People with a predominantly Yang constitution and a disciplined and focused lifestyle — which assists in the cultivation of Liver Yang — can regularly use marijuana and remain active and creative for years, maybe even decades. However, even for them, marijuana will slowly deplete Liver Yang and subsequently affect their ability to act upon their ideas. Everyone has a mental picture of who they are, of who they want to be and what they want to do in life. In TCM this is directly connected with the Liver. If you repeatedly take a substance that has a direct impact on the functioning of the Liver, as marijuana does, it can create an imbalance between your visions or ideas, and the impetus to act upon them. The idea becomes bigger and the action becomes smaller so you become more occupied with thinking and talking than doing. This is particularly frustrating for creative or talented people as they still have their creativity but have lost their ability to act. Once this happens, the magnifying nature of the drug, rather than increasing awareness of growth or expansion, increases awareness of being stagnant physically and emotionally. In this state, evidence of achievement in other people can make the drug-user acutely aware of their own deficiencies and they can become emotionally reactive."
- Jost Sauer, a German-Australian, based in Brisbane, from his book "Higher and Higher"