Can Low Thyroid Cause Curly Hair?

Thyroid hormone levels can influence the texture and condition of hair, but whether low thyroid function specifically causes hair to become curly is not a typical or direct symptom of hypothyroidism (low thyroid function).

Thyroid hormones play a crucial role in regulating metabolism, growth, and development throughout the body, including hair follicles. Changes in thyroid hormone levels, particularly in hypothyroidism (low thyroid hormone levels), can lead to various hair-related issues such as:

  • Dryness: Hair might become dry, brittle, and prone to breakage due to decreased production of natural oils.
  • Thinning: Hypothyroidism can sometimes cause hair thinning, leading to reduced volume and density.
  • Changes in Texture: Some individuals may experience changes in hair texture, including dryness or coarseness.

Hair texture, including whether hair is curly or straight, is primarily determined by genetics. While thyroid hormone imbalances can affect the texture and condition of hair, it’s not common for low thyroid function alone to cause hair to become curly. However, individuals might notice changes in their hair’s appearance and texture as a result of thyroid imbalances.

If you’re experiencing significant changes in your hair texture along with other symptoms associated with thyroid issues, it’s advisable to consult a healthcare professional. They can perform necessary tests to assess thyroid function and provide appropriate guidance and treatment if an imbalance is detected.