I have the same problems, although I am a bit older. I have noticed a big improvement in my nails in the last few months since the doctor has upped the vitamin D. (Covid protection).
However, I still have a big problem with hair thinning. I do have a thyroid check every year which seems to be correct. I would eat a few almonds every day but it would mean I would eat a whole packet at once because I have no control, which would lead to a weight increase.
I will look up Biotin and Nourkin which are expensive in France but maybe I can get them on H&B’s special buy one get one .... when I can visit next time.
SNP and Greens end coalition deal
Scottish political mess. Is Devolution working?