Hair - I had the hair problem before being diagnosed I lost significant amounts of hair, it has grown back but lost a lot of pigment color. AFTER I still lose more than normal hair even on meds but it's nothing that really causes concern.

Nails - BEFORE diagnosing I had nails & toenails like paper, extremely thin & sensitive.
AFTER medication they are very strong.

Weight - BEFORE - I would exercise intensely for 3 hours per day 7 days a week but still put on weight I was sick & exhausted.
AFTER - I still have an ongoing weight problem but I don't have to even exercise at all, my weight has stabilised, it's just losing the weight I gained & I am no longer exhausted. I can stay awake all day without any problems.

Mental Health - BEFORE - brain fog & poor brain function, it was so bad I couldn't remember where I'd been or what I had done an hour ago, let alone for the day. I couldn't function normally at all & I was very distressed & depressed.
AFTER - Took about 6 months for brain function to return to normality, no more depression & my memory isn't to bad, I'm still a bit forgetful.

Health - BEFORE - I always felt sick, it was constant, kind of like a mild morning sickness, I was always tired & exhausted I would fall asleep even stopped at traffic lights whilst driving, I couldn't sleep much at all seemed to have this insomnia even though I was exhausted, suffered regular heart palpitations, had virtually no immunity to anything always picking up colds, bugs etc. Felt constantly extremely cold even in the middle of summer I was still wearing a jumper.Tingling in my legs, Constant dizziness. Lost my eyebrows 7 have virtually no body hair at all.Extreme weight gain.
AFTER - I have rare sick mornings, still mildly tired but it's manageable, Insomnia is gone completely but still have interrupted sleeping patterns, no more palpitations or tingling. I still feel the cold but not to the previous extremes & I can wear shorts now in summer. No more dizziness. Immune system has improved. Eyebrows have grown back. Weight has stabilised but is still difficult to lose any weight.

Litlle Tip: start logging you food- My Fitness Pal - is awesome

Please note: I went undiagnosed for many years & was crtically ill. I feel like a new person now I am on armour medication.

My hair is not turning gray as fast as it used to. I'm on Armour. Still at a low starting dose but definitely noticing more energy and rising body temp so far. Best of luck!

I haven't been on medication in about three years (I know I will be when i go to my next appointment) but my hair started falling out about two months ago. I went for shoulder length to above the ears. I've been using organic biotin shampoo. My hair color is a whole other story. I've always had jet black hair. The last few months my hair, especially in the front has change to a copper redish brown color with gray around my edges. I'm afraid to color it because it seems to be so weak. I exercise to maintain my weight and sanity.