The link between hair loss and thyroid disorders

Caspian Hartwell - 12 May, 2023

Understanding Thyroid Disorders and Hair Loss

Before diving into the link between hair loss and thyroid disorders, it's essential to understand what thyroid disorders are and how they affect our body. The thyroid is a small, butterfly-shaped gland located in the front of our neck. It plays a crucial role in regulating our metabolism and growth by producing hormones. When the thyroid is not functioning properly, it can lead to disorders such as hypothyroidism or hyperthyroidism. These conditions can have a significant impact on various aspects of our health, including hair growth.


Hair loss is a common issue faced by many people, and it can be caused by a variety of factors such as genetics, hormonal imbalances, stress, and nutritional deficiencies. However, in some cases, hair loss can also be a sign of an underlying thyroid disorder. In this article, we will explore the link between hair loss and thyroid disorders and provide insights on how to address this issue effectively.

The Impact of Hypothyroidism on Hair Loss

Hypothyroidism is a condition in which the thyroid gland does not produce enough hormones required for our body to function optimally. This hormonal imbalance can lead to various symptoms, including fatigue, weight gain, and hair loss. The hair loss experienced due to hypothyroidism is often characterized by thinning of the hair, dryness, and brittleness.


When the body does not receive enough thyroid hormones, it can disrupt the hair growth cycle, resulting in a higher percentage of hair follicles entering the resting phase (telogen) simultaneously. This leads to excessive hair shedding and, eventually, noticeable hair loss. Additionally, the lack of thyroid hormones can also cause changes in the texture and quality of the hair, making it more susceptible to breakage.

The Effects of Hyperthyroidism on Hair Loss

Hyperthyroidism, on the other hand, is a condition where the thyroid gland produces too much thyroid hormone. This can lead to symptoms such as weight loss, increased heart rate, and anxiety. Similar to hypothyroidism, hyperthyroidism can also result in hair loss. The imbalance of thyroid hormones can cause hair follicles to enter the resting phase prematurely, leading to hair shedding and thinning.


Moreover, the excessive production of thyroid hormones can also impact the overall health of the hair by causing it to become weak, brittle, and dry. This makes the hair more prone to breakage and can exacerbate hair loss.

Diagnosing and Treating Thyroid-Related Hair Loss

If you suspect that your hair loss might be related to a thyroid disorder, it's crucial to consult with a healthcare professional for a proper diagnosis. A doctor will typically perform blood tests to check your thyroid hormone levels and determine if you have hypothyroidism or hyperthyroidism. Once the diagnosis is confirmed, appropriate treatment can be initiated to help manage the symptoms and restore hormonal balance.


Treatment options for thyroid disorders usually involve medication to regulate thyroid hormone levels. For hypothyroidism, patients are often prescribed synthetic thyroid hormones, such as levothyroxine, to replace the insufficient hormones produced by the thyroid gland. On the other hand, hyperthyroidism is typically treated with medications that suppress the production of thyroid hormones, such as methimazole or propylthiouracil. In some cases, radioactive iodine therapy or surgery may be recommended to treat hyperthyroidism.

Addressing Hair Loss During Thyroid Disorder Treatment

While treating the underlying thyroid disorder is crucial for managing hair loss, there are additional steps that can be taken to promote hair growth and improve overall hair health. These include:

  • Maintaining a Balanced Diet: Eating a well-balanced diet rich in essential nutrients, such as vitamins, minerals, and proteins, can help support healthy hair growth. In particular, nutrients like biotin, zinc, and iron are vital for maintaining strong and healthy hair.

  • Managing Stress: Stress can exacerbate hair loss and impact overall well-being. Practicing relaxation techniques, such as deep breathing exercises, meditation, and yoga, can help reduce stress levels and promote better hair health.

  • Gentle Hair Care: Avoiding harsh chemical treatments and heat styling tools can help minimize hair damage and breakage. Opt for gentle hair care products and use a wide-toothed comb to detangle the hair gently.

  • Supplements: In some cases, your healthcare provider may recommend specific supplements to support hair health during thyroid disorder treatment. Always consult with a healthcare professional before starting any new supplement regimen.

It's important to be patient during the treatment process, as it may take several months for your hair to recover and return to its normal growth cycle. In the meantime, focus on maintaining a healthy lifestyle and taking care of your hair to promote optimal hair growth and overall well-being.

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