Originally Posted by JordanDoucette
Just curious if anyone knows anything about this? A friend of mine has hot flashes. He has normal bowel movements and the hot flashes usually occur when he's having one. It makes him feel like he is going to pass out. He also gets the hot flashes randomly, I've only personally noticed them to come on later in the day/night.
We thought it might be low testosterone levels, but it doesn't appear to be. Any suggestions?
If someone feels faint or passes out during or after straining during a bowel movement, it points to the possibility of conditions called vasovagal hypotension or vasovagal syncope. The conditions get their names from changes in the blood vessels (vaso-) and the involvement of the vagus nerve. The vagus nerve controls much of your digestion as well as the heart.
This is all a fancy way of saying that your friend may be experiencing a form or sudden low blood pressure when he strains at stool because too much blood is shunted to the skin and digestive organs, leaving too little for the brain.
If your friend is constipated or strains too much, it would be a good idea to add more roughage to his diet and drink much more fluids. This should decrease the amount of strain your friend has during bowel movements. And increased fluids will better hydrate his body and also may directly protect him from vasovagal syncope.
This being said, I think it would be best for him to FIRST get checked out by a doctor to make absolutely sure that nothing untoward is going on with his heart.