Bobby Sands died after 66 days of hunger strike, and he was of average weight; others lasted about the same time (± a few days). You can survive for a long time

Bobby Sands died after 66 days of hunger strike, and he was of average weight; others lasted about the same time (± a few days). You can survive for a long time without food if need be, but you also won't be able to do much once starvation kicks in.