Birch is a natural pain reliever containing salicylate, the compound found in aspirin. Salicylate relieves the inflammation and pain associated with osteoarthritis, rheumatoid arthritis, gout, and generalized muscle pain. Salicylate deters the body's production of certain prostaglandins that are linked to inflammation, pain, and fever among other things. An other reason birch calms arthritis and gout is it's cleansing diuretic action that eliminates toxins and excess water. Sweet birch can have good results against cellulite.