A considerable portion of the research on baldness prevention is now honing in on the role of vitamin D in hair growth. A receptor to which the vitamin binds is responsible for activating hair growth. In a study published in the December issue of the Journal of Investigative Dermatology, researchers reported that a molecule called MED is associated with suppression of the receptor’s actions. Mice without MED appeared to grow more hair, thus providing researchers a future target for hair replacement therapies. Other scientists, in a paper published in the Journal of Biological Chemistry, discovered that the LEF1 molecule also can cause activation of the vitamin D receptor without vitamin D even being present.