Evidence brief · Supplement
Green Tea Extract (EGCG) for Body weight
Evidence grade C — Minor
- Overall grade
- Grade C
- Last revised
- 1
- graded outcome
- 0
- references listed
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
1 at grade C — 1 graded row
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- Body weightEvidence grade C
Minor
Smallmixed
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Body weight (grade C).
The evidence in words
The verdict
For body weight, Green Tea Extract (EGCG) earns evidence grade C (small effect, mixed consistency) — the evidence is limited or mixed. Minor
How it might work
Catechins have antioxidant activity and modestly influence fat oxidation and endothelial function, often synergizing with the caffeine present.
How to use it
Prefer brewed green tea. If using extract, keep EGCG modest (≤300–400 mg/day), take with food, and stop if any signs of liver trouble.
Safety & cautions
Brewed tea is safe. Concentrated extracts carry a rare hepatotoxicity risk; avoid high fasted doses.
Bottom line
Drink the tea for a pleasant, mild metabolic nudge. Be cautious with concentrated EGCG capsules — the weight-loss upside is small and the rare liver risk is not.
How it is used
As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.
- Prefer tea
- Brewed tea; if extract, ≤300–400 mg EGCG with food.
Goes with
- Green Tea Extract (EGCG)Read the full Green Tea Extract (EGCG) monographEvidence grade C
Related reading
Entries that share this one's tags or conditions.
- Green Tea Extract (EGCG) for Liver injury (high-dose extract)Evidence grade C — Rare but seriousEvidence grade C
- Cinnamon for Fasting glucoseEvidence grade C — InconsistentEvidence grade C
- Green Tea Extract (EGCG): dosage and how to take itBrewed tea; if extract, ≤300–400 mg EGCG with food.Evidence grade C
- Green Tea Extract (EGCG): side effects, safety & interactionsBrewed tea is safe. Concentrated extracts carry a rare hepatotoxicity risk; avoid high fasted doses.Evidence grade C
Sources
This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.
Last revised . A grade is this entry's reading of the evidence, not medical advice.