The Spleen and Stomach in Korean Medicine: The Root of Qi and Blood

After the lung, the organ series reaches the digestive core: the spleen and stomach. In Korean Traditional Medicine (KTM), the traditional healing system of Korea also known as Hanbang (한방), the spleen (脾) is understood to span what modern medicine calls the spleen and the pancreas. Together with the stomach it digests food, draws out its essence, and — crucially — makes the Qi and Blood the rest of the body lives on. That last point is why KTM treats the spleen-stomach as the most fundamental organ system of all.

The Digestive Core: Raising and Lowering

The spleen, stomach, and intestines together are the organs that digest and absorb food, carry its essence (水穀精微) to the whole body, and excrete what is left. Their work has a characteristic shape: the spleen raises, and the stomach and intestines lower. The spleen lifts the clear essence of food upward; the stomach and intestines send the turbid remainder downward. These two directions are not independent — rising and lowering cause and enable each other, and between them they move the essence onward and push the waste out.

The sorting of clear from turbid is the work of the spleen and the small intestine. Of the food the stomach takes in, what is not absorbed and passes down to the small intestine becomes the turbid part (濁氣); the relatively clear part — the nutrients the spleen-stomach absorbs, the food essence — becomes the clear part (淸氣) and is raised by the spleen. The image is simple: the turbid is heavy and sinks, the clear is light and can rise.

The Stomach: Receiving and Ripening

The stomach’s role is to receive and to ripen. It receives food, and it “ripens” it — turning it to a thick mush — before sending the once-absorbed remainder down to the small intestine. For this it is called the great granary (太倉), the sea of food, the sea of food-Qi-and-Blood. The reasoning behind a striking title follows: the substances every organ needs to work are Qi and Blood; Qi and Blood come from the food the stomach takes in; therefore the stomach is the root of the five Zang.

The Spleen: Transforming, Raising, and Governing the Blood

KTM weights the spleen’s role in digestion above the stomach’s. The stomach is, in character, a food store — a holding bag; the spleen is the organ that absorbs nutrients from the stomach and intestines and sends them into circulation. (That the spleen is functional where Western anatomy looks for a structure is simply the difference between a medicine that emphasizes function and one that emphasizes form — both are right and both are needed.) The spleen has three offices:

• Transformation and transport (運化): the spleen extracts the food essence and carries it through the body. Food, being material, tends to sink; the spleen is what raises it instead, sending it up to the heart and lung and to the face.
• Raising the clear (升清): that upward lift of the clear essence is named in its own right, because so much depends on it.
• Governing the blood (統血): through its transforming work the spleen makes Blood from food, and because it makes and manages Blood it also keeps Blood flowing inside the vessels rather than leaking out.

Why the Spleen-Stomach Is the Root

The spleen and stomach are hard to summarize briefly precisely because they matter so much. The short version is this: the spleen-stomach makes Qi and Blood and sends them through the body, which makes it the most fundamental organ system for sustaining life. Where the kidney holds the deep inherited reserve, the spleen-stomach is the daily engine that replenishes Qi and Blood from food — the source the whole body draws on, meal after meal.

In Summary

The spleen and stomach are the digestive core of Korean medicine and, because they manufacture Qi and Blood, its most fundamental organs. They work as a raising-and-lowering pair — the spleen lifting the clear essence up, the stomach and intestines sending the turbid down. The stomach receives and ripens food and is the root of the five Zang; the spleen transforms and transports, raises the clear, and governs the Blood. Hold this, and it is clear why so much of KTM comes back to protecting the spleen-stomach. The organ series continues from here.

Related reading: The Organs in Korean Medicine · Blood in Korean Medicine

This article reflects the clinical observations and teaching practice of Professor Seungho Baek, Professor of Korean Medicine at Dongguk University College of Korean Medicine, specializing in Pathology and Oncology.