Hobbies Astrology The Zodiac as It Relates to the Body Share PINTEREST Email Print Smith Collection/Gado / Getty Images Hobbies Basics 12 Signs of the Zodiac The Sun & Sun Signs The Moon & Moon Signs The Houses Love & Compatibility By Molly Hall Molly Hall Molly Hall is an astrologer, tarot reader, and author of "Astrology: A Complete Illustrated Guide to the Zodiac." Learn about our Editorial Process Updated on 06/22/18 Medical astrology, or iatromathematics as it was called in ancient Greece, is an ancient medical system that associates various parts of the body and diseases with the 12 astrological signs of the zodiac and other celestial bodies. One of the earliest written references that gave descriptions of the birth signs and related body parts dates back to Marcus Manilius' "Astronomica" in the first century A.D. Aries Aries rules the head, including the face, brain, and eyes. Aries is prone to migraines, head injuries and sinus pressure. For an Aries, a head massage is pure heaven. Taurus Taurus rules the throat, including the neck, thyroid gland, and vocal tract. Taureans often have a long or thick neck, or their neck is a stand out feature. Taureans tend to have sweet sounding voices or a musical inclination. Gemini Gemini rules the nervous system, which includes the shoulders, lungs, arms, hands, and fingers. Gemini as "the twins," demonstrates the duality of these body parts, two of each, split right down the middle. Gemini is prone to carpal tunnel syndrome, anxiety, nervous or fidgety problems, smoking-related illnesses, and breathing issues. Cancer Cancer rules the chest, including the breasts and stomach. Cancer can have digestion problems and struggles with weight. Those born under Cancer can have a large bust, for both men and women. In the case of men, the men might exhibit nicely defined pectoral muscles. Leo Leo rules the heart, spine, spinal column and upper back. Leos are known to be warmhearted or lionhearted. They have a strong backbone and are known to be brave. If Leo does not follow passion and know joy, there can be heart disease. Virgo Virgo rules the digestive system, which includes the intestines, and spleen. These people have an instinctive intuition about their well being, such as a gut instinct or gut feeling, and as such, are the most health conscious of the signs. Libra Libra rules the kidneys, skin, lumbar region, endocrine system, and buttocks. If you are born under this sign, you might have particularly good skin and a keen sense of balance and support. Scorpio Scorpio rules the reproductive system, sex organs, bowels, and excretory system. If you are born under this sign, you may have a higher sex drive than most. Sagittarius Sagittarius rules the thighs, hips, liver, pituitary gland, and sciatic nerve. Sagittarians usually has beautiful legs. If Sagittarius does a little working out, they can be toned and gorgeous. Capricorn Capricorn rules the knees, joints, skeletal system, and teeth. Capricorns might like to crunch their way through foods or have something distinctive about their teeth. They usually have fine skeletal or bone structure. They should beware of injury to their bones, especially the knees. Aquarius Aquarius rules the ankles, calves, shins, and circulatory system. Aquarians may experience troublesome Achilles heels. Their legs are usually well defined and particularly attractive. Pisces Pisces rules the feet, toes, lymphatic system, and body fat. Pisceans may have a fleshy appearance, particularly in the face. If you were born under Pisces you most likely love foot massages. No matter how much you love your feet, they sometimes might get the best of you and trip you up.