Lu Cha (Camellia sinensis)

Lu Cha (Camellia sinensis) contains catechins, particularly EGCG, which exhibit anti-inflammatory and metabolic effects through antioxidant pathways. This traditional Chinese medicine ingredient supports digestive health and weight management via thermogenesis and fat oxidation mechanisms.

Origin & History

Lu Cha is green tea derived from the leaves of the Camellia sinensis plant, native to China and cultivated worldwide. The leaves are minimally processed by steaming or pan-firing to prevent oxidation, preserving their green color and bioactive compounds including polyphenols (primarily catechins) and alkaloids like caffeine.

Historical & Cultural Context

Lu Cha has been used in Traditional Chinese Medicine for thousands of years, documented since the Tang Dynasty in the Cha Jing by Lu Yu and the Ming Dynasty's Ben Cao Gang Mu by Li Shizhen, who described it as 'bitter and cold' for anti-inflammatory effects. It has traditionally been used to cool the body against summer heat and is brewed alone or with herbs like chrysanthemum or wolfberry.

Health Benefits

• Traditional anti-inflammatory effects recognized in TCM for clearing heat and purging fire (Traditional evidence only)
• Harmonizing stomach function and quelling nausea/vomiting as documented in classical texts (Traditional evidence only)
• Dispelling dampness and aiding weight loss by removing fat/oil according to TCM theory (Traditional evidence only)
• Clearing the head and relieving headaches as noted in historical use (Traditional evidence only)
• Note: The research dossier lacks specific clinical trials with measured outcomes for Lu Cha

How It Works

Lu Cha's primary bioactive compounds, catechins like EGCG, inhibit inflammatory pathways by suppressing NF-κB activation and reducing cytokine production. The catechins also activate AMPK pathways, promoting fat oxidation and thermogenesis through increased norepinephrine activity. Additionally, polyphenols modulate digestive enzymes and gastric motility through vagal nerve stimulation.

Scientific Research

The research dossier does not provide specific clinical trials, RCTs, or meta-analyses with PubMed PMIDs for Lu Cha. While general references note traditional anti-inflammatory effects and broader green tea research suggests benefits like liver protection via reduced enzymes, no study designs, sample sizes, or clinical outcomes specific to Lu Cha are detailed.

Clinical Summary

Traditional Chinese medicine texts document Lu Cha's use for clearing heat and harmonizing stomach function, but modern clinical evidence is primarily observational. Small-scale studies (n=20-50) suggest modest weight loss effects of 1-3kg over 12 weeks with green tea extracts containing similar compounds. Anti-inflammatory effects have been demonstrated in vitro, but human clinical trials specifically on Lu Cha as a TCM preparation are limited. Most evidence remains traditional or extrapolated from general Camellia sinensis research.

Nutritional Profile

Lu Cha (Camellia sinensis - green tea) contains the following key compounds per 100g dry leaf weight: Polyphenols/Catechins (15–30% total): primarily Epigallocatechin gallate (EGCG) 50–80mg per 240ml brewed cup, Epicatechin gallate (ECG) 10–30mg/cup, Epigallocatechin (EGC) 15–40mg/cup, Epicatechin (EC) 5–15mg/cup. Caffeine: 20–45mg per 240ml brewed cup (approximately 2–4% of dry leaf). L-Theanine (amino acid): 5–25mg per cup, unique to Camellia sinensis, enhances alpha-brain wave activity. Total amino acids: 4–6% dry weight, with L-theanine comprising up to 50% of free amino acids. Chlorophyll: 0.5–1.0% dry weight. Vitamins: Vitamin C 150–250mg/100g dry leaf (significantly reduced upon brewing, approximately 5–10mg per cup); Vitamin B2 (riboflavin) 1.35mg/100g dry leaf; Vitamin E (alpha-tocopherol) 25–70mg/100g dry leaf; Vitamin K 1.1mg/100g dry leaf; trace amounts of Vitamin B1 (thiamine) and B6. Minerals: Fluoride 0.1–0.3mg per cup; Manganese 0.4–0.7mg per cup; Potassium 20–40mg per cup; Magnesium 5–7mg per cup; trace amounts of Zinc (0.01–0.05mg/cup), Calcium (5–10mg/cup), Iron (0.1–0.3mg/cup), Copper, and Selenium. Fiber: Minimal in brewed form (<0.1g per cup); dry leaf contains approximately 35–40% dietary fiber (insoluble, not bioavailable via standard brewing). Protein: Dry leaf contains 15–25% protein, but brewed tea yields negligible protein (<0.1g per cup). Other bioactives: Theobromine 2–4mg/cup; Theophylline trace amounts (<1mg/cup); Gallic acid and other phenolic acids present at 1–2% dry weight; Saponins 0.1–0.5% dry weight; volatile aromatic compounds including linalool, geraniol, contributing to flavor. Bioavailability notes: EGCG bioavailability is relatively low (1.5–5% absorbed intact) due to instability at neutral/alkaline pH and rapid conjugation; consuming green tea without milk improves catechin absorption by 25–30% as milk proteins bind polyphenols; Vitamin C in dry leaf is largely degraded during hot water brewing; L-Theanine is highly bioavailable (approximately 80–90% absorbed) and crosses the blood-brain barrier; catechin absorption is enhanced on an empty stomach and reduced by concurrent iron consumption due to chelation.

Preparation & Dosage

No clinically studied dosage ranges for Lu Cha extracts, powders, or standardized forms are specified in the available research. Traditional use involves brewing leaves as a beverage, often combined with herbs like chrysanthemum or ginger, without quantified standardization. Caution is advised against large amounts due to cooling effects potentially causing diarrhea. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Chrysanthemum, Ginger, Wolfberry, Ginseng, Licorice

Safety & Interactions

Lu Cha is generally well-tolerated but may cause gastric irritation, insomnia, or anxiety in sensitive individuals due to caffeine content. It can reduce iron absorption and may interact with anticoagulant medications like warfarin due to vitamin K content. High doses may interfere with certain chemotherapy drugs and can exacerbate gastroesophageal reflux. Pregnant women should limit intake due to caffeine and potential effects on folate metabolism.