Why Salads Can Be Bad for You — The Chinese Medicine View

By Dr (TCM) Attilio D'Alberto | Traditional Chinese Medicine Practitioner, Wokingham, Berkshire

Few foods enjoy the unquestioned "healthy" status that salads do. They dominate lunch menus, wellness culture, diet plans, and medical advice about eating more vegetables. But in my clinic, I see a surprising number of patients whose bloating, fatigue, sluggish digestion, cold hands and feet, weight gain, and loose stools improve significantly when they reduce or stop eating cold raw salads. The pattern is consistent enough that it's worth a direct discussion. Salads are not inherently bad — but for many people, particularly in the UK climate, they are quietly undermining digestive function in ways that traditional Chinese medicine predicted and explained two thousand years ago.

On this page

1. The problem isn't vegetables — it's temperature and rawness
2. The Spleen in Chinese medicine
3. The Stomach — the body's compost heap
4. Ginger — the classical remedy for a cold stomach
5. Why cold raw foods damage the Spleen and Stomach
6. Dampness — the unwanted consequence
7. Signs salads may be hurting you
8. Who is most affected
9. Climate matters — the UK context
10. Better ways to eat vegetables
11. When salads are fine
12. Frequently asked questions

The problem isn't vegetables — it's temperature and rawness

Let me be clear from the outset: vegetables are essential to good health. The issue Chinese medicine identifies is not with vegetables themselves but with the specific combination of features that defines a typical Western salad — raw, cold, often eaten straight from the fridge, frequently dressed with vinegar or lemon juice (further cold), and consumed as a substantial meal rather than a small side. This combination places a significant demand on the digestive system that the body must work hard to meet, and in many people that demand is quietly draining energy and disrupting digestion without an obvious cause.

The Western nutritional view focuses on what a food contains — vitamins, fibre, antioxidants, calories. The Chinese medicine view adds another dimension: what a food does to the digestive system as it is processed. A food can be rich in nutrients but still impose a cost on the body, and that cost matters clinically.

The Spleen in Chinese medicine

To understand the TCM view of salads, you need to understand the Spleen. The "Spleen" in Chinese medicine is not identical to the anatomical spleen of Western medicine — it refers to a functional system that governs digestion, nutrient absorption, energy production, and the transformation of food into qi and blood. It includes much of what Western medicine attributes to the stomach, small intestine, pancreas, and aspects of the immune system.

The Spleen has several central roles:

• Transformation and transportation — converting food into qi and blood, and distributing these throughout the body
• Governing the flesh and limbs — Spleen qi is directly responsible for muscle tone, strength, and body composition
• Holding blood in the vessels — Spleen qi deficiency can manifest as easy bruising, heavy periods, and prolonged bleeding
• Lifting qi upward — the Spleen's "clear yang" rises to nourish the head; deficiency produces brain fog and mental fatigue
• Regulating fluids — the Spleen transforms fluids and prevents the accumulation of dampness

The Spleen thrives on warmth. It is described in the classical texts as preferring warm, cooked, moderate food eaten at regular intervals. The most important principle in Chinese dietary therapy is that the Spleen is warmed by warm food and cooled by cold food, and its function is optimised or impaired accordingly.

The Stomach — the body's compost heap

The Spleen does not work alone. Its partner in Chinese medicine is the Stomach, and understanding what the Stomach does gives the clearest picture of why cold raw foods cause so many problems. The Stomach in TCM is responsible for what the classical texts call "rotting and ripening" — the initial breakdown of food that must happen before the Spleen can transform it into qi and blood.

The best analogy for the Stomach is a compost heap. A good compost heap is warm — often noticeably warm to the touch, sometimes steaming in cold weather. That warmth is what drives decomposition. The microbes, enzymes, and biological processes that break down organic matter all depend on heat to work efficiently. A well-functioning compost heap turns garden waste into rich usable compost in weeks. A cold compost heap does not — it sits, it stagnates, it smells, and whatever is in it rots slowly and badly rather than breaking down cleanly.

