# FAQ: How long can an obese person go without eating?

## How long can a morbidly obese person fast?

Half the patients fasted for close to two months, losing a mean of 28.2 kg; one fourth fasted for less than one month; and the other fourth fasted for more than two months, with a mean 41.4-kg loss. This latter group was heavier initially, and more than 50% attained near-normal weight.

## How long can you survive without food if you are obese?

The limits of the human body

But Barbieri’s extreme regimen is not the only fast for health of eye-popping duration. In 1964, researchers published a study noting that “prolonged starvation” could be an effective treatment for severe obesity, with at least one patient fasting for 117 days.

## How long can a 300 lb person live without food?

For this reason, doctors normally consider 40 to 50 per cent weight loss as life-threatening, regardless of your initial body weight. Total starvation is normally fatal in eight to 12 weeks.

## What is the longest someone has gone without eating?

Most humans cannot survive without food for 50 days. The longest hunger strike recorded is 74 days. According to Dr Sudhir Shah, who examined him in 2003, he went without food or water for ten days in which urine appeared to be reabsorbed by his body after forming in his bladder.

## Can your stomach shrink from not eating?

Your stomach is constantly expanding and shrinking to accommodate your food. You can‘t consistently change its physical size by eating differently or in really small amounts. For example, not eating won’t cause your stomach to shrink over time. And eating small amounts of food won’t “shrink your stomach” either.

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## How much water should a morbidly obese person drink?

“In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.

## Do thin people live longer?

The study, published in the Lancet Diabetes and Endocrinology, showed that life expectancy for obese men and women was 4.2 and 3.5 years shorter respectively than people in the entire healthy BMI weight range. The difference for underweight men and women was 4.3 (men) and 4.5 (women) years.

## What happens if your fat and you stop eating?

After eight hours without eating, your body will begin to use stored fats for energy. Your body will continue to use stored fat to create energy throughout the remainder of your 24-hour fast. Fasts that last longer than 24 hours may lead to your body to start converting stored proteins into energy.

## How long does an obese person live?

For persons with severe obesity (BMI ≥40), life expectancy is reduced by as much as 20 years in men and by about 5 years in women.

## Can you fast for 72 hours?

Water fasting is a type of fast during which you cannot consume anything besides water. Most water fasts last 24–72 hours. You should not follow a water fast for longer than this without medical supervision.

## Is it good to only eat once a day?

Bottom line. Eating one meal a day may be a popular way to lose weight, but it’s likely not a good idea for overall health. Although fasting in general — including prolonged fasting — may benefit health in a number of ways, people can reach the same health benefits using much more sustainable methods.

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## Is it okay to not eat for a day?

Going a day without eating is generally safe and can be beneficial in several ways, including as a weight-loss tool. Fasting does not help weight loss any more than other conventional approaches and can be harder to stick with over the long term.

## What is the world record for not going to the bathroom?

In 2013, a 28-year-old woman from Chembur, India, had to have surgery to remove a “football-sized faecal mass” after 45 days without a bowel movement.

## Who survived the longest without water?

Andreas Mihavecz, an 18-year-old Austrian man, may have survived the longest without drinking water: Police accidentally left him in a holding cell for 18 days in 1979. It’s a fuzzy record, though, since he allegedly licked condensation off the walls of the prison.

## What’s the longest fast recorded?

The longest known fast was in 1971, when a 27-year-old man survived on water and supplements for 382 days and shrank from 456 to 180 pounds. In 1981, Irish republican prisoners refused food for more than two months before dying, but in 2010, a Florida woman on a water-only religious fast died within just 26 days.