if you black out and hit your head on hard tile floor resulting in a concussion it would be possible to cause some brain damage. this should be avoided of course and i would hate to see you going off to the toilet wearing a football helmet or a big pillow strapped to your head. you may be passing out because of straining -creating a vasovagal response (you can look this up on the internet). there can be other reasons of course but this is the main one to research. try to not strain during a bowel movement. use a stool softener drink plenty of water and increase fiber in your diet so that you avoid being constipated (dry hard stools). take your time on the toilet. read a good magazine. don't hold your breath or tighten your neck muscles during defecation (this is where the problem arises).
can a person die from blacking out while going to the toilet number two? . i black out every time i use the toilet for any major or semi major pooping. i know it is disgusting to talk about but i do i pass out. or everything goes black for a bit. what causes this? and is it gonna do permanent damage?