There is a moment in late September when the light changes. It becomes angled, golden, thinner. The air carries a crispness that was not there the week before, and somewhere in the distance, leaves begin their slow surrender. In Traditional Chinese Medicine, this is not just weather — it is medicine. Autumn is the season of the Metal element, and its deepest teaching is about the art of letting go.
In the Five Element framework that underpins TCM, autumn corresponds to Metal. The organ systems associated with Metal are the Lung and the Large Intestine. These two organs share a functional theme that becomes particularly relevant as the days grow shorter: the release of what is no longer needed.
The Lungs, in TCM physiology, are responsible for receiving fresh Qi from the air and circulating it throughout the body. They are the interface between inner and outer, the gate through which the body meets the world. Every breath is a small act of receiving and releasing — inhale the new, exhale the old. This rhythmic exchange is the essence of Metal’s energy.
The Large Intestine complements this by performing a similar function on the physical level: it receives what the body has extracted nutrients from and eliminates what remains. Together, the Lung and Large Intestine govern the body’s ability to take in what is vital and let go of what has served its purpose.
In TCM emotional theory, each element carries a characteristic emotion. Metal’s emotion is grief — not the pathological depression that requires clinical intervention, but the natural sorrow that accompanies loss. Autumn, with its dying leaves and retreating warmth, evokes grief on a visceral level. This is not a flaw in the design. It is the design.
Grief, when it flows freely, is cleansing. It is the body-mind’s way of honoring what has passed. The problem arises when grief becomes stuck — when we resist the natural process of release and hold onto what should be let go. In TCM, stagnant grief injures the Lungs, manifesting as shallow breathing, chest tightness, a sense of something unexpressed, chronic coughing, or a feeling of being unable to take a full, satisfying breath.
The solution, from the TCM perspective, is not to suppress grief but to allow it to move. This might mean actually crying, talking about what was lost, creating a ritual of closure, or simply spending time in conscious breathing. The Lungs need to exhale grief the way they exhale carbon dioxide — completely, without holding back.
Dietary adjustment is one of the most practical applications of seasonal TCM wisdom. As summer’s heat fades and the body’s Yang energy begins to draw inward, the diet should shift accordingly.
Summer eating favors cooling, hydrating foods — watermelon, cucumber, mung beans, green tea. These foods clear Heat and support the body through high temperatures. But continuing to eat this way into autumn can weaken the Spleen and Stomach, which rely on warmth to function optimally.
Autumn calls for a transition toward warmer, more nourishing foods. Think roasted root vegetables — carrots, sweet potatoes, turnips. Think pears, which are particularly valued in TCM for moistening the Lungs and soothing dry throats. Think ginger, cinnamon, and garlic, which gently warm the system without overheating it.
This is also the season for white foods in the TCM dietary tradition. White corresponds to the Metal element, and foods like daikon radish, lotus root, lily bulb, and almonds are considered particularly nourishing for the Lungs. A simple soup made from pear, lotus root, and lily bulb is a classic autumn remedy in Chinese households, used to soothe dry coughs and protect respiratory health.
In TCM, the skin is considered the outermost expression of the Lung system. The Lungs “govern the skin and body hair” and are responsible for opening and closing the pores — a function called Wei Qi (defensive Qi). When the Lung Qi is strong, the skin is supple, the pores regulate temperature effectively, and the body resists external pathogens.
In autumn, the dropping humidity and cooler air can dry the skin and challenge the Lungs. This is the season when respiratory infections begin to rise, partly because the Lung’s defensive Qi must adapt to changing conditions. The TCM response is to support the Lungs through diet, moderate exercise that opens the chest, and adequate hydration — not with ice water, which shocks the system, but with warm or room-temperature fluids.
Protecting the neck with a light scarf during autumn wind is a simple but significant TCM practice. The back of the neck, particularly the area around the Fengfu acupoint, is considered a vulnerable gate where external Wind can enter and disrupt the Lung’s function. A scarf is, in a sense, the simplest form of acupuncture.
Beyond diet and physical health, autumn in TCM carries a philosophical lesson that many people find unexpectedly profound. The Metal element is about clarity, boundaries, and the courage to release. Just as the tree releases its leaves — not in defeat, but in preparation for renewal — autumn asks us to examine what we are carrying that no longer serves us.
This might be a habit, a relationship, a project, a self-image, or a grudge. The body often signals what needs releasing through physical symptoms: chest tightness, shallow breathing, constipation (the literal inability to let go), skin problems, or a persistent feeling of heaviness.
The TCM approach to these symptoms is not simply to treat them in isolation. A skilled practitioner will ask: what is this person holding onto? What has not been completed, mourned, or expressed? The answer is often found not in the presenting symptom but in the broader story of the patient’s life.
Autumn is the season when this question becomes easiest to hear. The light is gentler, the world is quieter, and something in us knows that holding on to everything, all the time, is not sustainable. The trees do not cling to their leaves out of fear. They release them with a kind of trust that spring will come again.
There is a Chinese proverb that says: The trees that lose their leaves in autumn are the ones that survive winter. The same applies to people. Letting go is not weakness. It is the deepest form of intelligence the Metal element can teach.
Dr. Hanqing Zhao is a licensed TCM physician and researcher with extensive experience in classical Chinese medicine theory and clinical practice. He writes about the timeless wisdom of Traditional Chinese Medicine and its relevance to modern life.
Disclaimer: This article is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider for personal health concerns.
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