In 1950, a chiropractor from America named Bernard Jensen began teaching students about the necessity of using natural foods to detoxify the body. He developed a method by which the color of the iris was used to indicate the presence of different toxins. American iridology was born. However, iridology, or the study of disease using the color of the iris and certain color and thickness of lines across the eyeball originated in Europe, when a physician from Hungary and a Swe...