Guido Kroemer practices intermittent fasting by eating one meal per day and undertakes prolonged water fasts of five days twice per year.

“So, usually in my ordinary life, when I'm in Paris and working, I only have one meal per day. So I have dinner with cheese and wine containing spermidine resveratrol. It's an ideal combination because inhibiting the acetyltransferase and activating the deacetylase will have, of course, a synergistic effect. Oh, you do? Well, if you can show this in mice and this is an excuse for me to... Yeah, wine and cheese go great together. ...profit from a banquet combination. And I do also practice some fasting twice per year also when I don't eat anything for five days.”