JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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Remarkable boost for immune systems after fasting

There’s a fascinating study out this week suggesting that if we fast for three or four days a couple of times a year we can regenerate white blood stem cells. Fasting cuts down the number of white blood cells during the fast, but afterwards they recover, and then some.

This new result comes from both mice and phase I clinical human trials.  Probably in paleolithic times, famine or at least hungry days were a part of nearly everyone’s life. Many different philosophies and religions have fasting traditions. Apparently our genes are selected to deal with that, and being short of food makes the immune system do a kind of efficiency sweep. Perhaps access to unnaturally continuous food stops our stem cells from reactivating?  Something to think about from Killjoy Jo. Yes, fasting is not exactly fun, but nor is cancer. For what it’s worth, the hard part of a fast is usually the start.

Obviously, consult your doc, do your own research, etc.

The NZ Herald

Fasting for three days can regenerate the entire immune system, even in the elderly, scientists have found in a breakthrough described as remarkable.

University of Southern California

Fasting triggers stem cell regeneration [...]