Why do obese people have more skin? What makes the skin grow more? Is is just fat on the outside?

Question

When you see those drastic transformations where people lose and keep off a ton of weight, they have to get the excess skin removed surgically. So it can “grow” or stretch but doesn’t “shrink”. Does the skin just stretch out a lot as fat grows inside the body?

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Answer 1

This sub doesn’t explain things anymore like they would to a Five year old 😭😔 so i’ll try

Skin is stretchy, like a rubber band, so when someone gets fatter, the fat on their body pushes the skin out. And when they lose weight, the skin is too stretched out to return to normal, so that’s why there are stretch marks and loose skin