The thyroid is an endocrine gland located in the neck, just below the larynx (Adam’s apple), responsible for the secretion of two hormones: thyroxine (T4) and triiodothyronine (T3). These hormones are responsible for regulating the metabolic rate, the rate of development of our cells, and other critical functions such as the heart, digestion, brain development, or mood. Since these hormones promote cell development, the natural cycle of our hair follicles also depends on the proper functioning of the thyroid. Read on to find out how thyroid hormones can affect our hair.
Hypothyroidism And Hair Loss
Hypothyroidism is a condition in which the thyroid does not make enough TH3 and TH4 hormones. Which also affects hair growth.
Symptoms of hypothyroidism are fatigue, weight gain, muscle pain and weakness, dry scaly skin, depression, and irregularities in the menstrual cycle. Since these symptoms are symptoms of other illnesses as well, they can be confused and therefore not treated in time.
Another symptom of hypothyroidism is hair loss and brittle hair.
The hormones produced by the thyroid play a role in the hair growth cycle and in its three stages: growth, rest, and loss. All hair follicles are not at the same stage of the cycle: most of them are in the growth phase, others in the resting phase. Thus, when the thyroid does not produce enough TH3 and TH4, more follicles are found in the resting phase, resulting in visible hair loss. However, this loss will manifest itself all over the scalp and not just a few areas.
Depending on the severity of hypothyroidism, hair loss can occur all over the body. One of the obvious signs is hair loss in the tail of the eyebrows. Thyroid disease-related hair loss may be more noticeable several months after the onset of the disease, due to the length of the hair cycle.
Hyperthyroidism And Hair Loss
Hyperthyroidism is a condition that describes an overactive thyroid, where the production of the hormones TH3 and TH4 is excessive. This causes a wide spectrum of symptoms such as nervousness, anxiety and irritability, weight loss, swelling of the neck, palpitations, and hair loss.
Unlike hair loss caused by hypothyroidism, when you have an overactive thyroid, your hair becomes thinner or falls out in clumps. Hair loss is not seen all over the body but usually in the head. The hair can also become very soft and thin.
The Link Between Thyroid Disease And Alopecia
It is common for people with hypothyroidism or hyperthyroidism to also have an autoimmune thyroid condition. This can make you more prone to the development of other autoimmune diseases such as alopecia Areata, a form of alopecia.
This disease occurs when the immune system attacks the hair follicles and results, not in fine hair and general hair loss, but in clumps of hair loss.
Is Hair Loss Caused By Thyroid Problems Reversible?
If you are concerned about hair loss, we recommend that you consult your doctor. They will help you take the necessary tests to determine the cause of the problem.
If the hair loss is related to a thyroid problem, the hair will eventually grow back in most cases, provided treatment is taken. However, it may take several months. We advise you, to better combat hair loss, to modify your diet with foods that are good for the hair, to find a hairstyle suitable for fine hair, and to avoid exerting pressure on your hair by styling it, braiding them, or using chemical treatments.
During this period, you can also use Nioxin anti-hair loss products, such as System 3D kits, designed to treat fine hair and scalp, thus providing the hair with greater resistance to breakage. The kits contain shampoo, conditioner, and scalp and hair care.