Your body can meet the majority of your calorie requirements from stored fat, but total starvation is fatal in 8-12 weeks, regardless of initial body weight.
I mean, that guy was eating vitamins and yeast, which sounds like exactly the kind of thing the previous commenter was suggesting you’d need to eat, so maybe they had a point.
I knew a guy who had bariatric surgery, and his doctor told him that he had enough fat stored to live an entire year without eating a single thing.
That’s not how that works. You still need nutrients, fat is energy but you will die in 30 days if you don’t eat.
That is exactly how it works, https://en.m.wikipedia.org/wiki/Angus_Barbieri's_fast
I mean, that guy was eating vitamins and yeast, which sounds like exactly the kind of thing the previous commenter was suggesting you’d need to eat, so maybe they had a point.