If you've lived with arthritis for long enough, you've likely been told about "the gel shot" or "the rooster shot" or "the natural shot." What all of these are talking about is an injection of hyaluronic acid (HA). What is hyaluronic acid? Sounds like something a dermatologist might market (and some do as skin creams), but for our purposes here it's a viscous substance that is made up of glycosaminoglycans (GAGs) to be technical. What these GAGs do are essentially act as