Peter Attia's body fat increased from approximately 7% to 16% and he lost muscle mass over a decade while his body weight remained unchanged.

“lost so i am on january 4th of this year i weighed the exact same amount that i weighed 10 years ago in may of 2011. so for all intents and purposes over a decade my body weight was unchanged i'm embarrassed to tell you how much my body fat went up right it went from about seven percent to 16 percent over a decade um so you can do the math right like it's pretty straightforward i got fatter i lost muscle”