Doomsday,
do you K NOW the acceptable cancer levels for every chemical in your drinking water and all drinking water throughout the USA , for the pesticides in your food and for the air you breath? This is called MANANAGED RISK; the balancing of the negative effects of man added chemicals to other risks.
This was discussed at my kitchen table when I was growing up many years ago and it still holds true.
All of life is managed risk. If you want no risk, think of where you need to live.
What is your risk tolerance? Polo etc vs possible complications
Are you old enough to know the scare that polo caused and do you know how BAD the effects of polo are? If you do you, think about it before you say anything else.; i.e. Iron lung – look it up!