An imbalance of Nat Phos in the body results in: gout, rheumatism, biliousness, nausea, jaundice. Tissue salts were introduced by homeopath and chemist Dr. William Heinrich Schuessler in 1973. He believed disease is caused by a lack of mineral salts in the tissue cells of the body and maintained that when we give these salts to the body, it is able to fight off disease. Tissue salts are necessary for harmonious body functions; for rebuilding and detoxifying cells. They also improve the absorption rate of important nutrients from food.