Are Thinning Eyelashes and Eyebrows Related to Thyroid Problems?

I keep noticing that people with thinning eyelashes and eyebrows keep mentioning thyroid problems. I take synthroid. Can this cause my problem? The lashes are also curling the opposite way that they should. Hoping for an answer. Thank you.

Thyroid disorders can affect hair growth. In particular, low function of thyroid can cause loss of hair in the eyebrows. Patients who suffer from hypothyroidism (decreased function of thyroid gland) may lose their eyebrow hair, especially the hair in the lateral one third of it. I am not aware that thyroid diseases or its medications can change the curling of the eyelashes. See a doctor to further evaluate this.