My wild guess before reading the article: unhealthy food. A big part of which is herbicides and pesticides. I will now read the article.
[1]: ubiquitous flame retardants, which in America they put in every couch, carpet, and mattress
[2]: ubiquitous microplastics pollution,
[3]: joint effect of Obesity and Ultra-Processed Foods
[1] https://scholar.google.com/scholar?as_ylo=2022&q=flame+retar... [2] https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&as_ylo... [3] https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&as_ylo...