Quote:
Originally Posted by FlamesAddiction
I don't see how there isn't a genetic factor. I mean, humans have known for centuries that if you take beefier animals and breed them together, you will often get beefier offspring.
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This is 100% true, and you and bcb would be correct if we were talking in terms of timeframes of generations and generations and generations. Evolution takes a long time.
Just because McDonalds comes out doesn't make humans evolve in the course of 30 years.
Just because people become obese due to lifestyle doesn't mean their genes have changed dramatically and now their children will be obese. Their children are obese because of lifestyle as well.