system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can some overweight people lose weight with no excess skin, but others skin doesnt go away?
gpt
It depends on how fast the weight loss is, how long the person was overweight, the method of weight loss, and then genetics. If someone was seriously overweight for 30 years before finally getting lipo, they'll have excess skin. If someone was seriously overweight for a short period of time but lost weight through dieting and exercise (a more long term solution versus lipo)  then that person will probably not have excess skin. Also as height mentioned, age is a factor (edit)