John discusses, with examples, the three main approaches to medical astrology. 1) Analysis of weaknesses and propensities as shown in the natal chart. 2) The use of horary for diagnosis and prognosis of specific ailments. 3) The decumbiture chart and the chart of 16 houses: another approach to the treatment of specific ailments. He will also outline of the traditional medical model, with emphasis on the inescapably holistic approach of astrological medicine, give an overview of methods of treatment, and consider that notable astrologer physician, Nicholas Culpeper.