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Hair & Causes of Hair Loss


About Hair
Hair consists of a shaft which is above the skin and a root which is below the skin. The root is sunk into a hair follicle. With the exception of a few growing cells at the base of the root, hair is essentially made of dead tissue. The hair is mostly made from a protein called keratin. Hair is grown by a process of rapid cell division at the base of the follicle. As those cells are pushed out from the hair follicle, they harden and undergo pigmentation (gain colour). This is what we know as hair.

Hair growth occurs in cycles. The normal cycle of hair growth lasts for 2 to 3 years. Individual hairs grow approximately 1 centimeter per month during this phase. About 90 percent of the hair on your scalp is growing at any one time. About 10 percent of the hair on your scalp, at any one time, is in a resting phase. After 3 to 4 months, the resting hair falls out and new hair starts to grow in its place.

The Causes of Hair Loss

While some hair loss may be a natural process of losing hair for renewal, excessive hair loss is a condition that is for some a traumatic and stressful experience. There are many causes for balding, such as: genetic disorders (androgenetic alopecia), hair patch loss (alopecia areata), hormonal imbalances, stress, poor health or diet, medications, chemotherapy, etc. For men the major cause of hair loss is androgenic alopecia. While for women it is mostly caused by hormonal imbalances.

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