...also "(...) prolonged fasting cycles -- periods of no food for two to four days at a time over the course of six months -- kill older and damaged immune cell

...also "(...) prolonged fasting cycles -- periods of no food for two to four days at a time over the course of six months -- kill older and damaged immune cells and generate new ones (...)" [1] [1] https://news.ycombinator.com/item?id=8831739 https://news.ycombinator.com/item?id=8831739