30 Thyroid Symptoms That Are Too Important to Ignore

28. Your Hair Is Changing
If your hair's been feeling different lately, it could be a sign of thyroid problems. With hypothyroidism, your hair might become drier and more brittle, and you may find yourself needing more frequent trims. It might also lose some of its luster, becoming dull and fragile. In some cases, people even notice they lose the outer third of their eyebrows.