Do you have a source on starving yourself/fasting can cause you to die? I know that’s true for cats but never heard of it in humans, our bodies are designed to burn our fat reserves to create energy.
This guy fasted for a year but consumed some essentials.
I think if you consume nothing but water you will die at some point.
https://en.m.wikipedia.org/wiki/Angus_Barbieri's_fast
For 382 days ending on 30 June 1966, he consumed only vitamins, electrolytes, an unspecified amount of yeast (a source of all essential amino acids) and zero-calorie beverages such as tea, coffee, and sparkling water, although he occasionally consumed small amounts of milk and/or sugar with the beverages, especially during the final weeks of the fast.
VERY important to note that he did this while in close communication with a doctor, consuming vitamins and other essential nutrients. No one should try to do this alone.