I am a 50 year old male in good physical shape. Yesterday, I ate a banana on a relative;ly empty stomach. 30 minutes later, I had strong upper abdominal cramps, with sweating and dizzyness. Felt like food poisoning, and when I stood up to go to the bathroom, I fainted -- and blacked out for about 5 seconds. After hydrating myself, I soon felt better. But no diarrhea or unusual bowl movement afterwards, yet no further symptoms or problems. Could it still have been a quick dose of food poisoinng, or something else?