I had my legs collapse for years. No diagnosis, consulted many experts, tested for everything—I’m sure thousands of dollars billed to my insurance company. I researched extensively, tried a LOT of natural things. I finally figured out that my liver didn’t make enough glutathione. I took a lot of it, which helped, but it’s expensive. Now I take Milk Thistle (1-2 caps a day) plus eat dried apricots or peaches for copper (1-4 a day) and lots of greens (sometimes as spinach powder in my V8) some of which contain a bit of glutathione and all of which promote the liver making it more easily, and am a lot better. Read on the internet about Glutathione, or better, get a book on it. Doctors will likely never mention the word or know much about it, but it may be your answer to falling, even if you have another diagnosis. It’s natural and cannot hurt you (unless you were to take milk thistle in MASSIVE amounts or something stupid like that. If you’re worried about taking it, ask a doctor—they’ll look at you weird, but they’ll tell you it’s a natural substance and can't hurt you. It may not be your answer, but if it is, it will make you much less likely to fall, and help a lot of other things as well, since it is involved in a lot of bodily processes. Good luck!