The Stomach works exactly the same way. It must be kept warm to perform its rotting and ripening function. Gastric acid, digestive enzymes, and the muscular churning action that processes food all depend on the Stomach being at the right temperature. When cold food arrives in the Stomach, the temperature drops — the compost heap is cooled — and everything that should happen next slows down or stalls. Food sits. It doesn't break down properly. The Stomach has to spend energy warming the food before digestion can even begin.

Sustained over time, a chronically cooled Stomach produces recognisable symptoms:

• Stomach pain — particularly a dull, cold ache relieved by warmth (hot water bottle, warm drinks, warm food)
• Bloating and distension after meals — food is sitting rather than moving
• Nausea, particularly after cold foods or drinks
• Poor appetite or a sense that food "sits heavily"
• Burping and reflux — food not descending properly
• A sense of fullness long after eating
• Craving warm foods and drinks — the body signalling what it needs
• Stomach gurgling and watery sounds
• Undigested food in stool

Patients often describe stomach pain that comes on an hour or two after a cold meal and is eased immediately by a hot drink or hot water bottle on the abdomen. This is not a coincidence — it is the compost heap cooling, stagnating, and causing pain, then warming again and resuming function.

The Stomach and Spleen work as a pair: the Stomach performs the initial breakdown, the Spleen performs the transformation into qi and blood. Damage the Stomach's warmth and the whole system suffers. Damage the Spleen's yang qi and the whole system suffers. Cold raw foods damage both simultaneously, which is why the symptom picture can be so broad and so persistent.

Ginger — the classical remedy for a cold stomach

If the Stomach is a compost heap that needs warmth to function, then ginger is the most important food in the Chinese dietary pharmacy for restoring that warmth. Known in Chinese medicine as Sheng Jiang (fresh ginger, Zingiber officinale), ginger has been used for over two thousand years specifically to warm the Stomach, dispel cold, and stop the nausea and pain that result from cold foods. It appears in dozens of classical formulas and is one of the few herbs that also doubles as an everyday culinary ingredient — meaning anyone can use it at home without a prescription.

The actions Chinese medicine attributes to Sheng Jiang map directly onto the problems that cold raw diets produce:

• Warms the Stomach and disperses cold — directly reverses the compost heap cooling. Ginger restores the warmth that allows digestion to function.
• Stops nausea and vomiting — Sheng Jiang is one of the most important anti-nausea herbs in Chinese medicine, used for morning sickness, motion sickness, food poisoning, and nausea caused by cold foods. Modern research confirms this with strong clinical evidence.
• Descends rebellious Stomach qi — eases the reflux, burping, and hiccups that arise when Stomach qi rises instead of descending as it should
• Resolves dampness and phlegm — helps clear the sluggish congestion that builds up when Stomach function is cold and weak
• Neutralises the cooling effect of raw foods — added during preparation, ginger offsets the cold nature of many ingredients
• Resolves the toxicity of seafood — this is why sushi is traditionally served with pickled ginger, and crabs are cooked with fresh ginger in Chinese cooking; ginger warms what would otherwise be an excessively cold meal

Practical ways to use ginger daily:

• Fresh ginger tea — 3–5 slices of fresh ginger root simmered in water for 10 minutes, drunk warm. One or two cups daily, particularly with or after meals. The single most effective everyday intervention for a cold Stomach.
• Ginger added to cooking — sliced, grated, or chopped into stir-fries, soups, stews, rice, and cooked vegetables. Traditional Chinese cooking uses ginger in almost every savoury dish for exactly this reason.
• Ginger with raw or cold foods — if you do eat sushi, salad, or cold leftovers, include ginger. Pickled ginger with sushi is not decoration; it is medicine. A grated ginger dressing over a salad converts the dish from purely cooling to warming.
• Ginger first thing in the morning — a warm cup of ginger tea on waking gently stimulates digestive fire and prepares the Stomach for the day's meals. Add a little honey (but not lemon — lemon is cold) for taste.
• Ginger with nausea — fresh ginger tea, crystallised ginger, or ginger capsules (up to 1g daily) for morning sickness, motion sickness, or any nausea. See my article on acupuncture for morning sickness.
• Ginger in winter — particularly valuable during the cold UK winter, when the Stomach is most vulnerable. Daily ginger tea through autumn and winter supports digestion and immunity.

