In 1965, an extremely obese 27-year-old male, weighing in at 456 pounds
fasted for 382 days (one year and 17 days) and lost 275.5 pounds.
Doctors from the University of Dundee monitored his condition throughout his fast. During his fast, he obese man recorded low glucose levels for 100 days and defecated every 40 to 50 days. He was given potassium tablets to keep his heart healthy and multi-vitamins every day.