The Core Concepts
Qi (pronounced "chee") is often translated as "energy," but it's better understood as the functional activity of the body — the processes that keep you alive, moving, and responsive. When Qi flows freely, you feel well. When it stagnates, becomes deficient, or moves in the wrong direction, symptoms arise.
Yin and Yang describe the complementary opposites in all phenomena — activity and rest, heat and cold, expansion and contraction. Health is dynamic balance between these forces. Disease is their imbalance.
The Meridian System is a network of channels through which Qi flows, connecting the surface of the body to the internal organs. Acupuncture points are locations along these channels where the flow of Qi can be influenced. Modern research has identified these points as sites of high electrical conductivity, dense nerve endings, and connective tissue planes.
Diagnosis in TCM
TCM diagnosis identifies a pattern — a configuration of signs and symptoms that reveals the nature and location of imbalance. Two patients with the same Western diagnosis may have entirely different TCM patterns and receive completely different treatments.
Diagnosis involves careful questioning, observation of the tongue (which reflects the state of internal organs), and pulse diagnosis — feeling the pulse at three positions on each wrist, each corresponding to different organ systems.
Why It Still Works
TCM's longevity isn't mystical — it's empirical. Over thousands of years and billions of patient encounters, effective treatments were identified, refined, and passed down. Modern research is increasingly explaining the mechanisms: acupuncture modulates the nervous system, regulates inflammation, affects neurotransmitter levels, and influences the endocrine system. The "energy" language is a pre-scientific metaphor for processes that are real and measurable.