According to TCM theory, prostate cancer is caused by heat, stasis or deficiency problems. Heat is considered a pernicious evil. Stasis or deficiency problems, which are described below in more detail, stem from a deficiency of vital energy (qi).

Stasis:
Stasis occurs when a particular substance cannot flow smoothly. In TCM, stasis happens when there is stagnation of qi or blood flow. The kidneys play an important part in the vaporization of body fluids. In this process, fluids are separated by the kidneys to ones that can be reused by the body or into "turbid water" which is eventually excreted as urine. When the emotion rage impairs liver function, the surrounding vital energy or qi stagnates and cannot flow properly, eventually transforming into an "evil-fire." As the "evil fire" accumulates in the lower burner, the vaporization process is affected and so is normal urination.

Deficiency:
Deficiency problems refer mainly to kidney failure, which results from the damage done by the above mentioned causes of heat and stasis. In summary, sexual excess and improper diet both lead to an accumulation of damp heat and ministerial fire, which contribute to qi stagnation and blood stasis. These, in turn, eventually exhaust kidney -yin, which is the foundation supplying fluid to the entire body for moistening and nourishing purposes. Once kidney yin is completely exhausted, kidney failure will ensue.

Heat:
The concept of heat includes two types: "damp-heat evil" and "hyperactivity of excessive ministerial fire." Damp heat evil occurs when there is an over consumption of greasy foods and alcohol. This leads to a malfunction of the stomach and spleen and causes a build up of damp heat that flows downwards, attacks the bladder and impairs the vaporization function responsible for fluid regulation. Symptoms like dribbling urine, frequent urination with or without prickling pain and periodic retention of urine can develop when this happens.

Ministerial fire is the source of heat power in the human body. In TCM, it is believed that when a man is overly sexually active, the kidney essence is consumed and the internal ministerial fire becomes excited. The excessive ministerial fire is a kind of "evil fire" which makes the body produce heat. This "evil fire" affects the lungs, bladder and triple burner and impairs the passage of body fluids. As a result, symptoms of urinary frequency and dribbling urine with prickling pain may occur.