May's breeze carries warmth, temperatures rise day by day, and the aroma of street-side cold drinks and spicy crayfish begins to waft through the air. Yet some people, after just one sip of iced sour plum drink, feel their stomach go into spasm; after only a few bites of spicy barbecue, their belly starts rumbling in protest, followed immediately by a dash to the bathroom. This affliction of "eating anything cold or spicy triggers diarrhea" is especially common at the transition between spring and summer. What signal is the body actually sending? In TCM clinical practice, this type of problem is often related to the "temperament" of the spleen and stomach—not personality, but an imbalance in functional state.
When Spleen-Stomach Deficiency Cold Meets External Pathogens, Why Does It Flare Up at the Slightest Trigger?
In spring, liver qi is exuberant; in summer, damp-heat gradually arises. During the transition between these two seasons, the body's internal "microclimate" is also undergoing dramatic adjustment. According to TCM theory, the spleen and stomach are like a pot, responsible for digesting food and transforming and transporting water-dampness. If the fire under this pot is insufficient—that is, if spleen-stomach yang qi is relatively weak—the food and fluids in the pot cannot be fully "cooked" and "evaporated." When cold or spicy foods enter the body, for someone with spleen-stomach deficiency cold, it is tantamount to throwing cold water on a feeble flame, or tossing a bundle of dry, hot firewood into an already parched pot.
Cold directly damages yang qi, causing cold pain in the stomach, borborygmus, and watery diarrhea. Spicy food is pungent and hot in nature, able to temporarily stimulate the spleen and stomach, but if the spleen and stomach are already deficient and cold, this stimulation instead disrupts the qi mechanism, causing intestinal peristalsis to spiral out of control and triggering abdominal pain and diarrhea. Clinically, these individuals often also present with cold hands and feet, aversion to cold, postprandial abdominal distension, and unformed stools. However, it should be noted that among people who get diarrhea from eating cold foods, some have pure spleen-stomach deficiency cold, while others have concurrent dampness or food stagnation—the direction of regulation is completely different and requires careful differentiation by a licensed TCM practitioner.
In TCM theory, the state of the spleen and stomach is often reflected through specific acupoints. For example, Zusanli, also known as Xialing or Sanli, is located on the anterior-lateral aspect of the lower leg, 3 cun below Dubi, one 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 · Xieqi Zangfu Bingxing states: "When pathogenic qi is in the spleen and stomach, it causes muscle pain... all are regulated at Zusanli." This shows that Zusanli is an important acupoint for identifying the strength of stomach qi and whether spleen-stomach transformation and transportation are normal, and is also one of what the ancients called the "major strengthening acupoints."
In spring, liver wood restrains spleen earth, and emotional fluctuations easily affect digestive function. Some people normally have adequate spleen and stomach function, but under great stress or anxiety, eating cold or spicy food is more likely to cause problems. This suggests the possibility of liver-spleen disharmony—liver qi stagnation can transversely invade the stomach, making an already fragile spleen and stomach even more vulnerable. Therefore, focusing only on "cold" and "spicy" as the two triggers is insufficient; one must also see who is "lighting the fire" behind the scenes.
"Cold-Heat Complex" Under Cold and Spicy Stimulation: How to Differentiate?
Some may ask: since cold damages yang and spicy damages yin, why do some people get stomach pain and diarrhea from eating spicy food? This precisely reflects the complexity of TCM pattern differentiation. Stomach pain after eating spicy food is not necessarily a "heat" problem. The pungent and hot nature of chili peppers rapidly dilates blood vessels and accelerates gastrointestinal peristalsis. If the spleen and stomach already have cold-dampness, this heat is like pouring hot water onto ice—cold and heat clash, triggering spasms. TCM calls this "cold-heat complex," which is not uncommon in clinical practice.
The typical presentation of these individuals is: the stomach fears cold, yet eating hot-natured foods causes internal heat; the tongue coating may be white and greasy or yellow and greasy, and stools are either loose or dry and bound. They often have both a deficiency-cold aspect and a damp-heat or food stagnation aspect. Pure warming and tonifying will aggravate heat, while pure clearing of heat will damage yang. Therefore, a licensed TCM practitioner must precisely determine the ratio of cold to heat through the four diagnostic methods of inspection, auscultation and olfaction, inquiry, and palpation. For example, some people are suited to harmonize the spleen and stomach with neutral-natured ingredients, while others need to resolve dampness first before warming the middle—if the sequence is wrong, the result is counterproductive.
At the transition between spring and summer, dampness gradually becomes heavier. Dampness pathogen encumbering the spleen will reduce the spleen-stomach's transformation and transportation function. At this point, eating cold or spicy food is like stepping on the accelerator on a muddy road—the wheels spin but the car does not move. In people with heavy dampness, diarrhea is often sticky and unsatisfying, with stools that cannot be flushed clean, and may be accompanied by heaviness of the body and foggy-headedness. This type differs from pure deficiency cold, and the focus of regulation is on resolving dampness and awakening the spleen, rather than blindly warming and tonifying.
