How long would it take someone to pass out from not eating?

Question

Someone that gets light headed easily but overall healthy. Would this person know in advanced to sit down or would the just collapse?

Answer 1

U would know in advance, U will see stars before U collapse. Ur body could go 5-6 days with out food before U start feeling bad. If Ur taking in water it would be longer. Hope this helps or gives U something 2 think about.

Answer 2

Normally you will fall asleep before you "pass out" from not eating. But the body can normall go 36-48 hours without food before you have adverse reactions that strong.