how long can a person go without food and water before dying
Report Abuse. Usually you can go three days without water before the body starts to seriously shut down. As your blood thickens the heart has a harder time pumping it until it just gives out. As for food people have lasted three weeks or more but doctors will tell you three weeks is about the max.kevpet2005 Â· 9 years ago.sually you can go three days without water before the body starts to seriously shut down. As your blood thickens the heart has a harder time pumping it until it just gives out. As for food people have lasted three weeks or more but doctors will tell you three weeks is about the max. kevpet2005 Â· 9 years ago.