The ProLon fasting-mimicking diet is scientifically rigorous and can be a valuable experience.

“I think it’s a really interesting science. What I like about it is the fact that it really takes this fasting to a scientific level. They’re doing the work. Going on this five-day diet is actually a really interesting experience, because it’s not hard. Maybe on day three it might be a little hard. But one key question that has not been addressed is, if you induce this protective response, how long does it last? And so how often should you do this? Is it something you should do, you know, every three months, or every once a month, or actually once every six months.”