Pubmed to see if there are any scientific studies done. There is a lot of crap information on health and well-being on the internet, I prefer to have the information backed up by science.
FWIW, a common criticism of exercise and nutrition science is that they're not actually science and that most published studies in these areas are designed in a way that prevents them from actually testing the stated hypothesis.
Yes but there are enough claims out there you need to get rid of false positives. And some stuff is testable. Intermittent fasting for example has rat studies backing up the claims to an extent - that it extends lifespan and other aspects of health. I haven't seen anything comparable for paleo diet (comparable experiments don't really exist). The theory is plausable, but I have yet to see evidence that its actually beneficial. For that reason I would be more interested a fasting diet rather than a paleo one.
I haven't stayed up to date on the nutrition science stuff much, but there are studies showing that low carb, high fat diets (paleo, essentially) are better than the opposite. Here's a researcher presenting the results of their study as well as discussing several others[1]. Their study had 311 subjects, but most of the other studies the researcher mentions have extremely small sample sizes (one of the common problems with many nutritional science studies).
Exercise science is really kind of a joke, though. The Starting Starting Strength community does an annual review of the year's important exercise science studies. Almost every single one is not capable of actually testing the stated hypothesis. Here's the review from 2012, if you're interested[2].
