Why Doesn't Hair Come Out in Some Parts of the Body

Why do men have hair in our arms and feet, but not in the palms of our hands and feet? It is a fundamental question in human evolution that researchers at Perelman School of Medicine at the University of Pennsylvania say have found traces in a new study.

Their findings indicate the existence of a natural preemptor created in the development of the skin, blocking a beacon known as the path WNT, which controls hair growth.

“We know that signaling W NT is critical of developing hairs. By blocking it, it causes hairless skin and causes more hair”, Sarah E. Milar, Ph.D. and Albert M. Kligman Professor in Dermatology and Director of the Penn Source Center for Biology and Disease Diseases.

This natural controller is known as Dickkopf 2 (DKK2) a protein found in specific embryoal tissues, where he plays a host of roles. Researchers tested the skin of mice -- roughly the lower human hand and discovered that the DKK2 was more than expressed.

Moreover, when genetically departed DKK2, the paint began to be reduced in this leather region.

This is important because it tells us that WNT, which is still present in the hair regions, is being blocked”, Milar said.