Astrology established that each of the twelve zodiac signs rules a certain area of the body, therefore influencing certain organs in those individual born under that zodiac sign. The regions of the body were assigned from the head to the toes in the order of the signs: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.

Knowing which body parts each zodiac signs influence has two basic significances: One refers to the fact that the areas ruled by a zodiac sign represent also the weak points of the individuals belonging to that sign and reveals where they should take caution.

The other significance refers to the influence of each of the zodiac signs when the Moon is in them. For instance, Aries rules the upper side of the body, e.g the head. Therefore when the Moon is in Aries, the astral influence says that migraines and other brain affections have a higher change to occur. These are the basic examples of the body parts ruled by each zodiac sign.

The Aries zodiac sign rules the head, eyes, ears and circulatory system of the head and shoulders.

The Gemini zodiac sign rules the shoulders, arms, hands and lungs.

The Taurus zodiac signs rules the area of the mouth, neck, throat.

The Cancer zodiac sign rules the breasts, chest muscles, stomach and pancreas.

The Leo zodiac sign rules the heart, back and spine.

The Virgo zodiac sign rules the abdomen, intestines, liver and corresponding arteries.

The Libra zodiac sign rules the kidneys and adrenal glands.

The Scorpio zodiac sign rules the genital organs, bladder and associated arteries.

The Sagittarius zodiac sign rules liver, hips and upper part of the leg.

The Capricorn zodiac sign rules the bones, joints and the lower limbs.

The Aquarius zodiac sign rules the blood circulation and lower limbs.

The Pisces zodiac sign rules the blood circulation, muscles of the legs and feet.