believe it or not, but vinegar is acetic acid...........& acetic acid is one of the many waste acids that our bodies put off as a by product of biological activity.............so by adding more, u could b over loading ur tissues..........the reason some people get some relief from it, is it is an acid.........the stomach' Ph rises all the time & when u don't produce enough hydrochloric acid (HCl) in ur stomach, there's very little to keep the Ph low, where it's suppose to b, around 2-3 when not eating, after food is added, it's suppose to go lower..........so if the Ph is going up & ur own stomach can't get it down in the normal way, then it can borrow those waste acids to try to do the job in a pinch.........& ur kidneys still have to get rid of all those waste acids.........if u've been sick a long time, it can slow down ur kidneys, so there is more of these wastes running thru ur blood, building up...........& by recycling something that is already a waste, it can end up being a real problem........now, don't get me wrong, i did the whole vinegar thing...........until it didn't work anymore & i ended up throwing up alot........my body just couldn't take anymore wastes, i had enough all by myself, w/o adding more..........vinegar is not suppose to b the acid ur stomach uses, that's HCl............this is what ur stomach needs.........it's the only inorganic acid ur body produces naturally..........& it does alot more than keep the Ph low in ur stomach, alot more..........it's necessary for life.........