Most healthy humans can live up to eight weeks without food!
But humans are much more vulnerable to dehydration. Our bodies are 65% water, and we constantly lose water through sweat, urine, feces, and even lose water with every breath we take.
Even in average temperature, a person could only live 3-5 days without water, although there are some cases where individuals have survived up to 12 days.
Healthfacts.blog 