An increase in androgens in females can actually change the shape of the hair follicle from round to flat and this can instigate a change in texture from straight to curly. In both sexes, these hormones contribute to increased body hair and, later, balding in males. They are responsible for the development and maintenance of male characteristics, but androgens increase in both boys and girls during puberty. People with hypothyroidism might notice that the lack of sufficient hormones will lead to dry, brittle hair while people with hyperthyroidism might notice that their hair is thinner, brittle and oily.Īndrogens are male sex hormones. ![]() Clinically, doctors have observed that certain hair texture and volume changes are commonly associated with thyroid abnormalities like hypothyroidism and hyperthyroidism. Thyroxine and Triiodothyronine are hormones produced by your thyroid gland. Skin texture can change, the ability to put on or lose weight might not be the same and, sometimes, hormonal changes can literally curl (or straighten) your hair! The Hair-Do Hormones:Īt times of great hormonal shifts, like puberty, pregnancy and menopause, many strange things can happen to the human body. The flat ribbon is better suited to being shaped into a curl, while the round string likely won’t be as malleable. Think of wrapping a present with round string versus a flat ribbon. If the follicle is flat and thinner, the cysteines are better able to bond together and pull your strands into ringlets. If a hair follicle is thick and round, particular amino acids, called cysteines, are less likely to gather close enough to form tight bonds, so the strand is more likely to be straight. Depending on how the amino acids bond, the bonds increase the chance that the hair will bend. A hair strand is made up of a protein called keratin which is made up of amino acids. Genes play a definite role in determining the shape of a hair follicle, but many things can affect how hair will grow. The phenomenon has made me curious-what exactly is happening when hair changes texture? Is the shape of the hair follicle changing? Are hormones somehow responsible? Could a perm last forever? Who Does Your Hair: I have also heard that pregnant and menopausal women can experience drastic changes to hair texture and volume. Some people claim that they got a perm that really was permanent, while others found that after chemotherapy, they had a different head of hair. Many people recall having perfectly straight hair throughout their childhood, until their teens when it all got unruly. Since then, I’ve learned to embrace my naturally fluffy bouffant and I’ve heard from many now-grown-ups that I am not alone in my hair-raising experience. I have allowed no photos to exist that could document this time in my life, so you'll have to use your imagination. I can assure you, it was no one’s idea of a good hair style. My only reprieve was that it was the early 90’s and big hair was in fashion, so I tried my best to make it look intentional. ![]() Now, curly hair is clearly not a bad thing, but in my case, the curl began at the root while the length was still flat. When I was about twelve years old, I was dismayed to find my, previously inoffensive, straight hair had transformed into curly hair.
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