Seasonal correspondance: LU/LI & Autumn
In Traditional Chinese Medicine (TCM) and its Zangfu theory, the lungs and the large intestine are considered paired organs that share a connection not only with each other but also with the season of autumn. Zangfu theory describes the physiological functions and relationships between the Zang organs (solid organs) and the Fu organs (hollow organs) in the body.
Autumn is the transition between the Yang (the active energy of summer) to the Yin (the introverted season of winter). It’s our season for renewal, as we begin to prepare to completely turn inwards for nurturing and nourishment.
Here's how the lungs, large intestine, and autumn are connected in this framework.
1. Organ Pairing: In TCM, the lungs and the large intestine are considered a paired organ system, and they are interconnected in their functions and energetics. This means that they influence each other's functioning and are closely related.
2. Seasonal Correspondence: Autumn is associated with the Metal element in TCM, and both the lungs and the large intestine are organs associated with the Metal element. Each season is linked to a specific element, and in this case, autumn corresponds to Metal. The season of autumn has a particular impact on the functioning of the lungs and the large intestine.
The lungs are responsible for governing respiration and controlling the circulation of Qi throughout the body. They are also associated with the skin and are considered the first line of defense against external pathogens. The large intestine is responsible for the elimination of waste and the absorption of water from the stool. It plays a crucial role in maintaining regular bowel movements and overall digestive health.
3. Lung Function: The lungs in TCM are responsible for governing respiration, controlling the circulation of Qi (vital energy), and regulating the skin's health. They are also associated with the emotion of grief. During autumn, the air tends to be drier and cooler, which can affect the respiratory system. People may be more prone to respiratory issues during this season (allergies, cough, asthma) and this is why it's important to pay attention to lung health. The lungs are considered particularly vulnerable during this season therefore precautions to protect lung health in the autumn are advised, such as dressing appropriately for changing weather conditions (scarf, hat, jacket) protecting the upper extremities will ensure we remain free from excessive wind and cold exposure while enjoying time outdoors in nature and practicing pranayama or deep lung breathing and clearing exercises. We see this process taking place with the natural inspiration and expiration of the lungs. We exhale to rid our bodies of toxins and carbon dioxide and to make space for fresh new oxygen and prana or lifeforce to be inhaled. The lungs are closely connected to skin and immunity, which is considered the "third lung" because it is responsible for respiration through its pores. Additionally, the lungs are also associated with the immune system and the protection of Wei Qi (defensive qi) therefore supporting lung health during this season is important for overall immunity.
4. Large Intestine Function: The large intestine plays a crucial role in the elimination of waste and the absorption of water from the stool. It is associated with the Metal element as well. Imbalances in the large intestine can lead to issues such as constipation or diarrhea. The primary function of the large intestine is to collect, store, and eliminate waste products from the body. It receives digested food remnants from the small intestine, absorbs water and electrolytes and forms solid stool. Proper elimination is crucial for maintaining overall health and preventing the accumulation of toxins in the body. The large intestine is responsible for regulating the timing and frequency of bowel movements. It coordinates the movement of stool through peristalsis and ensures that waste material is expelled from the body in a controlled manner. Proper bowel function is essential for digestive health. In TCM, balance and harmony are central concepts. The large intestine plays a role in maintaining the balance of body fluids which has a connection to the “moistening” of the lungs or respiration function. When the large intestine functions smoothly, it supports the overall balance and temperature of the body's internal systems. Any imbalances or issues in the large intestine can affect lung health and vice versa.
5. Emotional and Psychological Aspects: In TCM, emotional imbalances are closely tied to organ health. Grief and sadness are associated with the lungs, and the ability to "let go" both physically (waste elimination) and emotionally (ireleasing negative emotions) is associated with the large intestine. The transition to autumn and its association with Metal can sometimes evoke emotions related to letting go and coping with loss, making emotional balance important during this season.
Just as the trees release their leaves, autumn is the season of shedding and letting go.
6. Diet and Lifestyle: TCM dietary and lifestyle recommendations often change with the seasons. During autumn, it is common to emphasize foods that support lung and large intestine health, such as foods with pungent flavors and those that help with moistening the respiratory system and promoting healthy bowel movements. Radish, Daikon, Pear, Garlic, Ginger, Yams, Onion, Dark Leafy Greens, Mushrooms, Mullein tea, Chrysanthemum tea, licorice root tea, and leeks are beneficial to lung health. Pungent foods like radish and onion can help disperse or break up mucous and pears, honey and licorice tea can moisten and soothe a dry respiratory tract. Foods that support the large intestine are root vegetables high in fiber like sweet potatoes, cabbage, turnips, carrots, parsnips and probiotic rich foods like kimchi, sauerkraut, keifer and asparagus. Additionally, warm and cooked foods are recommended for easy digestion. And most importantly, room temp or hot water moistens and supports the body’s natural detoxification.
This lung/large intestine interconnectedness is important for understanding how changes in the environment, emotions, and dietary choices can influence the health and balance of these organs during this particular season. The large intestine's role in TCM goes beyond mere waste elimination and encompasses aspects of digestion, fluid balance, emotional health, and its close connection to the lungs and immune function within the body.
