Large Intestine

The large intestine reabsorbs water and forms and expels what remains after digestion. Western tradition places the lower bowel under Scorpio, the sign of elimination, with the intestines generally under Virgo. In Chinese medicine the large intestine, da chang, is the fu paired with the lung and belongs to the metal phase, and its function is stated as the passing on and transformation of waste. The lung and large intestine pairing, like the heart and small intestine pairing, follows the five-phase scheme rather than anatomy, and it has practical consequences in clinical practice, where disorders of the bowel are routinely treated through the lung channel and vice versa. It is worth repeating that these correspondences belong to a systematic theory with its own internal logic, and that they are not claims about anatomy in the modern sense.

Ayurveda places the large intestine, like the kidneys and bladder, under Apana Vata, and treats the colon as the seat of vata dosha generally, meaning Ayurvedic practitioners read chronic disorders of many kinds back to an imbalance originating in this organ, a diagnostic emphasis with no real counterpart in the western or Chinese schemes recorded above. Egyptian mummification again offers a concrete historical parallel: the intestines were among the organs removed and preserved separately in the canopic jars, placed under the protection of Qebehsenuef, the falcon-headed son of Horus, and of the goddess Selket, the same protective figure recorded elsewhere in this atlas as the guardian associated with the scorpion.

Sources Christian AstrologyWilliam Lilly with The Roots of Ayurveda: Selections from Sanskrit Medical WritingsDominik Wujastyk

The Large Intestine is one of the six fu and the yang partner of the Lung in the Metal phase. That pairing is the least obvious of the six to a modern reader, and the tradition's reasoning for it is structural rather than functional: the two channels connect at the hand, they share the phase, and the classics describe both organs as concerned with letting go, one of air and one of solid waste. Later writers extend the parallel to grief, the emotion assigned to the Metal phase, and to the difficulty of releasing what is finished.

The function itself is described briefly and without much elaboration. The Large Intestine receives what the Small Intestine has rejected, reabsorbs the fluid from it and passes on the residue. It is one of the plainer entries in the scheme.

Its channel, by contrast, is among the most used in practice and carries Hegu, the single most needled point in the world, which the classical literature associates with the face and head rather than with the bowel. That mismatch between an organ's modest description and its channel's prominence is common in this system and is treated on the Meridian page.

The western scheme places the large intestine under Scorpio and Virgo in different sources. Neither tradition's account is asserted here as physiology, and nothing in this entry is guidance.