Rate of Hair Growth Per Year

| August 31, 2010 | 0 Comments

Hair grows upon a genetic basis. If your friend has a longer hair than you, that doesn’t necessarily, mean that she takes better care of her hair. Hair can grow also by the diet that one has and by the stress levels. Hair growth per year is also influenced by the seasons. The main reason is the absence of the sun and the body’s way to protect itself in colder seasons by depositing vitamins and taking them away from parts that he does not need them, like the hair.

So, in the presence of the sun, the body produces vitamin D that helps calcium to stay in bones and thus increasing the keratin production. Furthermore, in the winter season, the sun is mostly absent, so the body produces a lower quantity of D vitamin and the body’s keratin production drops. So, hair grows by different rates every season.  If the average rate of growth in one centimeter a month, taking into consideration the season fluctuation, hair can grow in one year from ten centimeters to twelve centimeters. Other factors that influence hair growth are the regions. In colder regions the hair of one person can grow with a rate of a half of centimeter per month. But, the hair is thicker and a lot stronger than the hair of people that live in warmer places. The reason fir this has also a genetic basis. Hair is supposed to grow for protection, thus being in a colder region, people need more protection from the cold. In warm regions, hair can grow up to two centimeters per month reaching an average of 16 centimeters per year also being influenced by other things such as diet. Because people that live in warmer parts have an easy access to fruit, their diet is very rich in vitamins that also help hair to grow faster.

Other than this, the average hair growth for people that live in regions that are going trough the four seasons is ten up to twelve centimeters. Hair growth can be also determined by the age. Young people grow hair a lot faster than old people.

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