A note on different forms of ginger: fresh ginger (Sheng Jiang) is the everyday warming form most people should use. Dried ginger (Gan Jiang) is much hotter and stronger, reserved for more serious Yang deficiency patterns and prescribed in formulas rather than eaten casually. Ground ginger powder is weaker than fresh and less effective as a Stomach warmer. Crystallised ginger preserves much of the warming action but is high in sugar. For most people, fresh root ginger is the right choice.

Who should be cautious with ginger: those with strong internal heat signs (red face, hot flushes from yin deficiency, acid reflux from Stomach heat rather than cold, bleeding disorders, or peptic ulcers) should use ginger in smaller amounts or seek practitioner guidance. In pregnancy, up to 1g daily is considered safe and effective for morning sickness. For the average UK person with a cold Stomach from years of cold drinks and cold meals, daily fresh ginger tea is one of the simplest and most effective interventions available.

Why cold raw foods damage the Spleen and Stomach

When cold raw food enters the stomach, the body has to do two things before digestion can properly begin. First, it must warm the food to body temperature — approximately 37°C. Second, it must begin breaking down the tough fibrous structure of raw plant matter that cooking would otherwise have partially completed. Both processes require significant amounts of digestive energy — in TCM terms, Spleen yang qi.

The Chinese medicine metaphor for the Spleen is often a cooking pot. To transform food into qi and blood, the "pot" needs a fire beneath it — Spleen yang. Adding cold raw food to this pot is like pouring cold water into a pan that's trying to cook — the heat drops, the cooking slows, and extra fuel is needed to bring things back up to working temperature. Do this occasionally and there's no problem. Do it every day, at every lunch, over years, and the fire gradually weakens.

This depletion of Spleen yang over time produces a recognisable pattern:

• Sluggish digestion — food sits in the stomach for hours
• Bloating, particularly after meals
• Fatigue after eating — the body has to work too hard to digest
• Loose stools, undigested food visible in stool
• Cold hands and feet
• Weight gain despite eating moderately
• Fluid retention — puffy face in the morning, heavy legs
• Mental fogginess, particularly after meals
• Reduced appetite, or only wanting warm, heavy foods

Many patients describe these symptoms to their GP and are told their tests are normal. In Chinese medicine terms, they have classic Spleen yang deficiency with accumulated dampness — a pattern that responds well to treatment but is not helped by continuing to eat cold raw meals at lunch.

Dampness — the unwanted consequence

When the Spleen is overwhelmed and cannot transform food and fluids properly, dampness accumulates. Dampness in TCM is not a physical water logging but a functional state — a kind of metabolic sluggishness where fluids and substances the body should be processing instead sit and accumulate. This produces a characteristic constellation of symptoms:

• Physical heaviness — limbs feel heavy, head feels foggy
• Bloating and abdominal distension
• Sticky, sluggish bowel movements — or alternating loose and sluggish
• Fluid retention and oedema
• Weight gain, particularly abdominal, that doesn't respond to calorie restriction
• Excess mucus — chronic post-nasal drip, sinus congestion, phlegmy throat
• Skin problems — eczema, fungal infections, cystic acne
• Greasy hair and skin
• Vaginal discharge or urinary problems
• A thick, greasy coating on the tongue — the most reliable diagnostic sign

Once dampness is established, it becomes self-perpetuating. Dampness further impairs Spleen function, which in turn produces more dampness. Breaking this cycle requires both acupuncture and herbal treatment and dietary change. See my article on acupuncture for oedema for more on fluid metabolism in TCM.

