Located in the front of your neck is a small gland responsible for the production of thyroid hormones in your body. The hormones secreted by this butterfly-shaped organ helps control your body’s energy usage.
Without it, most of your body’s functions start to slow down – including the growth of your hair.This condition is called hypothyroidism, and it has been proven by studies to cause a particular kind of hair loss.
If you notice you’re losing a third of your eyebrow hairs (especially on the outer edges), you might want to consider getting a blood test to check your thyroid hormone levels.It is perfectly normal and healthy for everyone to have both male and female hormones at any given point.
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