How long can people fast without eating or drinking?

Avatar of Nick John By Nick John Dec6,2023 #drinking #without
How long can people fast without eating or drinking? 10
How long can people fast without eating or drinking? 10

To date, there has been no scientific research on the threshold of human survival without food and water, because these experiments are unethical.

In fact, a person can go weeks without food, according to Dr. Mir Ali, medical director of MemorialCare Surgical Weight Loss Center at Orange Coast Medical Center.

That time depends on many factors such as gender, body structure, food in the last meal and living environment, explains Dr. Andrea Paul, co-founder of Health Media Experts.

For example, people with a lot of stored fat in their bodies often live longer, because in times of extreme hunger, the body will burn this fat for energy, Dr. Ali said.

A study by the National Center for Biotechnology Information on hunger strikes showed that if only drinking water, hunger strikers can last 28 to 38 days.

In general, lean, healthy people reach the critical hunger threshold after losing 18% of their body weight, or BMI falling below 16.5.

Women can fast longer than men and survive at lower BMI levels.

When lacking food, the body will go through a `starvation phase` because there is no longer enough calories needed to provide energy for the organs.

`The body will try to break down tissue and use stored nutrients to maintain life for as long as possible. We have great resilience when pushed to the brink of survival,` Dr.

First, the body absorbs any remaining glucose.

A person can survive for weeks without food, but only two to four days without water.

Additionally, the body will make a significant transition from burning glucose to burning stored fat, this is called ketosis.

The body depletes its fat stores in a few days to a few weeks, depending on how much fat is left.

When protein intake is affected, health deteriorates rapidly, causing osteoporosis or reduced bone density, cardiovascular problems and organ failure.

Experts estimate humans can only live two to four days without drinking water.

According to Dr. Paul, the body can break down tissue to get energy to replace food, but there is no way to compensate for the lack of water.

Thus, without food, humans can survive for weeks by breaking down tissue to get stored fat.

Experts recommend not restricting eating as a form of weight loss.

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