Signs salads may be hurting you

Not everyone who eats salads develops problems. But if you regularly eat raw cold salads and notice any of the following, it's worth experimenting with changing your approach:

• You feel tired rather than energised after a "healthy" salad lunch
• You're bloated within an hour of finishing a salad
• You see pieces of vegetables (lettuce, tomato skin, corn) in your stool
• Your digestion was noticeably better before you started eating salads regularly
• Your hands and feet are often cold, particularly after meals
• You have loose stools several times a week
• You have gained weight despite eating what seems like a healthy diet
• You have chronic low-grade fatigue without another clear cause
• You have a thick white or yellow coating on your tongue
• You have IBS-type symptoms
• You have recurrent sinus congestion or phlegmy throat
• You feel worse in cold weather and better in warm weather

Who is most affected

Some people have stronger Spleen function than others — they can eat cold raw foods regularly and tolerate them well. Others are much more affected. Those most vulnerable include:

• Women generally — women have more yin and relatively less yang, and are generally more sensitive to cold foods
• Women during menstruation — when blood loss further depletes yang; cold foods during a period can noticeably worsen cramps and clots. See my article on what to eat during your period
• Pregnant women — the body is already doing significant transformational work
• Postpartum women — the first six weeks after birth are a critical period for warm nourishing food
• Older adults — yang qi declines with age
• Anyone with PCOS — typically involves significant phlegm-dampness
• Anyone recovering from illness — Spleen function is temporarily weakened
• Anyone with diagnosed IBS or digestive problems
• People who feel the cold easily
• People trying to lose weight — paradoxically, weight loss diets often emphasise salads but salads frequently worsen the fluid retention and metabolic sluggishness that drives resistant weight gain
• Anyone with chronic fatigue or burnout — Spleen qi is already compromised
• People from constitutionally "cold" body types in Chinese medicine terms

Conversely, some people — typically those with naturally hot constitutions, strong Spleen qi, and who live in hot climates — can tolerate raw cold foods well and even benefit from them. The challenge is that most of us are not this person, even though wellness culture assumes we are.

Climate matters — the UK context

Chinese dietary therapy is highly context-dependent. A raw salad on a 35°C summer day in a hot climate is very different from a raw salad on a cold grey November day in the UK. The body responds to external cold by conserving yang and warming the core; adding cold raw food to the mix in cold weather creates additional demand at precisely the wrong time. I cover this in more depth in my article Eating Right for Your Climate (PDF).

The UK climate is cold, damp, and variable — exactly the external conditions that TCM considers aggravating to Spleen yang. Eating cold raw foods in this climate, particularly in autumn, winter, and spring, places sustained demand on digestive function. This is one of the reasons the traditional British diet (which evolved over centuries in this climate) historically emphasised warm cooked vegetables, stews, soups, and slow-cooked dishes rather than raw plates. The modern shift toward salads as a year-round staple is a relatively recent import from warmer climates and ignores the climatic context.

Observing this in my clinic is straightforward: many patients feel better in summer without any change in their diet, and worse in winter. This isn't random — it reflects the body's seasonal relationship to external temperature and the appropriateness (or otherwise) of the food being consumed.

Better ways to eat vegetables

The solution is not to eat fewer vegetables — it is to eat them in ways the Spleen can process easily. Several approaches work well:

• Lightly steamed, stir-fried, or sautéed — preserves most nutrients while making the fibre significantly easier to digest. Steaming broccoli, carrots, green beans, kale, or spinach for 3–5 minutes turns a taxing meal into an easy one.
• Warming soups and stews — vegetable soups with root vegetables, bone broth bases, warming spices (ginger, cumin, cinnamon), and slow cooking are ideal Spleen food. A bowl of homemade vegetable soup for lunch genuinely nourishes rather than drains.
• Roasted vegetables — trays of roasted roots, squashes, and brassicas are warm, nourishing, and digestion-friendly.
• Grain bowls with warm components — brown rice, quinoa, or warm grains as a base, topped with cooked vegetables, protein, and a warm dressing.
• Warm salads — if you want the salad format, many cuisines have warm salads. Lightly wilted spinach with warm dressing, roasted vegetable salads, warm grain and vegetable combinations all work well.
• Let raw ingredients warm to room temperature — if you do eat raw, don't eat straight from the fridge. Let tomatoes, cucumber, or salad greens reach room temperature for at least 30 minutes first.
• Add warming spices — black pepper, ginger, cumin, cinnamon, chilli (in moderation), mustard. These counteract the cooling nature of the base ingredients.
• Drink warm water or ginger tea with meals — rather than iced water, which compounds the cold challenge to digestion.
• Cook the base, garnish with a little raw — a cooked grain and vegetable bowl with some chopped fresh herbs or a small amount of raw garnish is well-tolerated by most people.

