[–] c-fox 0 points 18 points 18 points (+18|-0) ago (edited ago)
Fatties look older for two reasons. One is that a fat face has less expression because the muscles are hidden under excess tissue. As people get older skin loses flexibility and sags, and fat on faces also sags, so both older people and fatties have less expressions.
Also we subconsciously associate fatness with older people as young people are generally leaner.
[–] Deathstalker 0 points 6 points 6 points (+6|-0) ago
Your body grows new cells when fed. It repairs old cells during states of caloric restriction. The human life expectancy went up during the great depression because of food shortage. Probably also because people were getting chubby even then.
I posted a video that touched on it not too long ago but it got too many rees
[–] Grave_Mercy 1 point 7 points 8 points (+8|-1) ago
This makes sense, as your cells replicate and die each replication brings the chance of a bad mutation (cancer), fats have significantly higher chances of getting cancer.
[–] mmmmdonuts 0 points 2 points 2 points (+2|-0) ago
Hey, that's interesting, never thought of it like that before.
[–] hamsbegone ago
All of us endurance athletes must be about to die by the "lifetime calorie limit" rule then...
[–] redditrunbyfascists 0 points 13 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.
[–] Unsung_Heroes_again 0 points 5 points 5 points (+5|-0) ago
What about swole bros?
[–] [deleted] 0 points 2 points 2 points (+2|-0) ago
[–] Shitlord2016 ago
That's what I was thinking too.
[–] damnbiker [S] 0 points 4 points 4 points (+4|-0) ago
Good question. I don't know, maybe there's something about intensive exercise that combats or negates the effects of aging by excess calories. There are a lot of things that happen in your body when you exercise intensively, things like hormone level changes and the like. I'm no scientician, I'm just putting out a theory here.
[–] Unsung_Heroes_again 0 points 1 point 1 point (+1|-0) ago
😄 sorry playing the devils advocate.
[–] Daimao 0 points 10 points 10 points (+10|-0) ago
Scientician here. People who eat more because they exercise more still produce more reactive oxygen species (ROS) which are implicated in aging and naturally occur during the process of breaking down food. Antioxidants are supposedly good at counteracting these evil molecules. In addition, there are probably benefits to moderate exercise in terms of life span which could possibly cancel out the damage from increased caloric intake (no source, just speculation). That being said, people who live to be 100 are the ones you see walking every day and only eating what they need, so I think that there is a sweet spot between limiting calories and exercising that results in a longer life than being sedentary and restricting calories.