Spuds,

You may be confused about chemicals. Everything is made up of chemicals--people included. Some chemical compounds are synthesized by man and some by nature. There is no known difference between the same pure chemical synthesized by man or by nature.

Note also that there are some very toxic chemicals produced by nature--probably the most toxic ones.

I can understand why you could be confused by this. There is a lot of misinformation out there on this topic.