Turmeric / Curcumin
Supplements · Cardiovascular & Anti-Inflammatory Herbs · Supplement, Typed Supps
Barely absorbed at all on its own.
Stage by stage
- Intake (Capsule or extract): Curcumin is poorly absorbed alone — much of a dose passes through unchanged.
- Small intestine (Needs a boost): Piperine (black pepper extract) or dietary fat significantly increases how much is absorbed.
- Bloodstream (Brief circulation): Whatever is absorbed circulates briefly before being processed by the liver.
- Tissues (Anti-inflammatory activity): Has antioxidant, anti-inflammatory activity in tissues, though blood levels drop quickly.
What the evidence supports
- Reducing knee osteoarthritis pain — moderate evidence. Several trials found it comparable to NSAIDs for pain relief, though trials are mostly small and short with variable formulations.
- Lowering inflammatory markers — moderate evidence. Reasonably consistent effect on blood markers. Whether that translates to clinical outcomes is a separate question.
- Preventing or treating cancer — insufficient evidence. Extremely well studied in cell cultures and extremely poorly supported in humans. Curcumin is a notorious source of promising lab results that do not survive clinical trials.
- Improving mood or cognition — limited evidence. A few small trials with modest results. Nowhere near established.
Typical dose
500–1,000 mg daily of curcumin extract, usually with piperine or a phospholipid to aid absorption
Upper limit: No established UL. Doses used in trials range widely, and the culinary spice is a much smaller amount
Timing
Ideally with piperine or a fat-containing meal.
Time to effect
- Days: Absorption improves with the right formulation.
- Weeks: Reported inflammation-related benefits in studies.
Medication interactions
- Anticoagulants and antiplatelets: May add to bleeding risk; stop before scheduled surgery. (moderate)
- Any drug with a narrow therapeutic window: Piperine inhibits the enzymes and transporters that clear many medicines, raising their blood levels unpredictably. (high)
- Diabetes medication: May lower blood sugar additively. (moderate)
Common myth
“Turmeric supplements work as well as curcumin studies show.” In reality: Most positive research uses concentrated, absorption-enhanced extracts — not turmeric spice.
Food sources
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