SUN in Medical Astrology - Diseases by Zodiac Signs and Houses

 In Vedic medical astrology (Ayur-Jyotisha), the Sun (Surya) is the supreme karaka (significator) for vitality, the soul (Atma), and overall health. As the source of life force (Prana Shakti), it governs the heart, eyes, bones, spine, blood circulation, and immune system. An afflicted Sun—through weak placement, malefic aspects (e.g., from Saturn, Rahu, or Ketu), or combustion—can indicate chronic ailments, fevers, or vitality loss. Conversely, a strong Sun (exalted in Aries or in its own sign Leo) bestows robust health and resilience.

This synthesis of astrology and Ayurveda, as explored in texts like Brihat Parashara Hora Shastra and Charaka Samhita, helps predict predispositions to diseases. The Sun's position in signs and houses reveals specific vulnerabilities, but always consider the full chart, aspects, dasha periods, and Navamsa (D-9) for accuracy. Afflictions amplify risks, while benefics like Jupiter mitigate them.

As detailed in foundational works like Astrology Guide for Everyone: Basics & Principles of Jyotisha by Suripeddi Koundinya, understanding these placements empowers preventive remedies through mantras, gems (e.g., ruby for Sun), and lifestyle adjustments.

The Sun represents our vitality, immunity, and structural integrity. It is the "King" of the cabinet and governs the following:

• Primary Organs: The Heart and the Bones (Skeletal system).

• Sensory Organs: The Eyes (specifically the Right Eye in men, Left Eye in women).

• Physiological Processes: Circulation of blood, digestion (the "digestive fire" or Jatharagni), and the overall strength of the immune system.

• Mental State: Confidence and the "will to live."

Diseases of the Sun in 12 Zodiac Signs

The sign where the Sun is placed indicates the nature of the ailment and the body part most susceptible to "overheating" or depletion.

Zodiac Sign	Physical Vulnerability / Potential Diseases
Aries (Exalted)	High fevers, migraines, sunstroke, brain congestion, baldness.
Taurus	Throat infections, tonsillitis, polyps, cervical issues.
Gemini	Pleurisy, bronchitis, nervous exhaustion, shoulder injuries.
Cancer	Gastric ulcers, chest congestion, dropsy, weak digestion.
Leo (Own Sign)	Heart palpitations, spinal meningitis, back pain, aneurysms.
Virgo	Malabsorption, intestinal colic, constipation, digestive sluggishness.
Libra (Debilitated)	Kidney stones, Bright’s disease, skin eruptions, low vitality.
Scorpio	Hemorrhoids, bladder infections, reproductive issues, surgeries.
Sagittarius	Sciatica, hip fractures, arterial disorders, liver heat.
Capricorn	Rheumatism, skin diseases (eczema), weak knees, brittle bones.
Aquarius	Poor blood circulation, varicose veins, heart failure, calf cramps.
Pisces	Lymphatic issues, sensitivity to drugs/alcohol, foot deformities.

Diseases of the Sun in 12 Houses (from Ascendant)

The house placement indicates the area of life or the internal system where the Sun’s energy might be afflicted.

1. 1st House (Lagna): Headaches, eye problems, and fevers. If afflicted, it can lead to a weak constitution or "thin" hair/baldness.

2. 2nd House: Diseases of the mouth, teeth, and right eye. Speech-related tensions.

3. 3rd House: Ear ailments (Right ear), respiratory canals, and nervous twitching in hands.

4. 4th House: Chest pains, heart-related issues, and lung congestion.

5. 5th House: Stomach disorders, poor digestion, and issues with the "Upper Heart" or palpitations.

6. 6th House: Generally gives the strength to fight disease, but if weak, it leads to chronic kidney issues or digestive sensitivity.

7. 7th House: Urinary tract infections, low libido, or disorders related to the groin.

8. 8th House: Chronic fevers, sudden surgeries, and issues with the excretory organs.

9. 9th House: Weakness in the hips and thighs; issues with the marrow or arterial system.

10. 10th House: Joint pains, particularly in the knees; orthopedic issues.

11. 11th House: Problems with the legs, ankles, and potential hearing issues in the left ear.

12. 12th House: Weak eyesight (Left eye), insomnia, mental anxiety, and frequent hospitalizations due to low immunity.

When the Sun is debilitated (Libra), combust, or aspected by Malefics (Saturn, Rahu, Ketu), the individual usually suffers from a "lack of fire." This manifests as low immunity, coldness in the limbs, and a slow recovery rate from any illness.