Duh ... like this is something "new" ... common sense would bring most to the same conclusion. I've been on this soapbox, for years now. However, it is not just "man made" chemicals; it's things like manufacturing pollutants, chaotic electric we're surrounded with ... electricity, light bulbs, microwaves, radio waves, cell phones, towers, computers, etc., etc.
Our "man made" society is killing us ... from the ground up! Much of our global deterioration in food supplies, lack of radical health and wellness is, in essence, reflects on man. Man made = messes made by man.