Sifu Dan Ferrera has been published on the CoSozo website with a very concise introduction to the The Five Element Theory as it relates to Qigong and Traditional Chinese Medicine. From the article
Taoist Qigong practices as well as Traditional Chinese Medicine theory utilize a unique health philosophy based upon emotional energies, elements, Feng Shui and internal organ systems. Today we know that unbalanced emotional states are one of the leading causes of disease and illness. Stanford University Medical School and numerous health experts say the number one killer on the planet is stress.