are truckers more obese? If this is the primary factor causing obesity, and these people are receiving substantially more exposure than everyone else, why aren't they substantially the fattest group?

Also fwiw, the idea that healthcare support workers are supposed to represent the largest exposure to PFAS because they're handling garments is ridiculous. I doubt healthcare support workers are even in the top 10% of actual exposure levels.