The answer is almost definitely yes, at least in great part. Furthermore, the top two killers in America are heart disease and cancer. 80% of heart disease is preventable by diet - avoiding foods that cause insulin resistance (sugar) and gut dysfunction (chemicals). The top cancer and many others are triggered by environmental variables (chemicals).

And I know I am going to be downvoted for not citing, maybe someone who agrees can help back me up, and also for saying "chemicals" and there are people here who cringe because everything is chemicals and most chemicals are good, I want to be clear I'm talking about the bad chemicals here- PFCs like the ones in the article, heavy metals, other petroleum-derived baddies, and some others.