iOnco
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Green Tea / EGCG

Camellia sinensis

Antioxidantstrong evidence

EGCG (epigallocatechin-3-gallate) inhibits multiple cancer signalling pathways, reduces angiogenesis, induces apoptosis, and shows activity against breast, prostate, colon, and lung cancers. High green tea consumption is associated with significantly lower cancer risk in epidemiological studies across Asian populations.

Medicinal Properties

AntioxidantAnti-tumourAnti-angiogenicImmunomodulatoryNeuroprotective
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Cancer Types Studied

BreastProstateColonLung

Recommended Dosage

3–5 cups green tea daily, or 400–800 mg decaffeinated EGCG extract.

Preparations

Brewed Green Tea

Steep 1–2 tsp loose leaf at 80°C for 2–3 minutes. Drink 3–5 cups daily. Do not add milk — binds catechins.

Matcha

1–2 tsp matcha whisked in warm water. Contains 10x more catechins than regular green tea.

NIH / PubMed Research

Links open on PubMed (National Library of Medicine). Research is ongoing — results may not reflect clinical use.

Cautions & Interactions

  • High caffeine — limit to 2–3 cups if caffeine-sensitive
  • EGCG supplements may stress liver at >800 mg/day
  • May interact with blood-thinning medications
  • Take supplements away from meals to avoid iron absorption interference

Informational only. Not medical advice. Consult your healthcare provider before use.