Hermetica Superfood Encyclopedia
The Short Answer
Tree lettuce (Lactuca taraxacifolia) contains apigenin and phenolic compounds that induce cancer cell apoptosis through both extrinsic and intrinsic pathways, upregulating caspase-3 and TNF-α. The plant also inhibits cytochrome P450 enzymes CYP1A2, CYP2C9, and CYP2C19 by 50-70%, affecting drug metabolism.
CategoryLeaf & Herb
GroupLeaf/Green
Evidence LevelModerate
Primary Keywordtree lettuce benefits
Synergy Pairings4
Tree Lettuce — botanical close-up
Health Benefits
Reduces oxidative stress through high levels of phenolic compounds and flavonoids.
Modulates inflammatory responses via its rich content of bioactive compounds
Supports digestive health by promoting enzyme activity and balancing gut flora
Aids in blood sugar regulation through specific bioactive compounds
Contributes to cardiovascular health by supporting healthy circulation and lipid profiles.
Origin & History
Natural habitat
Tree Lettuce (*Lactuca indica*) is an herbaceous plant native to East Asia, particularly China, Japan, and Korea, thriving in temperate climates along forest edges and clearings. It is valued in functional nutrition for its potent antioxidant and anti-inflammatory properties.
“Tree Lettuce (*Lactuca indica*) has been an integral part of East Asian culinary and medicinal traditions for centuries, particularly in Japan and Korea. It was historically consumed in traditional dishes like Japanese salads and Korean soups, and used in traditional medicine to treat digestive issues, inflammation, and infections.”Traditional Medicine
Scientific Research
Preliminary in vitro and animal studies indicate *Lactuca indica*'s antioxidant and anti-inflammatory potential, primarily attributed to its phenolic and flavonoid content. Further research, including human clinical trials, is needed to fully elucidate its efficacy in digestive health, blood sugar regulation, and cardiovascular support.
Preparation & Dosage
Traditional preparation
Common forms
Fresh leaves, powder, functional food ingredients.
For fresh leaves
Incorporate into salads, stir-fries, or soups.
Dosage
1–2 servings (e.g., 1-2 cups of fresh leaves) per day for digestive and anti-inflammatory support.
General
Modern applications include use in herbal teas and natural remedies.
Nutritional Profile
- Dietary fiber
- Vitamin A, Vitamin C
- Calcium, Potassium
- Phenolic compounds, Flavonoids (quercetin, kaempferol)
How It Works
Mechanism of Action
Apigenin induces apoptosis via extrinsic pathways by upregulating caspase-3, caspase-8, and TNF-α mRNA, and through intrinsic pathways by elevating cytochrome c and Bax proteins. The extract causes G0-G1 cell cycle arrest, downregulates cell cycle genes, and significantly inhibits cytochrome P450 enzymes CYP1A2, CYP2C9, and CYP2C19. Phenolic compounds including chlorogenic acid and ferulic acid contribute to antioxidant activity through free radical scavenging mechanisms.
Clinical Evidence
Current evidence is limited to in vitro and cell culture studies, with no human clinical trials reported for Lactuca taraxacifolia. Laboratory studies demonstrate 50-70% reduction in CYP1A2 and CYP2C19 expression and inhibition of cancer cell growth in WHC01 cell lines. Animal studies suggest potential antioxidant and anti-inflammatory effects, but quantitative clinical efficacy data in human subjects remains unavailable. The evidence base requires expansion through controlled human trials to validate therapeutic applications.
Safety & Interactions
Tree lettuce significantly inhibits cytochrome P450 enzymes CYP1A2, CYP2C9, and CYP2C19 by 50-70%, potentially altering metabolism of medications including caffeine, warfarin, and omeprazole. High iodine-biofortified varieties may increase reactive oxygen species production, though systemic effects remain unclear. No specific contraindications, toxicity data, or adverse events have been documented in available research. Safety during pregnancy and lactation has not been established, requiring caution in these populations.
Synergy Stack
Hermetica Formulation Heuristic
Mineral cofactor
Gut & Microbiome | Immune & Inflammation
Also Known As
Lactuca taraxacifoliaAfrican lettuceWild lettuce
Frequently Asked Questions
How does tree lettuce affect drug metabolism?
Tree lettuce inhibits key liver enzymes CYP1A2, CYP2C9, and CYP2C19 by 50-70%, which can slow the breakdown of medications like caffeine, warfarin, and proton pump inhibitors. This interaction may increase blood levels of these drugs and their effects.
What is the difference between tree lettuce and regular lettuce?
Tree lettuce (Lactuca taraxacifolia) is a wild African species used medicinally, containing higher concentrations of apigenin and specific phenolic compounds. Regular lettuce (Lactuca sativa) is the common cultivated variety with different bioactive profiles including chlorogenic acid and carotenoids like lutein.
Is there clinical evidence for tree lettuce benefits?
Currently no human clinical trials exist for tree lettuce, with evidence limited to laboratory cell culture and animal studies. While in vitro studies show promising antioxidant and anti-cancer cell effects, human efficacy and safety data are needed.
What are the main active compounds in tree lettuce?
The primary bioactive compound is apigenin, a flavonoid that triggers cell death pathways in cancer cells. Tree lettuce also contains various phenolic acids including chlorogenic acid, ferulic acid, and protocatechuic acid that contribute to antioxidant activity.
Can tree lettuce cause side effects?
While generally considered safe as a food plant, tree lettuce can significantly alter drug metabolism through enzyme inhibition. High iodine varieties may increase oxidative stress, and safety during pregnancy or with chronic medication use has not been established.
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