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Kidney is one of the five main zang or whole organs in traditional Chinese medicine and is always mentioned together with its pair, the bladder. The kidney is responsible for growth, maturation and reproduction and is believed to be the source of essence given by your parents at conception.

The main physiological function of kidney is to store essence, regulate water, and produce source “Qi” for the rest of the body. Essence is the basis of all life processes and is transferred via (and ultimately responsible for) reproduction, giving kidneys the moniker the “pre-heaven” source. Kidney produces kidney qi, divides kidney qi into Yin and Yang, which supports, promotes and coordinates the structure and function of the whole body. So, kidney is also known as the "origin of five organs and Yin and Yang".


What is dark clings to what is light and so enhances the brightness of the latter. A luminous thing giving out light must have within itself something that preserves; otherwise it will in time burn itself out. Everything that gives light is dependent on something to which it clings, in order that it may continue to shine.

-The I Ching


The spleen transports the essence of water and grain drawn out by its pair organ the stomach and distributes it to the whole body. Supplying various needs, and maintains the normal life activities of the human body.

The main physiological function of the spleen is the main absorption and transportation of nourishment. Combined the spleen and stomach are the main organs of digestion, absorption and distribution of nourishment. After birth, any action including the energy production, build and repain tissue, and moisten with body fluids all depend on the essence of food and water transferred by the spleen and stomach. Because of this, the spleen and stomach are known as the “acquired origin” of the body.


In Traditional Chinese Medicine (TCM), Phlegm is one of the pathogenic (disease causing) factors responsible for the occurrence and development of a range of disorders. Phlegm is considered as a product from disharmony of body fluids that can produce either external, visible phlegm, such as sputum secreted by the respiratory tract, or internal, invisible phlegm.


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