Hard fast (e.g. hunger strikes) usually take about 2 months to kill a healthy adult.
On the one hand according to the wiki this is more progressive removing food by degrees which would make the process a lot longer.
On the other hand being a mostly ascetic practice I'd assume it's done by people who have a lot less reserves (body fat and muscle) which would shorten the process significantly (the 207kg Angus Barbieri famously fasted continuously for 382 days[0] breaking his fast at 82kg, although he supplemented his liquids — water, tea, and coffee — with vitamins, electrolytes, and yeast extract, the latter for essential amino acids).
[0]: technically he was put on a recovery diet of salting then sugaring his water for 10 days, so ate no solid food for 392 days, breaking his fast with a boiled egg and a slice of buttered bread
Hard fast (e.g. hunger strikes) usually take about 2 months to kill a healthy adult.
On the one hand according to the wiki this is more progressive removing food by degrees which would make the process a lot longer.
On the other hand being a mostly ascetic practice I'd assume it's done by people who have a lot less reserves (body fat and muscle) which would shorten the process significantly (the 207kg Angus Barbieri famously fasted continuously for 382 days[0] breaking his fast at 82kg, although he supplemented his liquids — water, tea, and coffee — with vitamins, electrolytes, and yeast extract, the latter for essential amino acids).
[0]: technically he was put on a recovery diet of salting then sugaring his water for 10 days, so ate no solid food for 392 days, breaking his fast with a boiled egg and a slice of buttered bread
Liquids are also removed (gradually). For someone already in weakened condition, I would be surprised if the process took longer than two weeks.
Ah I'd missed that part, in that case yes it would go much faster, dehydration is a quick way out (though not a comfortable one).
The earliest was under a day. The latest was about 2 weeks. I've heard of about 45 days one as well.. but thats unusual.