[kahawe]

> I know people who claim that eating a mainly paleo diet makes them feel better.

Well, there are people who claim fasting makes them feel better, too. Or living on allegedly nothing but sun light.

I am not sure this is very good proof since e.g. not eating for a couple of days makes you feel good because it's your body trying to make you more active to gather food... so, as logical as some correlations might sound it seems flimsy to me. The best way is probably to go by blood and medical exams, to see if you actually are healthier.