Menopause is a big cause of hair loss. My favorite remedy is Nioxin. I've seen it work to stop hair loss and to get sluggish hair follicles to grow hair againn.
You have to use all three parts (it's easy and quick) and keep it up, at least until you are through menopause.
This article is about Bodybuilding but at the bottom, I talk about Nioxin. so if you haven't heard of it, you can read about it there. Just scroll down.
Hair Loss