Curcumin for Cholesterol
Curcumin produces a small, fairly consistent reduction in LDL and total cholesterol in pooled trials, but the effect is far weaker than statins and no major regulator or lipid society endorses it for cholesterol. Treat it as a marginal add-on at best, not a replacement for proven therapy.
Why this grade7-layer evidence engine
The grade is held at weak/modest because the signal is real but small. Three meta-analyses converge on lower LDL and total cholesterol: an umbrella review of 64 RCTs (PMID 36058763, n=4,187) found LDL down about 7.8 mg/dL and triglycerides down 19 mg/dL, a dose-response meta-analysis (PMID 37230418, n=1,427) showed LDL down roughly 9.9 mg/dL, and a NAFLD meta-analysis (PMID 38232906, n=822) showed LDL down 5.8 mg/dL. Two small low-bias RCTs (PMID 35754684; PMID 31691723) agree, with LDL falling 8 to 12 mg/dL.
What caps the grade is magnitude, consistency, and quality. Effects are strongest in people with diabetes, metabolic syndrome, or fatty liver and weakest in healthy adults; HDL barely moves; and heterogeneity is high (I-squared over 75%) with mostly 8-to-12-week trials. A 6-to-12 mg/dL LDL drop is several-fold smaller than a low-dose statin, so the engine treats it as marginal rather than clinically decisive.
Authorities are split-to-negative, reinforcing caution. NIH/NCCIH says there is not enough evidence to conclude curcumin is beneficial for any health purpose, and Harvard Health states plainly that taking turmeric to lower cholesterol does not make sense; only Cleveland Clinic is cautiously positive, and major lipid societies stay silent. Safety matters too: EFSA set an intake limit of 3 mg/kg/day, and NHS guidance warns to avoid it with gallstones or liver/biliary disease, plus interaction risk with statins and anticoagulants that the target users often take.
Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditable▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.439
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (3 篇 > 0 negative)
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status