What are the Reasons Behind Hair Loss ?


Hi friends today i would like to say about Hair Loss. Before going to that i am giving brief information on Hair.

          Hair is made up of keratin (protein) which is produced in hair follicles on the outer layer of skin. These Follicles are responsible for production of new hair cells. Generally hair is a thread of dead keratin cells. The average adult head has about 100,000 to 150,000 hairs and loses up to 100 of them a day.

         At any point of time, about 90% of the hair on a person’s scalp is growing. Each follicle has its own life cycle that can be influenced by age, disease, and a wide variety of other factors. The life cycle of Hair is divided into three phases,

Life Cycle of Hair :

life cycle of hair

Anagen Phase:

anagen phase-reason behind hair loss          The anagen phase is the “growing” phase of a hair follicle. In this phase hair follicle starts to grow back to full size and extend deeper into the skin. Scalp hairs grow about one-half inch per month during the anagen phase.

          The period of time typically ranging from 3 to 8 years. This is a rapid rate of cellular growth compared to most other tissues in the body.

Catagen Phase:

categen phase-reason behind hair loss          In this phase Hair stops growing and the hair follicle starts shrinking. This “regression” period is called the catagen phase. The catagen phase for scalp hair follicles lasts about 2 to 3 weeks

Telogen Phase or Resting Phase:

talogen phase-reason behind hair loss          During this phase the follicle appears inactive and the hair shaft may also be shed during this period. Shed hairs may appear on bedding, on clothing, in combs and brushes.Many shed hairs simply go down the drain after shampooing. The time period of this phase is 2 to 4 months.

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