Thyroid and Hair Loss
Thyroid problems are one of the first things doctors check when a woman's hair starts thinning all over. Here's what thyroid-related hair loss usually looks like and what to expect once it's treated.
What it looks like
Thyroid-related hair loss is usually diffuse, meaning hair thins evenly across the whole scalp rather than in patches, according to the British Thyroid Foundation. Some people also lose hair from their eyebrows. It's mainly linked to a thyroid that has been significantly over- or underactive for a while; mild or short-lived problems rarely cause it.
Why it shows up later
Because hair grows in long cycles, thinning often appears several months after the thyroid problem starts. That's why it can seem to begin right after you start treatment, when it's really delayed fallout from the condition itself.
Does it grow back?
Usually, yes. Regrowth typically follows successful treatment, though it can take several months and the new hair may have a different texture at first.
Patchy hair loss is different
Round, smooth patches of hair loss can be alopecia areata, which is more common in people with autoimmune thyroid disease. See a dermatologist if you notice patches.
The biotin catch
High-dose biotin, found in many hair supplements, can distort thyroid blood tests. Firmora contains 3,000 mcg of biotin. Tell your doctor you take biotin before any blood work, and follow their advice on pausing it beforehand.
If you have a thyroid condition
Firmora contains iodine, kelp and ashwagandha, which can affect thyroid function. Please talk to your doctor before taking it. If your thyroid is being treated and you're looking for extra support for your hair, your doctor can tell you whether Firmora Women's Daily Supplement is a good fit.
Questions women ask
Can hypothyroidism cause hair loss?
Yes. A significantly underactive thyroid can cause diffuse thinning across the scalp, and sometimes the outer eyebrows.
How long until hair grows back after thyroid treatment?
Usually several months once levels are stable. Hair grows in cycles, so give it time.
Should I get my thyroid checked for hair loss?
It's one of the most common checks for diffuse thinning. Ask your doctor, and mention any biotin you take.
This article is for general information and isn't medical advice. Firmora is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease. If you're worried about hair loss, see a doctor or dermatologist.