Green coffee extract, made from unroasted beans rich in chlorogenic acids, produces small but consistent improvements in body weight, blood pressure, fasting blood sugar, and total cholesterol. Benefits matter most for those starting above-optimal; in already-healthy people they are slight. Best understood as a low-cost, well-tolerated add-on rather than a primary tool. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Fasting blood glucose | 70–85 mg/dL | Tracks the extract's glucose-lowering effect |
| Fasting insulin | 2–5 µIU/mL | Detects improvement in insulin sensitivity |
| HbA1c | <5.4% | Captures sustained glucose effect over months |
| Blood pressure (systolic/diastolic) | <120/80 mmHg | Tracks the modest antihypertensive effect |
| Total cholesterol | 160–200 mg/dL | Monitors the small lipid effect |
| LDL cholesterol | <100 mg/dL | Detects any change in atherogenic lipids |
| Homocysteine | <8–10 µmol/L | Surveillance for chlorogenic acid's potential homocysteine-raising effect |
| hs-CRP | <1.0 mg/L | Tracks possible anti-inflammatory effect |
Cadence: Baseline, at ~4–8 weeks, then every 3–6 months if use continues; blood pressure more frequently early on if combined with antihypertensives