@I know this may not help everyone, but I discovered years ago that my lifelong aching legs were due to too little potassium. I now have a prescription for potassium that I take 3 x day and it has helped that problem. At the age of 82, I now have a Baker's Cyst in the back of my left knee (which also needs to be replaced) and have to use a cane for walking. Molly K