Yeah I'm pretty sure that's a key sign of kidney failure. It can happen rarely in cases of some crazy workouts, but if this dude is saying all the time then it's probably something worse.

[–] [email protected] 38 points 1 month ago* (last edited 1 month ago) (1 children)

It can happen rarely in cases of some crazy workouts

If anyone's curious about why:

Muscles break down during workouts. They release myoglobin, which is a large protein. The kidneys can usually filter it in small quantities.

If you go too hard and give yourself rhabdomyolysis, your body releases a large quantity of myoglobin and it overloads the kidneys. Large proteins begin passing through the nephrons en masse and damaging them because they're too big.

Now your kidneys are unable to filter properly because the nephrons cannot contract to prevent excess fluids or particles from going into your urine.

[–] [email protected] 11 points 1 month ago

Large proteins begin passing through the nephrons en masse and damaging them because they’re too big.

Just in case this isn't enough warning, note that this can permanently reduce your kidney function and harm your body in other ways as well.

I know it's very unlikely for anyone here to do this, but if this happens you aren't just having a "crazy workout" you are giving yourself an injury and possibly permanently affecting your future health. So please don't exercise until you piss blood.

[–] [email protected] 28 points 1 month ago (1 children)

Also could be a UTI or STI(s). Or he eats beets all the time and isn't particularly bright. Could be anything, spin the wheel of medical disasters!

[–] evidences 9 points 1 month ago

Friend of mine had strep throat as a kid and it somehow ended up infecting his kidneys causing him to piss blood, he's fine now.

[–] [email protected] 7 points 1 month ago (1 children)

but i don’t wanna have kidney failure :(

[–] [email protected] 2 points 1 month ago

Just have someone remove your kidneys then!