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Hair growth

Hair growth

6 Things that controls the growth of hair

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How fast does hair grow

Time

The rate of hair growth varies considerably but on average it is one centimeter per month. The growth is greater in summer than in winter. It is maximum in the ages between 15 and 30 years. Cutting or shaving does not make hair grow faster. Neither does trimming effect the growth rate in any way (though trimming does make your hair look good by eliminating the straggly ends).

Each hair undergoes cyclic activity in three-phase: the growth phase or anagen last 3-4 years; following anagen is a short period of transition or catagen, following which is the phase of telogen or resting phases (2-3 months) the hair becomes detached from its root and falls out, as a new growing hair replaces it in the follicle. 

At a given time, 10-15% of the scalp hair is in an inactive phase, ready to fall out, while the remaining are in various stages of growth. A loss of up to 100 hairs per day is normal and is something you should not worry about as most of the lost hair would be replaced. With age, however, the rate of replacement slows down;  so as you grow older, there is a natural tendency of some amount of sparseness of your scalp hair 

What controls the hair growth

 
Think

01. Family background

Family background and racial factors are very important for the quality as well as the quantity of hair. Good quality long hair runs in families, and so does the all familiar male types of baldness.

02. Nutrition

Nutrition

Hair, like any other aspect of your looks, is best improved by testing your system well. A good balanced diet is what is really required. An inadequate diet disturbs the structure, the growth and the color of hair. When there is a total deficiency of protein, the hair becomes spares, fine, brittle, dry, and light-colored. The severe hair loss seen after crash diets is primarily due to protein deficiency. High protein diets, especially those containing gelatin and cysteine, increase the rate of hair growth. Deficiency of pantothenic acid leads to premature graying of hair in animals. Lack of essential fatty acids also caused hair to fall. Iron deficiency, especially in women, has been associated with hair loss, while iron supplementation hastens the growth of hair. Zinc deficiency also leads to hair fall. So an ideal diet for hair growth should contain adequate amounts of iron, zinc, protein and fatty acids. 

03. Age

Age
Age

With increasing age, there is a decrease in hair growth. The replacement of shed hair is also incomplete and this results in sparsity of hair. In men there is a recession of the hairline and sometimes definite areas of baldness on the male sex hormones – the andorgens. Rarely this hormone-mediated baldness is seen in women too.

04. Hormones

Hormones
Hormones

A number of other hormonal disorders can cause hair loss – thyroid disorders being commonest. Though during pregnancy, hair loss slows down or may even stop altogether, excessive hair fall commonly occurs three to four months after delivery. Contraceptive pills also cause excessive hair loss and this stops when the pill is discontinued. 

05. Illness

Ill

Any severe illness, be it physical illness (surgery, accident, fever, etc.) or even mental stress, can result in hair loss. However, this hair loss is reversible and recovers in about 3-6 months. 

06. Drugs

Many drugs like anticancer medication can give rise to hair fall.
 
Finally, if you are suffering from severe hair fall and fear it might bring you at the forefront of going bald, consult a good doctor to find out any  health issue as hair loss cause can be multi factorial and treatment varies based on sex, age and diagnosis of medical conditions.

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