INS and diabetes mellitus: There was a greater decrease in glucose (but not insulin—the same as noted by Lindeberg et al. [28]) in diabetics following the Paleo diet compared to the usual diet, and it is worth noting that, in the Paleo group, the subjects consumed up to 1 kg of fruit per day (both groups reported energy intake, and the height of the glycemic index was at a similar level) [28,51].