Pu-erh is a fermented dark tea studied for modest effects on weight, blood fats, and blood sugar. Its fermentation pigment appears to lower cholesterol through the gut. Animal evidence is strong but human data are thin, so expectations should stay modest. Main cautions are caffeine, reduced iron absorption, and contamination from poor storage. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Total cholesterol | < 200 mg/dL (functional < 180) | Primary lipid endpoint pu-erh may influence |
| LDL cholesterol | < 100 mg/dL (functional < 80 for higher-risk) | Main cholesterol fraction targeted by the bile-acid mechanism |
| HDL cholesterol | > 50 mg/dL (women), > 40 (men); functional > 60 | Protective fraction; context for overall lipid change |
| Triglycerides | < 100 mg/dL (conventional < 150) | Sensitive to diet and metabolic status |
| Fasting glucose | 70–90 mg/dL (conventional < 100) | Tracks the post-meal glucose-blunting mechanism |
| HbA1c | < 5.4% (conventional < 5.7%) | Longer-term blood-sugar control |
| Body weight / BMI | BMI 18.5–24.9 (individualized) | Primary endpoint in the main human trial |
| Ferritin / iron studies | Ferritin ~50–150 ng/mL | Detects tannin-related iron-absorption impact |
| Blood pressure | < 120/80 mmHg | Caffeine can transiently raise BP |
Cadence: Baseline before starting, then at ~3 months, then every 6–12 months