A system of medical astrology was recorded by Culpeper in his “Complete Physician”. Astrologers believe diseases vary according to movements of the stars and that in some unknown way plants are related to the heavenly bodies. Culpeper writes: “It is essential to find out what planet caused the disease and then by what planet the affected part of the body is governed.” A remedy of a contrary nature is applied: for instance, if a disease is caused by Venus, herbs under Mars are used; if under the Sun, herbs under Saturn.
In some instances a planet cures by acting in sympathy, each planet curing its own disease; i.e. Venus and diseases of the reproductive system.
It is an ancient herbal practise for herbs to be gathered when the ruling planet is in the ascendancy. Scientific inquiry fails to support this system of medical treatment.
Health Encyclopedia