Fatty liver and Liver Dampness-Heat: NAFLD explained by TCM

Non-alcoholic fatty liver disease (NAFLD) has become in a few decades the most common hepatic condition worldwide, now affecting 25% of the adult population - one in four adults (Younossi et al., 2016, Hepatology). The majority of those affected are unaware of it: the liver does not cause pain. It silently accumulates triglycerides, progressively loses its capacity to regulate metabolism, and contributes to sustaining the vicious cycle of insulin resistance and systemic inflammation.

In TCM, Liver Dampness-Heat (Gan Dan Shi Re 肝胆湿热) describes with striking precision this congested liver, unable to fulfil its function of ‘free circulation’. And the strategies of both systems converge remarkably.

Fatty liver: the overloaded liver

Mechanisms of hepatic lipogenesis

The liver receives nutrients absorbed by the intestine directly via the portal vein. In a healthy person, dietary fats are transformed into lipoproteins (VLDL) and exported to tissues. Excess carbohydrates are either stored as hepatic glycogen (limited capacity of 100-120 g) or converted into fatty acids through de novo lipogenesis.

In insulin resistance, three sources feed steatosis:

• Hyperinsulinaemia directly activates de novo lipogenesis enzymes (notably SREBP-1c).
• The massive flux of free fatty acids released by dysfunctional visceral adipose tissue arrives directly at the liver via the portal vein.
• Excess fructose (fizzy drinks, industrial juices, syrups) is metabolised almost exclusively by the liver and converted directly into hepatic triglycerides - fructose is infinitely more lipogenic than glucose at equivalent doses.

From steatosis to NASH: the silent progression

Simple steatosis (fat accumulation without inflammation) is reversible. But when accumulation exceeds the adaptive capacity of hepatocytes, hepatic inflammation is triggered - this is non-alcoholic steatohepatitis (NASH). From there, progression to hepatic fibrosis, cirrhosis and potentially hepatocellular carcinoma is possible, though protracted.

The steatotic liver no longer properly fulfils its metabolic functions: gluconeogenesis is dysregulated (aggravating hyperglycaemia), VLDL production is increased (aggravating hypertriglyceridaemia), and detoxification is compromised.

Liver Dampness-Heat in TCM

When stagnant Dampness ignites

「

Dampness is heavy and viscous; Heat is agitated and rising. When they combine, they are difficult to separate, like oil mixed with flour.

」

In TCM, Dampness-Heat of the Liver and Gallbladder (Gan Dan Shi Re 肝胆湿热) corresponds exactly to hepatic steatosis with emerging inflammation. Stagnant Dampness (accumulated through Spleen deficiency or unsuitable diet) remains in the Middle Burner, gradually generates Heat through pathological fermentation, and this Dampness-Heat invades the Liver - the adjacent organ in the Five Elements framework.

Characteristic clinical picture

• Morning bitterness in the mouth: biliary reflux, inability of the Liver to ‘descend and release’ bile.
• Nausea, aversion to fatty foods: the overloaded liver can no longer properly metabolise lipids.
• Pain and distension of the hypochondria: projection zone of the Liver and Gallbladder.
• Dark, concentrated urine: overload of the elimination pathways.
• Sticky, malodorous stools: Dampness-Heat descending downwards.
• Slightly yellowish or oily complexion: saturation of the biliary elimination pathway.
• Tongue: red with a thick, greasy yellow coating, sometimes thicker in the centre.
• Pulse: slippery (Hua 滑) and rapid (Shuo æ•°), wiry (Xian 弦) if the Liver is heavily involved.

Convergent nutritional strategy

Foods to eliminate as a priority

Free fructose (fizzy drinks, industrial juices, glucose-fructose syrup): the absolute priority. Fructose is directly converted into hepatic triglycerides and is regulated by neither insulin nor leptin.

Alcohol: even in moderation, it aggravates intestinal permeability and increases hepatic endotoxaemia. Complete elimination for at least 3 months for Profile C.

Trans fats and omega-6-rich vegetable oils (sunflower, maize, soya): they promote hepatic lipid oxidation and inflammation.

Foods to prioritise

Aliment	Nature	Saveur	Méridiens	Actions	Précautions
Dandelion (Pu Gong Ying 蒲公英)	Cool	Bitter	Liver, Stomach	Biliary draining, hepatic anti-inflammatory, drains Liver Dampness-Heat	Tisane or leaves in salad - avoid with significant gallstones
Artichoke	Cool	Bitter	Liver, Gallbladder	Cynarin - activates bile secretion and reverses hepatic lipogenesis	Cooked or extract - 600 mg standardised extract/day
Black radish (Hei Luo Bo 黑萝卜)	Cool	Pungent	Liver, Lung	Powerful biliary drainage, Liver Dampness-Heat	Raw grated or juice - 1 tablespoon of juice before meals
Eggs (Dan 蛋)	Neutral	Sweet	Liver, Kidney	Choline - precursor of phosphatidylcholine, mobilises hepatic fats	Whole eggs - choline is in the yolk, 2-3 per day
Oily fish (sardines, mackerel)	Neutral	Sweet	Liver, Spleen	Omega-3 EPA/DHA - reduce hepatic de novo lipogenesis	3 portions per week minimum
Green tea (Lü Cha 绿茶)	Cool	Bitter, Sweet	Liver, Heart	EGCG - activates AMPK in the liver, reduces triglyceride accumulation	2-3 cups per day, not too strong, away from meals

Berberine: the quintessential anti-steatosis plant

Berberine is the most documented example of TCM-Science convergence in the field of hepatic steatosis. Extracted notably from Huang Lian (Coptis chinensis 黄连), it has been used for centuries in TCM to drain Dampness-Heat from the Intestines and Liver.

Its modern pharmacology is remarkable: it activates AMPK (the central enzyme of lipid metabolism), inhibits hepatic de novo lipogenesis (via SREBP-1c), improves insulin sensitivity and reduces hepatic inflammation. Three randomised clinical trials show a reduction in liver fat exceeding 30% after 12 weeks at 500 mg x 2 per day (Yan et al., 2015, Evidence-Based Complementary and Alternative Medicine).

Protocol: 500 mg berberine before the two main meals (500 mg x 2 = 1000 mg/day), taken 15-30 minutes before the meal for optimal absorption. To be taken for a minimum of 12 weeks.

FAQ

How long does it take to reduce hepatic steatosis?

Simple steatosis is reversible. Studies show a significant reduction in liver fat within 8 to 12 weeks with an adapted diet (eliminating fructose, reducing refined carbohydrates) and 16:8 intermittent fasting. Steatohepatitis (NASH) is slower to treat: 6 to 12 months of sustained dietary changes are necessary.

Can fatty liver heal without medication?

Yes, in the majority of simple steatosis cases, dietary changes alone (eliminating free fructose and alcohol, reducing refined carbohydrates, ensuring choline and omega-3 intake) enable complete regression. Advanced NASH with fibrosis requires specialised hepatological follow-up.

Are commercial liver supplements effective?

Most commercial ‘liver detox’ complexes contain insufficient doses for a clinical effect. The best-documented individually are: silymarin (milk thistle, 420-700 mg/day as standardised extract at 70-80%), berberine (1000 mg/day), and choline (500-1000 mg/day as phosphatidylcholine if dietary intake is insufficient).

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