I tend to have terrible nails, and, yes, it can be caused by low thyroid. I take biotin supplementation, and it seems to help.

Well I definitely have the same problem. I find that never using any kind of nail polish is very helpful, along with making sure you get gelatin in your diet. I know what you're thinking...jell-o is gross. Well, you're absolutely right. But, I ate a cup of jell-o with lunch and dinner for a few months and not only did my nails grow and stop splitting for the first time in my life, I actually grew new, thicker hair. It looked like I had bangs. It was well worth the wild berry grossness. Hope this helps!!

Ok, so no nail polish? And what is biotin? I've heard about the jello thing. And, being brought up on Lutheran basment pot-luck suppers, I actually don't mind jello at all. What would a pot-luck be without red jello?

biotin is a mineral supplement you can pick up at a health food store, or in the vitamin aisle.

I agree with the Jello! It really does help. My nails are horribly brittle and peeling all the time (my toenails too!). There is one kind of polish by OPI called Nail Envy. It works too.

I'm getting into the "natural" market for everything I used to buy conventionally and I was wondering if anyone had ever tried the natural nail polishes.

Hi Meow,
I have Hashimotos and brittle nails are definitely a symptom of it. The doc put me on prenatal vitamins because my hair and nails were so bad. They seemed to help a lot. Good Luck!