Does hair thicken back up once you treat the thyroid?

[Jtk11]

My hair used to be very thick and wavy, now it's straight and really thin. Will it thicken once I get my thyroid levels treated?

[Lora7again]

Yes it will as long as there is nothing else going on like low ferritin or low vitamin D. I have had two lots of extreme hair loss (50%) and both times my hair grew back but it will take time. I had extremely thick curly hair over 12 years ago before I got thyroid disease. My hair has been growing back for over a year now but it isn't as thick as it once was because of having several years of losing hundreds of hairs a day.

Do you have any blood results to share with us? We need the TSH, T4 and T3. Also any vitamin levels you might have like B12, Iron and ferritin, vitamin D and folate. Just to add ferritin needs to be over 80 for hair growth.

I have just looked at your previous post and see your TSH is 6.62 can you add your results and ranges to your post please? I think your TSH is too high and your thyroid is struggling because usually it would be about 1. For example my husband who doesn't have thyroid disease has a TSH of 0.97.

[Cavapoochonowner]

Hi, I have graves disease which causes my thyroid to overact.The treatment I am on as caused me to go very underactive for a while until they manage to balance my medication.One of the symptoms l had was that I was losing loads of hair both when I washed or combed it.Also my curly hair was sort of flat and lifeless and felt horrible like a brillo pad.When they managed to get my levels stabilised my hair started to improve.It has gone back to how it used to be.Of course it takes a bit of time.I also used to dye my hair which I don't think helped.I have cut it a bit shorter and stopped dyeing it and it has come back a treat.Hope this gives you encouragement as I know how important it is to feel that your hair looks nice.

[bantam12]

In my experience no it won't, there are 7 of us in my family with thyroid problems and none of us have the hair we once had.