As we get older, both men and women experience some hair loss. It's a normal part of the aging process. Called Androgenetic Alopecia, it accounts for 95% of all hair loss. Androgentic Alopecia often runs in families and affects some people more than others. In men it is often referred to as Male Pattern Baldness. It is characterized by a receding hair line and baldness on the top of head. Women, on the other hand, don't go entirely bald even if their hair loss is severe. Instead, hair loss is spread out evenly over their entire scalp.

Hormones play the dominant role when talking about Androgenetic Alopecia. Simple put, both men and women produce testosterone. Testosterone can be converted to dihydrotestosterone (DHT) with the aid of the enzyme 5-alpha-reductase. DHT shrinks hair follicles causing the membranes in the scalp to thicken, become inelastic and restrict blood flow. This causes the hair follicles to atrophy. As a result, when a hair does fall out, it is not replaced.

Emotional stress, pregnancy, or surgery can also cause our hair to fall out and is usually not noticed until 3-4 months after the stressful event has taken place. Stress can cause a slowing of new hair growth because a larger number of hair follicles enter into the resting phase and no new hair growth is experienced.

Another way in which individuals experience hair loss is due to mechanical stressors on the hair and scalp. Wearing pigtails, cornrows or tight rollers that end up pull on the hair can scar the scalp and cause permanent hair loss. Hair products such as hot oil treatments and chemicals used for permanents can cause inflammation to the hair follicles which can also result in scarring and hair loss. If you are a women, have your female hormones tested. If they are imbalanced, talk to your health care provider about bio-identical hormone replacements.