"Traffic Jam" in the Intestines: A TCM Perspective on Constipation and Not Having a Bowel Movement for Several Days

"The large intestine is the official of transmission and transformation, from which changes emerge." — Huangdi Neijing, Linglan Midian Lun

The Huangdi Neijing likens the large intestine to an official in charge of "transmission," responsible for transporting waste and completing transformation. But when this "official of transmission" goes on strike and does not "emerge" for several days, the body falls into an awkward traffic jam. Constipation, this seemingly ordinary affliction, what constitutional codes are hidden behind it? In TCM clinical practice, it is by no means simply explained by "drinking too little water" or "eating too few vegetables."

Is It "Insufficient Power" or a "Dried-Up Riverbed"?

Clinically, when facing the situation of not having a bowel movement for several days, the first step is to distinguish two directions: is the pushing force of the intestines insufficient, or is the intestinal "lubricating fluid" inadequate? The former is like a train without fuel, the latter like a riverbed without water flow. If the direction is reversed, the conditioning may make things worse the more you try to help.

Have you ever wondered why eating bananas and drinking honey water works for some people, while others get more bloated the more they consume? Why do some people have smooth bowel movements after drinking herbal cooling tea, while others suffer unbearable abdominal pain? These differences precisely point to the entirely different constitutional types behind constipation.

Pattern A: Spleen-Lung Qi Deficiency — The Predicament of an Intestine "Without Strength"

If you find that although you have the urge to defecate, you strain as if squeezing toothpaste, having to exert all your strength each time, and feel utterly exhausted after a bowel movement, this likely belongs to "qi deficiency-type constipation." The Neijing states: "When upright qi is preserved within, pathogenic factors cannot invade." When the qi of the spleen and lungs is insufficient, the transmission function of the large intestine weakens.

Acupoint Perspective · Zusanli: Zusanli, also known as Xialing or Sanli, is located on the anterolateral aspect of the lower leg, 3 cun below Dubi, one transverse finger-breadth from the anterior crest of the tibia. It belongs to the Foot Yangming Stomach Meridian and is the He-Sea point of the Stomach Meridian and the Lower He-Sea point of the Stomach. The Lingshu states: "When pathogenic factors are in the spleen and stomach, there is muscle pain... all are regulated at Zusanli." Its name implies that "Sanli" means regulating the interior of the upper, middle, and lower burners. It is one of the classic acupoints closely related to the transforming and transporting functions of the spleen and stomach in TCM theory.

This group of people often presents with shortness of breath, reluctance to speak, weak voice, easy sweating, and poor appetite. Traditional Chinese medicine holds that the lungs and large intestine are interior-exteriorly related; when lung qi is insufficient, the peristalsis of the large intestine is weak; when spleen qi is deficient, the transformation and transportation of food essence is impaired, and waste remains for too long. For maintenance, one may appropriately choose qi-tonifying ingredients such as Chinese yam, lotus seeds, and Euryale ferox to cook congee, but the specific regimen must be determined by a licensed TCM practitioner based on individual constitution. It is essential to avoid blindly using bitter-cold purgative substances, which would further deplete upright qi.

Pattern B: Yin Deficiency and Intestinal Dryness — The Drying Up of a Riverbed "Without Water"

Another common type is "yin deficiency and intestinal dryness." Imagine a dried-up riverbed where boats cannot navigate. The characteristics of this type of constipation are: dry, pellet-like stools resembling sheep droppings, one by one, with a burning sensation or pain at the anus during defecation. These individuals often also experience dry mouth and tongue, hot palms and soles, night sweats during sleep, and restlessness with insomnia.

Acupoint Perspective · Zhaohai: Zhaohai is located on the medial aspect of the foot, in the depression below the tip of the medial malleolus. It belongs to the Foot Shaoyin Kidney Meridian and is one of the eight confluent points, connecting with the Yin Qiao Vessel. The name "Zhaohai" implies that true yang within the kidney shines like sunlight illuminating the sea, reflecting its connection to the distribution of yin fluids in the human body. In TCM meridian theory, the region where this acupoint is located is related to the qi and blood regulation of the Yin Qiao Vessel, and it is often mentioned in ancient and modern discussions for understanding the moistening function of yin fluids in the body.

TCM theory points out that yin fluids are the key to moistening the intestines. When yin fluids in the body are insufficient, the intestines lose their nourishment, and stool naturally becomes dry, hard, and difficult to pass. Clinically, this type is more commonly seen in people who stay up late chronically, overwork, are advancing in age, or have chronic consumptive diseases. For maintenance, one may appropriately consume yin-nourishing and dryness-moistening ingredients such as white fungus, black sesame seeds, and mulberries. However, note that if accompanied by abdominal distension, aversion to cold, and sticky, unsmooth stools, other factors may be involved, and simply nourishing yin may not be appropriate.

