Compound or practice · Supplement
Green Coffee Extract
A chlorogenic-acid weight-loss fad built on a retracted study and caffeine.
- Overall grade
- Grade D
- Last revised
- 2
- graded outcomes
- 0
- references listed
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
1 at grade C · 1 at grade D — 2 graded rows
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.
- Blood pressure / glucoseEvidence grade C
Minor
Smallmixed
- Weight lossEvidence grade D
Key study retracted
Triviallow
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Blood pressure / glucose (grade C); Weight loss (grade D).
The evidence in words
What it is
Green (unroasted) coffee bean extract is standardized to chlorogenic acid and marketed for weight loss and glucose.
How it works
Chlorogenic acid may modestly affect glucose absorption and metabolism; the extract also contains caffeine.
What the evidence shows
The famous supporting trial was retracted, and better studies show at most trivial weight effects. Small blood-pressure and glucose signals exist. The weight-loss reputation is not earned.
Safety & interactions
Generally safe; caffeine content and mild effects.
Bottom line
A discredited weight-loss story. Any effect is tiny and partly caffeine. Skip it.
Related reading
Entries that share this one's tags or conditions.
- CLA (Conjugated Linoleic Acid) for Fat lossEvidence grade D — Not meaningfulEvidence grade D
- ForskolinA cAMP-raising herb marketed hard for fat loss with unconvincing human data.Evidence grade D
- Forskolin for Fat lossEvidence grade D — Weak, unreplicatedEvidence grade D
- Garcinia Cambogia (HCA)A perennial TV weight-loss star that fails in controlled trials — and carries a rare liver risk.Evidence grade D
Sources
This entry lists no references of its own.
Last revised . A grade is this entry's reading of the evidence, not medical advice.