Medicine occupies a significant position in astrology. The idea of medical astrology is founded on the belief in "the supposed influence of the heavenly bodies on human affairs, and especially upon the states of health and disease of the human body." Besides observing the planets simply to foretell the future, astrologers and physicians had kept an eye on them for the right time to perform medical treatment. The use of astrological data became recognized as something essential for the healing of physicians in the late medieval western Europe. However, it is difficult to distinguish whether it was based on the association of medicine with astrology, or astrology with medicine.

In a modern sense, this association has been evaluated as nothing more than a supplementation and degradation of the art of medicine. The present paper about medieval astrology, particularly in medicine, is focused on different questions. The widespread use of astrology in medicine was did [sic] not just emerge in the Middle Ages. Rather it was the product of traditions continued from ancient times, but mixed with the Christian culture. The most important characteristics of medieval medical astrology did not come from what was newly created, but from its interrelationship with medieval people and their Catholic culture. Thus, the questions are raised in respect of this. What was the intellectual or cultural background of medieval medical astrology? How was this peudo-scientific art conceived by the medieval people? How was it defended under Christianity? and [sic] how had it blended with Roman Catholic traditions? These questions will be explored in medieval social and intellectual context in the paper.