Sadness is the emotion linked to the Lungs and the metal element (autumn) according to Traditional Chinese Medicine (TCM). Excessive or lasting sadness can thus unbalance the qi of the Lungs.

The Lung distributes inhaled qi with the air in the body, and contributes to the circulation of blood and Wei qi (or protective qi).
The Lung controls the skin, by opening and closing pores. It thus regulates the body’s temperature and protects it from external aggressions (wind, heat, cold, etc.).

A weak lung can result in various pathologies: shortness of breath, weak voice, asthma, rhinitis, or even dry or flabby skin, sparse or dull hair.