Researchers also identified the following biological reasons for absence of grains in the dietary regimen of cave - men. (paleodietfoodlist.net)
Through the knowledge I gained about the physiological and biological reasons underlying my cravings, I was finally able to cut myself some slack and stop feeling like a failure. (replenishpdx.com)
It turns out there are even biological reasons that we as women crave chocolate. (wellnessmama.com)