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[–] redditrunbyfascists 0 points 13 points (+13|-0) ago 

This is poor reasoning. I actually studied molecular biology and biochemistry. I have taken the courses on metabolism.

What we are interested in here is metabolism specifically.

The reason caloric restriction works is that it induces the production of protective proteins to help people survive damage that would be induced by starvation.

Fats take in excess calories. This doesn't make them age faster, they just carry the weight as fat.

Fats die younger because of the problems of being fat: heart disease, type 2 diabetes, cancer, joint degeneration, etc.

If changes to metabolism were the key to aging, then the athletes who plow through 6000 kCal/day would drop dead at 40 instead of often living into their 80's/90's.