Do Our Bones Influence Our Minds? : The New Yorker

"But Karsenty has long believed that our skeletons do a lot more than just give our bodies their shape. In 2007, he suggested that bones play a crucial role in regulating blood sugar: mice engineered to lack osteocalcin were essentially diabetic; they were less sensitive to insulin, and produced less of it. When he provided osteocalcin, however, their insulin sensitivity and blood sugar normalized."