Which TCM organ is primarily linked with controlling body fluids?

In Traditional Chinese Medicine (TCM), the Spleen is predominantly responsible for the management and transportation of body fluids. This organ is seen as the primary player in the transformation and transportation of nutrients and fluids derived from food and drink. The Spleen's role is crucial because it extracts the essence and nutrients from what we ingest, which are then utilized by the body for various functions, including the maintenance of fluid balance.

When the Spleen is functioning optimally, it efficiently absorbs and distributes fluids throughout the body, preventing conditions such as dampness or fluid retention. Furthermore, the Spleen helps maintain the equilibrium of Qi and blood, indirectly influencing fluid dynamics. Conditions such as Spleen Qi deficiency can lead to complications like edema, indicating the Spleen's vital role in fluid control.

While the Kidneys also play a significant role in managing fluids, particularly in terms of their excretion and storage functions, they do not primarily control the distribution and transformation of these fluids to the same extent as the Spleen. Thus, in the context of body fluid regulation, the Spleen is the organ most directly associated with these processes.