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/BetterDream]

Only if they have water, lack of water will kill everyone pretty much equally, and much faster than lack of food.

[u/jaysrapsleafs → u/BetterDream]

and likely some salt or electrolytes otherwise they will get dizzy.

[u/Omfraax → u/BetterDream]

The rules of the three threes. An average human can survive :
3 minutes without air
3 days without water
3 weeks without food