TCM Dampness Relief for Underground Workers

Working underground means working in a world of dampness. Whether you are mining coal, excavating tunnels, constructing subway lines, or working in a basement facility, the environment below ground is consistently humid, cool, and dark. Water seeps through rock walls. The air is thick with moisture. Temperatures fluctuate between hot and cold. After hours or years in this environment, the body begins to show the effects: heavy, aching limbs, persistent fatigue, sluggish digestion, stiff joints, and a general sense of being "weighed down."

Traditional Chinese Medicine has a name for this: dampness (湿, shi). Dampness is one of the six external pathogenic factors in TCM, and it is the signature pathogen of underground and humid environments. TCM developed a comprehensive system for understanding, preventing, and addressing dampness through diet, herbs, acupressure, and lifestyle practices. While these practices cannot replace workplace safety measures or medical care, they offer supportive wellness traditions that may help workers maintain comfort and energy in challenging environments. In this guide, we explore these traditional practices.

If you are new to TCM, our introduction to Traditional Chinese Medicine and our Zang-Fu organ systems guide provide helpful context.

How TCM Views Dampness

In TCM, dampness is a pathogenic factor — an external or internal condition that disrupts the body's normal functioning. Understanding dampness is essential for anyone who works in humid, underground, or cold environments.

The Nature of Dampness

TCM describes dampness with several key characteristics that perfectly match the experience of underground workers:

• Heaviness: Dampness causes a sensation of heaviness in the limbs, head, and body — the "leaden" feeling that comes after hours underground.
• Sluggishness: Dampness slows everything down — movement, thinking, digestion, and energy. It makes you feel "stuck."
• Stubbornness: Dampness is the most difficult pathogen to resolve. It lingers, recurs, and resists quick treatment. Like trying to dry a wet sponge in a humid room, it takes time.
• Downward tendency: Dampness tends to settle in the lower body — the legs, lower abdomen, and joints — causing swelling, heaviness, and edema.
• Sticky, turbid nature: Dampness produces sticky, turbid symptoms: cloudy urine, sticky sweat, thick tongue coating, and sticky phlegm.

Damp-Cold vs. Damp-Heat

Underground environments typically produce damp-cold — the combination of humidity and low temperatures. Damp-cold is particularly damaging because cold constricts (blood vessels, muscles, joints) while dampness stagnates, creating a double burden on the body. Symptoms of damp-cold include cold and heavy limbs, pale complexion, clear or whitish urine, abdominal pain that is relieved by warmth, and joint pain that worsens in cold, damp weather. In some underground environments with poor ventilation and high temperatures, damp-heat can also develop, with symptoms like redness, swelling, sticky yellow sweat, and strong odor.

The Spleen and Dampness

The Spleen (脾, Pi) is the organ most affected by dampness in TCM. The Spleen's primary function is to transform and transport — to take the food and drink we consume and transform them into qi and blood for the body's use. When the Spleen is healthy, digestion is efficient, energy is steady, and fluids are properly metabolized. When the Spleen is weakened by external dampness, cold, or poor diet, it cannot perform this function, and dampness accumulates internally. This creates a vicious cycle: external dampness weakens the Spleen, and a weak Spleen generates more internal dampness.

Symptoms of Dampness in Underground Workers

Underground workers with dampness accumulation may experience some or all of the following:

• Heavy limbs: Arms and legs feel weighted, sluggish, and difficult to move.
• Persistent fatigue: Tiredness that does not resolve with sleep; worse in the morning.
• Digestive issues: Poor appetite, bloating after eating, sticky or loose stools, nausea.
• Foggy thinking: Difficulty concentrating, feeling "cloudy" or unclear in the head.
• Joint stiffness: Achy, stiff joints, especially in the knees, lower back, and ankles, worse in cold, damp weather.
• Water retention: Swelling in the legs, ankles, or face, especially at the end of a shift.
• Thick tongue coating: A thick, white (damp-cold) or yellow (damp-heat) coating on the tongue.
• Sticky feeling: A general sense of being "sticky" or "grungy" that does not wash off.

Dampness-Removing Foods

TCM dietary therapy for dampness focuses on foods that strengthen the Spleen, drain dampness through urination, and warm the body to counteract cold. The following foods are the most important in TCM for this purpose.

1. Coix Seed (薏苡仁, Yi Yi Ren)

TCM nature: Sweet, bland, slightly cool. Enters the Spleen, Lung, and Kidney channels.

Traditional use: Coix seed (also called Job's tears or Chinese pearl barley) is the single most important TCM food for draining dampness. It "strengthens the spleen, drains dampness, expels wind-dampness, and clears heat." It promotes urination, reduces swelling, and helps the body eliminate excess fluid. TCM texts specifically recommend coix seed for heavy limbs, joint pain from dampness, edema, and poor digestion.

