>1) Cancer exists (to a small extent), even in wild animals living according
>to laws of nature,

do you have references for this affirmation ? i have been butchering for
many years wild animals and still didn't find tumors yet.


there is wild animals having access to their original diet and life style
 more and more  rare considering there is  almost no  healthy wild
environnement left)
and there is wild animals adjusting to human made or polluted ,
environnements or even food sources ( garbages , domestic crops etc...)
for humans it is one out of almost 3 here that will developpe tumors in
their life.
jean-claude