As a subject matter expert in human physiology, I can tell you that the human body's resilience varies greatly from person to person, but there are some general guidelines regarding survival without food and water. Without food, **some individuals may survive for an extended period**, potentially exceeding three weeks, as evidenced by historical cases like that of Mahatma Gandhi, who reportedly survived 21 days of complete starvation. However, the situation is much more critical when it comes to water. The human body is composed of at least 60% water, and every cell relies on it for essential functions. Most people **cannot survive more than a week without water**, with the exact time varying based on factors such as temperature, physical activity, and overall health. read more >>

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.read more >>