There are plenty of examples of other, arguably even more extreme forms of slow religious self-sacrifice: https://en.wikipedia.org/wiki/Stylite https://en.wiki

There are plenty of examples of other, arguably even more extreme forms of slow religious self-sacrifice: https://en.wikipedia.org/wiki/Stylite https://en.wikipedia.org/wiki/Stylite https://en.wikipedia.org/wiki/Sokushinbutsu https://en.wikipedia.org/wiki/Sokushinbutsu https://en.wikipedia.org/wiki/Sallekhana https://en.wikipedia.org/wiki/Sallekhana