[benlambert]

48-72 hours is not long enough to regenerate your immune system.

Valter Longo has recommended at least 4-5 days to treat auto-immune disorders [1].

I've done 5 day fasts. For something serious I would try 7.

[1] http://joshmitteldorf.scienceblog.com/2014/06/12/the-three-d... “3 days is optimal for mice. For humans 4-5 minimum, depending on what you are trying to achieve”