> _Hypogonadal_ men (n = 823) with total T ≤ 12.1 nmol/L (age: 60.6 ± 7.0 years) participated in an ongoing registry study. Among these men 474 (57.6%) were obese, 286 (34.8%) overweight and 63 (7.7%) had normal weight.
Hypogonadism means the gonads don't produce enough testosterone naturally.
So yeah, if you give testosterone to a bunch of old, fat, unhealthy [1] men with hormonal problems, it might help them lose weight and keep them alive longer.
Yes trt is the primary treatment for hypogonadism and the subject of these comments. If your over 40, sit in front of a computer all day for work and live in a city. i highly recommend getting your testosterone levels checked or better yet getting a full panel including vitamin d, hormones, etc.
https://www.nature.com/articles/s41366-019-0517-7