Health astrology is the branch of astrology that deals primarily with health concerns. Health astrologers look at the individual's natal chart to determine which, if any, health issues one is likely to experience throughout the course of his/her life. Health astrology can foretell any impending incidents including accident, prolonged illness, diagnosis, and other negative symptoms. Also, health astrology by moon sign can easily forecast any bad health issues. The inauspicious positioning of planets sends a siren call for a serious illness.