When dampness pathogen encumbers the spleen, Zhongwan (also known as Taicang or Weiwuan), on the midline of the upper abdomen, often becomes a key site for identifying spleen-stomach function. Zhongwan is located on the upper abdomen, on the anterior midline, 4 cun above the umbilicus. It belongs to the Ren Meridian and is the Front-Mu point of the Stomach and the Hui-Meeting point of the Fu organs. The Nanjing · Forty-Fifth Difficulty states: "The Fu organs meet at Taicang," Taicang being Zhongwan. It gathers the channel qi of the six fu organs and is an important acupoint reflecting the state of the stomach fu's transformation and transportation of water-dampness and reception of food.
Daily Care: Starting from "Knowing the Enemy"
Since the problem lies in the spleen and stomach's "firepower" and "dampness," daily care can be organized around these two directions. But please remember, the following is only knowledge sharing, not a diagnostic or treatment plan. Each person's constitution is different, and the safest approach is to consult a licensed TCM practitioner at a licensed medical institution.
For those leaning toward deficiency cold, one may try adding some warm-natured ingredients to the diet, such as ginger, fennel, and cinnamon bark. These ingredients help warm the spleen and stomach, but attention must be paid to dosage—excessive amounts will instead generate heat. Before eating cold foods, drink a few sips of warm water or ginger tea to give the stomach a "preheating" process. For spicy foods, choose mildly spicy options and avoid eating on an empty stomach.
For those with heavier dampness, appropriately consume spleen-fortifying, dampness-resolving ingredients such as Poria, white hyacinth bean, and coix seed. However, coix seed is cool in nature, and those with a deficiency-cold constitution should not consume it in large amounts over the long term. Walking after meals and avoiding prolonged sitting help qi movement and reduce dampness retention. If eating spicy food easily causes diarrhea, one may try pairing spicy dishes with some vinegar during cooking—sourness can astringe and, to a certain extent, help buffer the pungent and dispersing nature of chili peppers.
Emotional regulation is also crucial. At the transition between spring and summer, liver qi is prone to stagnation. Maintaining a cheerful mood and avoiding excessive anxiety directly helps stabilize spleen-stomach function. If you notice that you are more prone to discomfort after eating cold or spicy food when under stress, consider trying relaxation methods such as deep breathing and meditation.
There is another acupoint on the abdomen closely related to "borborygmus and diarrhea"—Tianshu, also known as Changgu or Gumen, located on the abdomen, level with the center of the umbilicus, 2 cun lateral to the anterior midline. It belongs to the Foot Yangming Stomach Meridian and is the Front-Mu point of the Large Intestine. Its name means "pivot of the sky," and it governs the ascending and descending of qi movement. The Suwen · Liu Wei Zhi Da Lun states: "Above Tianshu, heavenly qi governs; below Tianshu, earthly qi governs." This is often used to understand the coordinating relationship between the middle jiao spleen-stomach and intestinal function.
Frequently Asked Questions
Q: Why is it that among people who get diarrhea from eating cold food, ginger tea helps some but makes others feel worse?
A: This reflects constitutional differences. Ginger tea is warm in nature and suits those with pure deficiency-cold constitution. But if there is damp-heat or food stagnation in the body, warm ginger tea will aggravate the "fire" or "blockage," leading to more bloating and stickier stools. Therefore, one should not blindly follow the crowd.
Q: In TCM, what is the difference between diarrhea after eating spicy food and diarrhea after eating cold food?
A: Diarrhea after eating cold food is mostly due to cold pathogen directly damaging spleen yang, leading to failure of transformation and transportation. Diarrhea after eating spicy food has more complex causes—it may be that pungent stimulation causes excessively rapid gastrointestinal peristalsis, or that a cold-heat complex constitution is "detonated" by the spiciness. The two require different regulatory approaches: the former focuses on warming the middle, while the latter requires harmonizing cold and heat.
Q: At the transition between spring and summer, how can I tell whether I am "deficiency cold" or "damp-heat"?
A: A simple reference: those with deficiency cold fear cold, have cold hands and feet, watery stools, and a white tongue coating; those with damp-heat fear heat, have dry mouth but do not desire to drink, sticky stools, and a yellow greasy tongue coating. However, in clinical practice the two are often intermixed, and the most accurate method is for a licensed TCM practitioner to determine through tongue and pulse diagnosis.
Q: If eating cold or spicy food long-term causes diarrhea, could it lead to malnutrition?
A: If it recurs repeatedly, it may indeed affect nutrient absorption. But more importantly, one should find the root cause. Some people have weak spleen-stomach function, some have emotional factors, and others may have intestinal flora imbalance. It is recommended to start by adjusting eating rhythms and improving lifestyle habits, rather than simply avoiding certain types of food.