Health-related problems also can be caused by certain stars and planets. The branch of astrology that deals with diseases, medical problems and Sexual Problems in medical astrology. Medical Astrology is an ancient science that deals with the body, diseases and drugs. It is through the influence of the sun, moon and planets and the twelve astrological signs. Each of the astrological signs, along with the sun, moon and planets, is associated with different parts of the human body. The underlying basis for medical astrology is considered a pseudoscience.