how long can a body go without nutrition
We can't live on air and sunshine alone. The human body needs food and water to survive. A human can go for more than three weeks without food (Mahatma Gandhi survived 21 days of complete starvation), but water is a different story.At least 60% of the adult body is made of it and every living cell in the body needs it to keep functioning.hree to four days would be more typical. You can go 100 hours without drinking at an average temperature outdoors, Claude Piantadosi of Duke University told Fox.  If itâs cooler, you can go a little longer. If you are exposed to direct sunlight, itâs less.. USGSAs much as 65% of the human body is water.