Have you ever wondered why hair grows on some parts of your body, but not others?
New research offers a possible explanation. Scientists found that hairless skin secretes a protein that blocks a signalling pathway (WNT) that controls hair growth.
Called Dickkopf 2 (DKK2), the protein is found in specific embryonic and adult tissues and has a variety of functions, the University of Pennsylvania researchers explained.
They found that plantar skin from mice – similar to the underside of the human wrist – had high levels of DKK2. When they genetically removed DKK2 from the mice, hair began to grow in this normally hairless skin region.
Read more: https://www.health24.com/Medical/Hair-loss/News/unlocking-the-mysteries-of-hair-growth-20181130