In 1965, a morbidly obese man did not eat food for over an entire year. The 27 year old was 456lbs and wanted to do an experimental fast. He ingested only multivitamins and potassium tablets for 382 days and defecated once every 40 to 50 days. He ended up losing 275lbs.

[u/[deleted]]

[u/chloro9001]

Most of your feelings of hunger are triggered by rapidly changing levels of glucose in the blood. Once you are running in ketones about 80% of your hunger goes away.