I summarized what kind of subjective symptoms there are when the male hormone "testosterone" decreases. Trivial things can get frustrating. It will be a negative thought. Sleep becomes lighter. It becomes vulnerable to stress. You will not be motivated. It is easy to fall into self-loathing. It will be easier to get fat. It makes you tired easily. I lose strength. There will be less morning standing. Libido diminishes. The penis is less likely to get an erection. ...... There is nothing good because the possibility of various illnesses will increase in the future.