Having knee pain walking up and down stairs (going UP is worse), or using knees to get myself on/off or up/down anything. I'm 49 years old. My GP found out that I was extremely low in Vitamin D and put me on a high prescripton dose of Vitamin D or 3 months (in 2007), and then supplements afterward. I had also been having problems with my elbows at the time. After about 6 months I could notice a big change in my elbows. It was wonderful not to have that daily pain in my elbows. I only have minor discomfort now when lifting groceries or carrying a bucket of water. At least it doesn't last for days, like it did before. However, it hasn't really done anything for my knees. Or if it has, my knees would be 10 times worse than they are now ... and considering how my knees are feeling with the Vitamin D, I can only imagine how bad it would be without it!!! Last year I saw a neurologist and rheumatologist (spelling?) for my knees, and I don't have arthritis or fibromayalgia (spelling?). I've never been an athlete, or jogger, or had any injuries. No repetitive motions. There is nothing that would explain why I should be having this pain. The company I work for just had some people come in to give us our annual checkups - for insurance purposes. I passed with flying colors. All my numbers are in the normal range -- weight, sugar, cholesterol, blood pressure,BMI, etc. Any suggestions???