Whats the science behind this?

[Anonymous]

So i was actually like anorexic skinny as a kid, then like model skinny as a teen and then around 19 it has become hard for me to lose weight irrevocably. i was that person that could eat whatever and still be bones. after that summer around 19 it has never been the same. does anybody know what happened from scientific point of view

Updates

1 y

or if anybody has similar story

[Breanna_nonbinary]

It’s called age. In my 20s I would eat a steak for lunch every other day. I would eat whatever I wanted and never gain weight. But then my body changed and the chemistry changed. It was harder to digest things, and the weight I gained didn’t want to leave. It’s all part of getting older.

[PeachyPie93]

Metabolism slows down as you get older, but you could be like my sister who could eat 2 McDonald's meals for supper and not gain anything, she was always stuck at 100lbs. She had a thyroid problem, the doctor gave her pills to fix it and now she can't stop gaining because she is used to always eating garbage and as much as she wanted lol.

[Hsisjwbwbjsjd]

Could be something to do with age like others have suggested, or it could also be a change of lifestyle. Maybe you have more stress, you're eating more junk food or you exercise less.
I'm not a professional and we don't have enough specifics about you.
If it's a problem for you, try getting in touch with a doctor.

[thearchjoker]

your diet killed of the useful species of gut bacteria harming your metabolism combined with hormonal changes that happen at these ages

[Makeushiver]

Your metabolism slows down after the most of your physical growth is complete so you don't require as many calories