Medical astrology is actually an ancient science that predates both psychology and astronomy.

This ancient medical system associates various parts of the body, diseases, and drugs as under the influence of the sun, moon, and planets along with the twelve astrological signs.

It's been used for thousands of years dating back as far as 410 BC and traced to locations across the globe including Egypt and Mexico.  

It's popularity has waxed and weaned over the centuries but it has always managed to keep a presence.  As a scientist by nature, I always try to keep an open mind to all types of modalities and entertain the validity while waiting for more evidence-based research to come about.

Isn't is interesting that women have shown peak rates conception and probably ovulation appear to occur at the full moon or the day before.  

During the new moon, ovulation and conception rates are decreased overall, and an increased number of women start their menstrual bleeding.

Scientific research has documented that the moon rules the flow of fluids (ocean tides as well as individual body fluids) and affects the unconscious mind and dreams.

The timing of the menstrual cycle, the fertility cycle, and labor also follows the moon-dominated tides of the ocean.

Environmental cues such as light, the moon, and the tides play a documented role in regulating women’s menstrual cycles and fertility (source).  

Maybe in our technology dominated culture we are beginning to forget how connected we are to universal forces?

Astrological sign and organ affinity:

• Aries - head, face, brain, eyes

• Taurus - throat, neck, thyroid gland, vocal tract

• Gemini - arms, lungs, shoulders, hands, nervous system, brain

• Cancer - chest, breasts, stomach, alimentary canal

• Leo - heart, chest, spine, spinal column, upper back

• Virgo - digestive system, intestines, spleen, nervous system

• Libra - kidneys, skin, lumbar region, buttocks

• Scorpio - reproductive system, sexual organs, bowels, excretory system

• Sagittarius - hips, thighs, liver, sciatic nerve

• Capricorn - knees, joints, skeletal system

• Aquarius - ankles, calves, circulatory system

• Pisces - feet, toes, lymphatic system, adipose tissue

The planets are also associated with certain portions and functions within the body:

• Sun - heart, spine, and general vitality

• Moon - stomach, digestive system, female organs, lymphatic system

• Mercury - brain, central nervous system, thyroid gland, five senses, hands

• Venus - throat, kidneys, thymus gland, sense of touch, ovaries

• Mars - muscles, head, adrenal glands, senses of smell and taste

• Jupiter - liver, thighs, feet, growth, pituitary gland

• Saturn - skin, hair, teeth, bones, the body's defenses, spleen

• Uranus - parathyroid gland, neural activity, aura

• Neptune - pineal gland, psychic healing

• Pluto - pancreas, metabolism, elimination

Common imbalances associated with each astrological sign:

Aries: The energies are often in excess of the nervous and mental balance, and most ill-health has its origins in such things as violent exertion and outbursts of anger. The Aries person should seek poise at all costs.

Taurus : Over-indulgence and too much comfort lie at the roots of most disorders, but there is also a tendency to brood over troubles which lends force to any passing ailments.

Gemini : Nervous reactions and restlessness, form the basis.

Cancer : Usually complaints originate in the emotions through some mental irritant, cause nervous reactions and general lessening of vitality. It has been said that nine times out of ten the Cancerian is hurt in health more by others than by himself.

Leo : Nearly all afflictions tend to arise from over-exertion of some kind.

Virgo : There is a tendency to upsets of the digestive organs from nervous causes, producing acidity and other troubles.

Libra : Troubles arise usually from nervous exhaustion of some kind.

Scorpio : Breaking down of the resistance through worrying and interaction of others upon the individual.

Sagittarius : Restlessness often causes the trouble; the folks under this Sign are peculiar to accidents and injuries.

Capricorn : Disease is frequently rooted in inhibitions.

Aquarius : Nervous causes, usually, based on the highly sensitive nature.

Pisces : Over-heating of the mind with possibly fancied injuries from others, plus much sensitiveness physical and mental, form the basis for most complaints.