Pattern C: Liver Qi Stagnation — "Traffic Jam" Caused by Emotions

There is a very interesting phenomenon: the more tense the emotions and the greater the stress, the more severe the constipation tends to be. Behind this is "liver qi stagnation" type constipation at work. The liver governs free coursing and is responsible for the smooth regulation of qi movement throughout the body. When there is long-term depression, irritability, or excessive worry, liver qi becomes stagnant, affecting the normal peristalsis of the large intestine.

Acupoint Perspective · Taichong: Taichong is located on the dorsum of the foot, between the first and second metatarsal bones, in the depression anterior to the junction of the metatarsal bases. It belongs to the Foot Jueyin Liver Meridian and is the Yuan-Source point of the Liver Meridian. The name "Taichong" implies that liver qi surges harmoniously and freely, like the surging of the Taichong vessel. The Lingshu · Jiu Zhen Shi Er Yuan states: "When the five zang organs have diseases, they manifest at the twelve Yuan-Source points." As the site where the original qi of the liver passes through, Taichong is closely related to the functional characteristics of the liver governing free coursing, and is an acupoint often mentioned in TCM when understanding the relationship between emotions and qi movement.

The typical manifestations of this type of constipation are: having the urge but being unable to pass stool, or incomplete evacuation, abdominal distension, frequent belching, often accompanied by emotional fluctuations, distending pain in the hypochondriac regions, and irregular menstruation in women. Traditional Chinese medicine holds that "when qi moves, blood moves; when qi stagnates, blood stasis occurs." When qi movement is blocked, the intestines naturally go on strike. For maintenance, in addition to appropriately consuming qi-regulating ingredients such as rose buds, finger citron, and aged tangerine peel steeped in water as tea, it is even more important to adjust emotional rhythms. Clinically, if some individuals also present with dull complexion and tortuous sublingual veins, they may belong to a composite state of qi stagnation and blood stasis, requiring comprehensive pattern differentiation by a licensed TCM practitioner.

Pattern D: Yang Deficiency and Cold Coagulation — The Icy Cold of a "Frozen" Intestine

There is another type that is easily overlooked: yang deficiency and cold coagulation type constipation. You may find it strange — how can constipation be associated with fear of cold? In fact, when yang qi is insufficient and cold accumulates internally, the intestines are like a frozen river, and peristalsis becomes extremely slow.

The typical characteristics of this group are: a bowel movement once every several days, stool not necessarily dry and hard, but defecation is very difficult, the abdomen prefers warmth and pressure, aversion to cold with cold hands and feet, soreness and weakness of the lower back and knees, and frequent nocturia. Traditional Chinese medicine holds that "yang qi is like heaven and sun"; when yang qi is insufficient, the warming function declines. Clinically, this type is more commonly seen in people who chronically eat raw and cold foods, indulge in coolness, and exercise little. For maintenance, one may appropriately choose warming and tonifying ingredients such as walnuts, chives, and mutton, but attention must be paid to whether there are complex conditions such as bitter taste in the mouth or alternating constipation and diarrhea — these signals may indicate mixed cold and heat, and self-administered warming tonification is not appropriate.

Common Recommendations: Follow the Heavenly Timing, Return to Balance

Regardless of the type, TCM emphasizes the principle of "following nature." The human body has twelve meridians corresponding to the twelve double-hours, and the Large Intestine Meridian is on duty during the Mao hour (5-7 AM). This time period is when intestinal activity is most active. Developing the habit of regular bowel movements at a fixed time can help alleviate the affliction of not having a bowel movement for several days.

In addition, avoid overly refined and processed foods in the diet, and appropriately consume ingredients rich in dietary fiber, such as whole grains, legumes, and green leafy vegetables. However, note that certain high-fiber foods may actually worsen abdominal distension in states of qi deficiency or yang deficiency. Therefore, "what to eat" must be based on accurate pattern differentiation.

Closing: A Counterintuitive Reflection

In the Shanghan Lun there is a passage: "For those with phlegm-fluid retention, one should harmonize with warming medicinals." Although this discusses phlegm-fluid diseases, it reminds us of a profound truth: some symptoms that appear "hot" may have their root in "cold"; some problems that appear "blocked" may essentially be "deficient." Could constipation — not having a bowel movement for several days — also be the body reminding us that it is time to stop and listen to what it truly needs?

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