How to use: Rinse and soak coix seeds for 2 to 4 hours. Cook into congee, soup, or tea. A standard preparation is coix seed and adzuki bean congee (recipe below). Use 30 to 60 grams per day. Roasted coix seed tea is also popular — dry-roast the seeds in a pan until golden, then steep in hot water.

2. Adzuki Bean (赤小豆, Chi Xiao Dou)

TCM nature: Sweet, sour, neutral. Enters the Heart and Small Intestine channels.

Traditional use: Adzuki bean "promotes urination, drains dampness, reduces swelling, and resolves toxins." It is the classic partner to coix seed for dampness, and together they form the most widely used dampness-draining combination in TCM. Adzuki beans are particularly effective for edema and water retention in the lower body.

How to use: Soak for 2 to 4 hours, then cook with coix seeds into a soup or congee. Drink the cooking liquid as a tea, and eat the beans. Use 30 to 50 grams per day.

3. Coix Seed and Adzuki Bean Soup (薏苡仁赤小豆汤)

The classic TCM dampness-draining remedy:

Recipe: Combine 50 grams of coix seed and 50 grams of adzuki bean (both soaked for 4 hours). Add to a pot with 6 cups of water. Bring to a boil, then simmer for 1 to 2 hours until the beans are soft and the liquid is reduced. Drink 1 to 2 cups of the liquid daily; eat the beans as well. A small amount of rock sugar or red dates can be added for taste. This soup can be consumed daily for 2 to 4 weeks, then continued 3 to 4 times per week as maintenance.

Note: Do not add rice to this soup if the primary goal is dampness draining — rice is slightly dampness-generating and is better used when the goal is also to nourish the stomach.

4. Other Dampness-Removing Foods

• Ginger (生姜, Sheng Jiang) — warms the spleen and stomach, expels cold, resolves dampness. Add to soups, tea, and stir-fries.
• White radish (萝卜, Luo Bo) — moves qi downward, resolves phlegm, aids digestion. Grate and eat raw or add to soups.
• Winter melon (冬瓜, Dong Gua) — promotes urination, drains dampness, clears heat. Cook in soup with the skin on.
• Chinese yam (山药, Shan Yao) — strengthens the spleen, supports the lungs and kidneys. Add to soups and congee.
• Chenpi (dried tangerine peel, 陈皮) — regulates qi, resolves dampness, aids digestion. Add a strip to tea or congee.
• Fennel seed — warms the spleen, dispels cold, regulates qi. Use as tea or in cooking.

Foods to Avoid or Limit

When dealing with dampness, TCM advises avoiding foods that generate or worsen dampness:

• Cold and raw foods (salads, ice water, ice cream, sushi) — they impair the Spleen's warming function.
• Dairy products (milk, cheese, yogurt) — TCM considers dairy to be "dampness-generating."
• Greasy, fried, and oily foods — they are difficult for the Spleen to process.
• Sweet, sugary foods — they generate phlegm and dampness.
• Cold beer and excessive alcohol — they introduce both cold and dampness.

Ginger Tea — The Simplest Dampness Remedy

Of all the TCM remedies for damp-cold, ginger tea is the simplest, cheapest, and most accessible. Fresh ginger is warming in nature and is traditionally used to warm the spleen and stomach, expel cold, resolve dampness, and promote sweating (which helps the body release dampness through the skin).

Basic Ginger Tea

Slice 3 to 4 thin slices of fresh ginger. Add to a cup of hot water and steep for 5 to 10 minutes. Drink warm, 1 to 2 times daily. A small amount of brown sugar or honey can be added. Drink before shifts in cold, damp environments and after shifts to warm the body.

Ginger and Brown Sugar Tea

Add 1 tablespoon of brown sugar to the basic ginger tea. Brown sugar is warming in TCM and nourishes blood. This combination is particularly good for women and for workers who feel cold and fatigued. See our TCM food therapy guide for related warming foods.

Ginger and Jujube (Red Date) Tea

Add 3 to 4 pitted red dates to the ginger tea. Red dates strengthen the spleen, nourish blood, and harmonize the warming effects of ginger. This is a balanced, nourishing tea for daily use.

Acupressure for Dampness

Yinlingquan (SP9) — Yin Mound Spring

Location: On the inner side of the lower leg, below the knee. Place your hand on your knee with your fingers pointing downward along the shin. The point is in the depression just below the knee, on the inner side of the shin bone, where your index finger naturally rests.

