I seem to remember that Andy says something in his book about mercury being a possible cause of sinusitis. Can't remember how exactly. However, I am also sensitive to sinus problems and my sinuses do get irritated during chelation. If you're developing full-blown sinusitis then there are a couple things you can do. First, megadose vitamin C. Second, try learning neti and get yourself a good pot with some sea salt. For extra benefit you can add a little colloidal silver to the pot. Neti has been a huge help for me and it helps you to feel alert too; it's actually a pre-yogic cleansing practice.

It also helps not to eat sugar, grains or dairy products, but if you're battling candida then you're probably avoiding those things anyway.

Hope this helps <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
Linda.