My auntie could eat a lot and was always super thin. Then she turned 50 and her metabolism stopped keeping up and gained a lot of weight. Saw the same happenin

My auntie could eat a lot and was always super thin. Then she turned 50 and her metabolism stopped keeping up and gained a lot of weight. Saw the same happening with someone turning 25, super thin athletic body into gut over the course of 2 years, diet was the same for 5 years.