Why do 80 hairs fall out of your head each day?

satguru

Each head hair normally lasts 2 years, and from the total, 80 are the proportion from the many thousand (OK, not in my case) which come to the end of their lives every day. They then enter a short resting phase before starting again (again, not in my case so much). Jul 13 06, 10:06 AM

zbeckabee

Individual hairs alternate periods of growth and dormancy. During the growth portion of the cycle, hair follicles are long and bulbous, and the hair advances outward at about a third of a millimeter per day. After three to six months, body hair growth stops (the pubic and armpit areas having the longest growth period). The follicle shrinks and the root of the hair grows rigid. Following a period of dormancy, another growth cycle starts, and eventually a new hair pushes the old one out of the follicle from beneath. Head hair, by comparison, grows for a long duration and to a great length before being shed. The rate of growth is approximately 1.25 centimeters, or about 0.5 inches, per month. http://en.wikipedia.org/wiki/Hair#Growth Jul 13 06, 11:04 AM