Quote:
Originally Posted by Ducay
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.
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I agree with what you are saying. For sure lifestyle decisions are the major factor. Just like with lung cancer. We know that smoking causes lung cancer, but there are still some people with a genetic disposition to it. They might trigger the cancer after 10 years and someone else might smoke for 50 years and never get it.
Being fat if you have a genetic disposition is similar I think. The lifestyle choices trigger it while other people can get away with it easier.