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Can A Thyroid Dysfunction Cause Hair Loss? What Are The Symptoms And Signs?

There are many factors that contribute towards hair loss: hormonal changes, diet and nutritional deficiency, stress and poor health. A major cause of severe hair loss is developing a thyroid problem. Both hypothyroidism and hyperthyroidism are responsible for causing severe early onset of hair loss in both men and women of all ages. Everyone seems to believe that these problems will never happen to them and that a thyroid dysfunction is something that happens to old people. This is far from the truth. We see male and female patients from all age groups. Ask your GP for a blood test immediately if you have a suspicion and consult one of our trichologists early on for advice. Early trichological treatment can prevent severe hair loss from this condition and its associated prescription drugs. Hair growth has a three phase growth cycle: anagen, catagen and telogen dormant phase. When a person suffers from hypothyroidism or hypothyroidism, the general mechanism of the hair growth process shuts down and loses balance. Thyroid malfunctions can force hair follicles to remain in the dormant phase for a longer period of time than normal. This leads to stalled hair growth and eventually to hair loss. 

The thyroid is an endocrine gland, which is located on both sides of the trachea. It secretes the thyroid hormone, known as thyroxin, which regulates the rate of the metabolism. Any disruption in the mechanism can have great impact on overall metabolic activities. Once the metabolism is disturbed, it has been found to cause a series of abnormalities, one major factor being hair loss. Hypothyroidism has often been seen in women. It is often characterized by problems such as lethargy, menstrual imbalance and deceleration of metabolic rate. All of these factors contribute to hair loss. On the other hand, highly excessive functional activities of the thyroid gland can also cause hair loss.

Hormonal dysfunction within the body has a massive effect on hair loss. Hair loss occurs when dihydrotestosterone (DHT) shrinks the hair follicles and eventually causes them to disappear completely. The problem of hypothyroidism and hyperthyroidism both encourage the conversion process of testosterone into DHT which accelerates hair loss in both men and women of all ages.

Hair loss induced by hormonal abnormalities is serious. This requires immediate action. We suggest that if you are in any doubt then simply feel free to call one of our trichologists for advice.

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This entry was posted on Tuesday, June 12th, 2007 at 10:59 am and is filed under HAIR LOSS SCIENCE. You can leave a response, or trackback from your own site.

10 Responses to “Can A Thyroid Dysfunction Cause Hair Loss? What Are The Symptoms And Signs?”

  1. Daniel Says:

    my doctor recommend me what should i do?

  2. Gary Says:

    Daniel the best thing to do in this instance is to ask your doctor what direct experience does he have with this product? Ask for numbers of patients and there comments and responses. Remember that a Saw Palmetto extract: reduces DHT formation and blocks the DHT receptor sites, this is a proven treatment, please look at Biostim on our website:

  3. Daniel Says:

    tnx Gary i’ll check it.

  4. shawn Says:

    i have been loosing hair for past years and i’m only 19! i’m eating all the food and taking levo-tyroid tab. 75mcg. what can help my hair get strong and won’t make me feel tired everyday?

  5. Gary Says:

    Hair is a very important part of our appearance; when we describe another person it is one of the first characteristics we use to do so. Losing one’s hair therefore can be extremely traumatic.

    However, if you are a sufferer you do not have to simply live with it as your parents and grandparents may have had to. The Hair Centre offers a range of new, highly effective hair loss stabilisers and hair growth stimulants.

    These topical stimulants are trichologically formulated especially for The Hair Centre by one of Europe’s leading chemists. They have undergone extensive clinical testing to ensure their effectiveness. All ingredients are of the highest standard and meticulously sourced to make sure that these products are the crème de la crème.

  6. Robyn Says:

    If the loss is from a thyroid problem, will the hair grow back? I have had a significant loss of hair for the past couple of months. I am suspecting a thyroid problem because both my sister and mother had thyroid problems. HELP!!

  7. Gary Says:

    Why not call 0207 976 6868 and speak to one of our Westminster Trichologists who will be happy to help and advise you.

  8. juliet Says:

    im 29 years old and i have a thyroid problem my hair is getting thinner and i have trouble in getting pregnant because of hormonal imbalance. i have a goiter and i take medications and my doctor told me that its alreeady gone. but id like to know why is my hair getting thinner my dermatologist gave me vitamins for hair but my hair wasnt thick and there are hair growing below my chin and in in the upper lip? can i be bald even if my goiter is gone? can i have my hair back when it was thick?

  9. Jamie Says:


    I have a history of thyroid issues in my family (hypo i think) and my hair and skin has always been very dry along with periods of cold hands and feet. I have mild to moderate diffuse thinning of my hair which appears as though it’s been affected by DHT for the last 5-6 years. I tried finpecia for 3 months with awful side affects. Hormonally I was all over the show with fatigue and general malaise. I stopped the medication on my doctors advice and then promptly had a very large shed of hair 6-9 months ago. For the most part it has not grown back.

    The good news is I have a trichology appointment next week and wondered what if anything I can ask that might shed some light on clues to a low thyroid function?


  10. wendy Says:

    I have thyroid issue(hypothyroid)my tsh level is 0.19,the telling me its with in normal range,my hair is thinning out and falls out when i shower its awfull,i been on med for almost 2 yrs.but the hair loss started 7 months ago everytime i go to the dr.he insist that its stress related am not sure what to do.


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