As I mentioned, Luigi Fontana is in the film and he's big on researching calorie restriction. Google shows he has been doing some studies on calorie restriction

As I mentioned, Luigi Fontana is in the film and he's big on researching calorie restriction. Google shows he has been doing some studies on calorie restriction though I'm not sure which one to point you at, I haven't gotten to reading them yet since I just saw that documentary a few days ago. I know know they've done a study with rats that's shown a link between CR and longevity though and I can at least point you at that. https://www.ncbi.nlm.nih.gov/pubmed/21792819 https://www.ncbi.nlm.nih.gov/pubmed/21792819 That said this is just something I've been reading about recently, still looking into the topic so I don't have any real opinion on it yet.