When salads are fine

Salads aren't a universal problem, and many people tolerate them without difficulty. A raw salad is reasonable when:

• You have a strong, warm constitution with no signs of Spleen qi deficiency
• You are eating in genuinely hot weather where external heat supports digestion
• It's a small side alongside warm cooked food rather than the whole meal
• The ingredients are at room temperature rather than cold from the fridge
• You include warming elements — roasted nuts or seeds, olive oil, warming spices, grilled protein
• You feel energised rather than drained afterwards
• Your digestion is strong and you have no signs of dampness or Spleen deficiency

The principle in Chinese dietary therapy is not strict rules but attention to your own response. If salads leave you feeling energised, digestion is smooth, and you have no dampness signs, there's no reason to stop. If the opposite, the observation is worth taking seriously.

Frequently asked questions

Are raw vegetables unhealthy?

No — vegetables themselves are essential to good health. The TCM concern is with eating them cold and raw in large quantities, particularly in cold weather, particularly by people whose digestive function is already compromised. Light cooking (steaming, sautéing, soup) makes vegetables more accessible to the digestive system without meaningfully reducing their nutritional value.

What about the nutrients lost through cooking?

Some nutrients (particularly water-soluble vitamins like vitamin C and some B vitamins) are reduced by cooking. Others (including lycopene in tomatoes, beta-carotene in carrots, and various antioxidants) become significantly more bioavailable when cooked. The net picture is more complex than "raw equals more nutrition." The bigger factor, from a TCM view, is what your body can actually absorb and use — heavily raw diets often produce poor absorption because the Spleen is overwhelmed.

Why do I feel fine eating salads?

Some people genuinely tolerate salads well — those with strong Spleen qi, warm constitutions, and good digestive fire. If you feel energised after eating salads, digest them easily, and have no bloating, fatigue, or loose stools, there's no TCM reason to stop. The advice in this article is for people whose bodies are signalling a problem.

What if I eat salad for weight loss?

Ironically, salad-heavy diets often impair the weight loss they aim for. Spleen qi deficiency with dampness — the TCM pattern that cold raw diets commonly produce — is directly associated with the abdominal weight gain, fluid retention, and metabolic sluggishness that drive resistant weight gain. Many patients find that switching to warm cooked vegetables, soups, and moderate balanced meals leads to better weight loss outcomes than salad-based diets. See my article on Chinese medicine for weight loss.

Can I eat salads in summer?

In genuinely hot weather, salads are better tolerated — the external warmth supports digestion, and lighter cooler foods match the body's summer needs. UK summers provide brief windows where this applies. In spring, autumn, and winter — the majority of the UK year — warm cooked food is more physiologically appropriate.

What about raw juices and smoothies?

Cold smoothies and juices, particularly with frozen fruit or ice, present the same challenge as salads in intensified form — large volumes of cold raw material delivered rapidly to a digestive system asked to process them quickly. Many people find smoothies produce bloating, cold hands, and fatigue that they don't associate with the smoothie. Warmer options (smoothies made with room-temperature ingredients, or porridge with stewed fruit and warming spices) are gentler on digestion.

Is this the same as the "gut health" advice?

There's overlap. Much modern gut health advice emphasises cooked fermented foods, bone broths, warming spices, and regular warm meals — which maps onto TCM Spleen-supportive principles closely. The frameworks arrive at similar conclusions from different starting points.

Should I never eat salads again?

Not at all. This is about proportion, context, and attention to your own response. Many people can include some raw salad in a balanced diet without problems, particularly as a side to warm cooked food, particularly in warm weather, particularly if digestion is strong. The issue is treating raw cold salads as the default virtuous meal regardless of body constitution, climate, and digestive function.

To discuss digestive problems, bloating, or dietary advice, contact me or book a consultation at my Wokingham, Berkshire clinic.

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