I read a little book, by Earl L Mindell, called the the Miracle of MSM, about 40 pages. So I started taking 10,000 mgs of MSM for my sore joints. Within two weeks the pain was gone, my nails grew long and so strong. I colored by hair about two week ago and now you can see the new growth. But what is really amazing is that my fiancee told me that he noticed that I don't snore any more. I am sleeping through the night instead of waking up because of sleep apnea. This stuff is amazing.