Weight gain associated with PFAS exposure was also found to be more significant than weight gain linked with suboptimal diets.

Exposure to certain environmental toxins could therefore explain the variable success of some diets, such as low-carb diets.

Previous studies have shown that PFAS can alter energy metabolism, glucose control and thyroid hormone homeostasis - all of which have implications for weight.

https://www.euronews.com/green/2023/04/20/diet-exercise-and-forever-chemicals-new-research-shows-links-between-toxic-pfas-and-weight

https://onlinelibrary.wiley.com/doi/epdf/10.1002/oby.23755

https://www.ehn.org/pfas-weight-gain-obesity-2659877152.html