Male and female hair loss- Hair grows from the follicle, underneath the skin. The hair is fed by blood vessels at the base of the follicle. Between starting to grow and falling out years later, each hair passes through 4 stages: Anagen, Catagen, Telogen and Exogen. Each hair is at a different stage of growth cycle.
Anagen (Growing Phase)
- The growing phase lasts two to seven years and determines length of our hair.
Catagen (Transition Phase)
- This is the transitional stage that lasts about 10 days. The hair follicle shrinks and detaches from the dermal papilla.
Telogen( Resting Phase)
- This is the resting phase which lasts around 3 months. Around 10 – 15% of hairs are in this phase.
Exogen (New hair Phase)
- This is part of the resting phase where the old hair sheds and a new hair continues to grow. Approximately 50 to 150 hairs can fall out daily, this is considered to be normal hair shedding.
Causes for hair loss
Most common cause of hair loss in men is androgenetical alopecia or Male Pattern Baldness. This occurs in men whose scalp hair follicles are genetically susceptible to the effects of Dihydrotestosterone (DHT), a male hormone. These susceptible follicles are located on the front and top of the scalp. Testesterone is a hormone responsible for secondary sex characteristics in men and there is an enzyme 5-αreductase which converts testosterone into DHT. It is this DHT which causes hairloss in men with genetically predisposed follicles.
Hairloss common in women, too
The idea that thinning hair is a guy problem is a simply wrong. 40% of people who experience temporary or long term hair loss are women. Some have hair that is thinning all over, while others see the centre part gradually widen. Still others develop distinct baldness at the crown of the head. Unlike men, women rarely develop a receding front hairline.
Causes for hairloss in women are Polycystic ovaries, Alopecia Areata, Ringworm infestation, Childbirth, Crashdiets, Tight hairstyles, Stress.