According to statistics, by the age of 35, 2/3 of men will experience some degree of appreciable hair loss, and by the age of 50, approximately 85% of men have significantly thinning hair.  On the other hand, 40% of hair loss sufferers are actually women.  Many people do not even notice their hair loss until they lose significant number of hair especially when they are young -20’s and 30’s.   Women usually do not get bold like men but experience thinning hair in the middle front and crown area.  When they reach to 50’s and 60’s, most women start noticing thinning hair and hair loss.  But in many cases, their thinning hair actually started in their 20’s and 30’s.  Hair loss can happen at any age because of variety of reasons, not only by hereditary reason.  Therefore, early detection and preventive treatment are the key to healthy hair.

  1. Anagen: Active hair growth that lasts between two to six years
  2. Catagen: Transitional hair growth that lasts two to three weeks
  3. Telogen: Resting phase that lasts about two to three months; at the end of the resting phase the hair is shed and a new hair replaces it and the growing cycle starts again.

Hair Regrowth Cycle

There are about 100,000 hairs on scalp.  At any given time, about 90% of the hair on scalp is growing and 10% is either on transitional or resting stage.  Hair grows about 6 inches a year for most people.  As people age, their rate of hair growth slows.   About 50-100 hair falls a day is considered to be normal.  More hair falling than this will be excessive.   Each follicle has its own life cycle that can be influenced by age, disease, and a wide variety of other factors.  Hair loss occurs when cycle of hair growth and shedding is disrupted or when the hair follicle is destroyed and replaced with scar tissue.  This life cycle is divided into three phases: