The Official Cambridge Guide to IELTS Practice Test 3

hair on the body than we do now and there are or were two main reasons for having hair: one is to provide warmth, but As humans have worn clothing for many years, body hair has reduced significantly, the other is for protection and again This is not as significant as before, but hair still benefits areas of the body such as the head and around the eyes, now hair whatever it is. It is for and wherever it is in the human body it is mainly composed of a protein called keratin this by the way is also found in the nails in fact it is keratin which makes them flexible and without it they would be very rigid another interesting fact about hair is that It is very strong, as strong as iron, in fact, a single strand can support a weight of up to 100 grams.

This may not seem like much, but a full head of hair can support up to 12 tons, which is equivalent to a couple of elephants, which is simply incredible, although I advise you not to put this to the

test

, humans lose up to 100 strands of hair a day, but we have quite a bit of hair to begin with, there are some variations depending on hair color, but for an average adult. The strand count is 100,000, so losing 100 a day is not so bad, although this is the average: red-haired people have about eighty thousand strands of black or brown hair, one hundred thousand, and blondes have about one hundred twenty thousand, so hair used to be important for The reasons I mentioned above, but nowadays I would say that the main importance of hair is the fact that it is a big business, apart from the money involved in cutting the hair, the shaving, trimming, etc., a fortune is spent on hair products alone, only in the UK do consumers spend more. 5 billion pounds every year on these, so below I would like to give you a quick overview of the structure of hair, as you can see along the length of the hair there are three main parts called the bulb, root and stem, one. the hair is fixed at one end under the skin at the bulb the bulb acts more like a cap enclosing the end of the hair on the head the next part of the hair is the root and this is the part of the hair that is just under the skin and in terms of hair production is the most important, this can be considered the control center of each strand of hair and is where the glands are located, these produce oil that flows throughout the hair and health The root determines the overall health of the hair strand, the last part is the stem and this is the hair that is above the skin and, of course, is what we can see.

Fortunately, this is not active and I say fortunately because otherwise it would be very painful to have your hair. haircut and finally, I would like to go over some factors that impact the overall health of the hair, like any other part of the body, our diet, that is, what we eat, is extremely important for the condition of our hair, but while a change in your diet, for example eating unhealthy foods, will soon show on your skin. Changes to your hair will take much longer. A change in diet today could take several months to have an effect on your hair, so what's the key to healthy hair?

Eating well, a balanced diet is the most important thing. There are a number of vitamins that are vital for good hair health, the main ones being vitamins C, D and E, and in a balanced diet, all of these vitamins should be available if you need a vitamin boost. c, for example, one of the best things to eat is blueberries for vitamin D, the best examples are fish, mushrooms and eggs, and for vitamin E, nuts and seeds, so let's move on to you.