I was flipping through Total Nutrition by Victor Herbert and discovered these...thought you might enjoy the following tidbits...
Hair grows at the rate of about half an inch a month. (I think everybody knows this)
Hair falls out at the rate of 50 to 150 strands a day...humm
Thinning is not noticeable until about 40 percent of the hairs have been lost.
Scalp hairs grow for two to five years, then rest for two to three months. At the end of the resting period, the hair is shed. Between 10 and 15 percent of the hairs are in the resting phase at any given time.
The shape of the hair follicle determines the type of hair. Round follicles grow straight hair; oval follicles grow wavy hair; flat follicles grow curly hair. (Now you know)
A healthy head of hair has between 80,000 and 150,000 hairs. (This might be on Jeopardy some day)
Blonds have more hair -- 140,000 hairs compared with 115,000 for brunettes and 80,000 for redheads.