The Body Watch

Could This Be The No.1 Reason For Hair-Loss?

There are many reasons why a person might end up losing their hair. From genetics to certain scalp conditions, the triggers are varied and different, but hair loss can also be caused by a bigger problem.

Although you might not realize it, your thyroid could very well be the reason for your thinning hair. There are a couple of ways this can happen, and the connection between your hair and thyroid is an interesting and intricate one.

Read on to discover how the two are linked, and how your thyroid might just be causing problems for your hair.

You can also take a free hair-loss quiz here to find out more about other triggers.


The Thyroid

Your thyroid is found in your neck, and is a gland is shaped kind of a like a butterfly. Its job is incredibly important – to release hormones, such as thyroxine, into your bloodstream.

The thyroid has a vital part to play in keeping your body functioning at its peak. It keeps your metabolism in check, and makes sure that your central nervous system is working as it should.

If your thyroid malfunctions, the effects are not limited to your hair. In fact, you will start to experience a wide range of symptoms all over your body. But with regards to your hair, a malfunctioning thyroid results in your body not metabolizing food as it should, so your hair follicles can cease to function – sometimes shutting down completely.

This usually means that you will start to lose hair, and will experience thinning hair on your head. The first you will know of it is probably when you notice more hair than usual on your pillow, or in your hair brush.


How Thyroid Problems Affect Your Hair

The hair on your head has a growth cycle, and goes through periods where it grows and rests. Right now, a large majority of your hair is growing, while the remainder is in the ‘resting’ phase. That is unless something has interrupted that cycle, in which case it will be the other way around – which means hair loss will be occurring.

Thyroid problems are one of the triggers of hair loss, and there are two common types – hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid). Hair growth is inextricably linked to proper functioning of the thyroid, so whenever it produces too much or too little hormone, your hair can suffer.

If your thyroid is overactive, the result is thinning hair, whereas an underactive thyroid will cause hair loss all over your body, not just on your head.

There are other conditions that can affect your thyroid and hair. One of these is thyroiditis, which is a bacterial infection of the thyroid gland. This interferes with hormone production, and your hair subsequently suffers.

There is also post-partum thyroiditis, which is caused by the many hormonal changes women experience during pregnancy.

One of the most serious conditions is myxedema, which occurs when the thyroid is both over- and underactive. Balding can be a sign of this, but it can easily lead to more life-threatening ailments, such as kidney failure.


Symptoms of Thyroid Disorders

Thyroid problems can cause a wide range of symptoms, in addition to thinning hair. These can sometimes be very subtle and hard to spot, however, so you need to be aware of them.

If you’re suffering from thyroid issues, you might also experience abnormal changes in your mood, such as anxiety or increased nervousness. You might also become incredibly sensitive to temperatures, both hot and cold.

You might experience insomnia, or sleep too much. Your weight may fluctuate as well, going either up or down, even though you haven’t changed your eating or exercise habits.

Pain or weakness in your muscles in common, as is dry hair and skin. Paying attention might become harder, as will remembering, or even just concentrating.



The good thing is that thyroid problems are treatable, as is the hair loss that comes with it. You can be diagnosed with a simple blood test, so if you experience any of the symptoms above, you might want to consult your doctor.

It is important to remember, however, that while thyroid problems are a hair loss trigger, they are not the only one. In fact, there are quite a few, and if you are experiencing hair loss, one of the most important things to discover is why.

If you would like to find out more, we have a free quiz for you to take here.