I remember reading on the Internet that head hair serves no practical purpose other than cosmetic. I totally disagree with that. When I was younger, I spent too much time out in the sun in Southern California. In my 20’s my hair was thinning and several bad sunburns developed into Actinic Keratosis in my later years. I got a prescription for 5 fluorouracil which is an anti-cancer medication. This did a good job of getting rid of the scaly red spots but it makes you look like a mutant for about 6-7 weeks while the area is being treated.
I would be interested in hearing from Dr. Woods and Dr. Umar regarding any new studies related to ways of inhibiting this skin problem.
I read recently that in Australia where people are active outdoors in the sun, Actinic Keratosis is very common. I also read in a recent medical study that a low fat diet helps fight the reoccurence of Actinic Keratosis.