Traditional use: Yinlingquan is the most important acupressure point for dampness in all of TCM. It is classified on the Spleen meridian and is specifically used to "drain dampness and strengthen the spleen." It promotes urination, reduces water retention and edema, relieves heaviness in the legs, and supports digestive function. For underground workers who stand in damp, cold environments, this point is essential.

How to apply: Use the thumb to apply firm, steady pressure to SP9 on each leg for 2 to 3 minutes. You can also massage in small circles. Apply morning and evening, or after shifts when the legs feel heavy. Applying warmth (a warm towel or heating pad) to this point enhances the dampness-draining effect.

Other Useful Points

Other points that help with dampness include Zusanli (ST36) — below the knee on the outer side of the shin — the most important point for strengthening the Spleen and overall qi; Shenque (CV8) — at the center of the navel — warmed with moxibustion or a hot water bottle to warm the spleen and expel cold; and Zhongwan (CV12) — on the midline of the abdomen, midway between the navel and sternum — which strengthens the spleen and resolves dampness in the digestive system. For more on acupressure, see our acupressure basics guide.

Lifestyle Practices for Damp Environments

Beyond foods and acupressure, TCM recommends several lifestyle practices to manage dampness:

• Keep warm. Wear layers, especially protecting the lower back (kidney area), abdomen (spleen), and knees. Cold and damp enter through these areas.
• Change out of wet clothes immediately. Never stay in damp or wet clothing. Keep dry socks and underclothes at work.
• Warm foot soaks after work. Soak the feet in hot water (40 to 43 degrees Celsius) with a handful of coarse salt or a few slices of ginger for 15 to 20 minutes. This warms the body, draws dampness downward and out through the feet, and promotes sweating. See our foot soak guide.
• Eat warm, cooked foods. Soups, stews, and congees are the TCM ideal. Avoid cold, raw, and iced foods. Cooking is "pre-digestion" that makes the Spleen's job easier.
• Avoid overeating. The Spleen is stressed by large meals. Eat moderate portions, 3 to 4 times per day if needed.
• Dry the living environment. Use a dehumidifier at home. Keep the living space warm and dry. Do not sleep in a damp room.
• Exercise to induce light sweating. Gentle, sustained exercise (walking, stretching, qigong) helps the body release dampness through sweat. Avoid excessive sweating, which depletes qi. See our gentle qigong guide for suitable routines.
• Drink warm fluids. Warm water and ginger tea throughout the day. Avoid iced drinks and cold beer.

When to Seek Medical Help

The practices in this article are traditional wellness practices, not medical treatments. Symptoms of dampness — fatigue, digestive issues, joint pain, swelling — can also be caused by serious medical conditions including:

• Kidney disease (edema, fatigue)
• Heart disease (edema, shortness of breath)
• Arthritis (joint pain, stiffness)
• Thyroid disorders (fatigue, weight changes)
• Infections (fever, fatigue)
• Occupational diseases specific to underground work

If symptoms are persistent, severe, or worsening, consult a healthcare provider. Workers in underground environments should follow all occupational health and safety guidelines and attend regular medical screenings.

For related topics, see our guides on TCM lung protection for miners and TCM joint pain remedies for miners.

The Bottom Line

Underground workers face a daily assault of damp-cold — the pathogenic combination TCM identifies as most damaging to the Spleen and joints. By eating dampness-removing foods like coix seed and adzuki beans; drinking warming ginger tea; applying acupressure to Yinlingquan (SP9); keeping warm and dry; using warm foot soaks; and eating warm, cooked foods, workers can support their body's ability to manage the effects of a damp environment.

But these are traditions — supportive wellness, not medical treatment. If you have persistent symptoms or work in a challenging underground environment, follow all safety protocols and seek professional medical care when needed.

Frequently Asked Questions

How long does it take for coix seed and adzuki bean soup to work?

Dampness is stubborn and slow to resolve — this is one of its defining characteristics in TCM. Drinking coix seed and adzuki bean soup daily typically takes 2 to 4 weeks before noticeable improvement in symptoms like heaviness, swelling, and fatigue. For chronic, long-standing dampness from years of underground work, consistent dietary changes over 1 to 3 months may be needed. The key is consistency — drinking the soup sporadically will not produce results. Combine the soup with warming foods, ginger tea, acupressure, and lifestyle changes for the best outcomes.

Can I use coix seed tea every day long-term?

Coix seed is generally safe for regular use as a food. However, because it is slightly cooling in nature, workers in very cold environments may want to balance it with warming ginger tea or add warming ingredients (red dates, ginger) to the soup. If you are pregnant, consult your healthcare provider before using coix seed in medicinal amounts, as TCM traditionally cautions against its use during pregnancy. If you have kidney disease or are on diuretic medication, consult your doctor before significantly increasing foods that promote urination.