Curcumin
Polyphenol from turmeric root. Strong anti-inflammatory and neuroprotective data — but standard turmeric powder is nearly useless. The formulation is the entire game.
What it is
Curcumin is the primary curcuminoid in turmeric (Curcuma longa), comprising roughly 2-5% of the dried root. Plain curcumin is extensively metabolized by the liver and poorly absorbed — plasma levels from standard turmeric are barely detectable. Enhanced formulations (Meriva phytosome, Longvida SLCP, Theracurmin nanoparticle, BCM-95) raise bioavailability 10-30x.
How it works
Inhibits NF-κB signaling (a master regulator of inflammatory gene expression). Crosses the blood-brain barrier in bioavailable forms and reduces microglial activation — chronic microglial activation is an early driver of cognitive decline. Also binds and destabilizes amyloid-beta plaques in vitro.
What the research says
Evidence strength is ranked against the total body of peer-reviewed research, not marketing claims.
Who it helps
Adults over 50 with low-grade chronic inflammation. People with joint pain. Anyone with a family history of Alzheimer's (small but suggestive long-term cognition data). Knowledge workers dealing with post-illness or post-burnout brain fog.
Who should skip it
People on blood thinners (curcumin has mild antiplatelet activity). People with gallstones or biliary obstruction (curcumin stimulates bile flow). Stop 1 week before surgery. Anyone on iron supplementation — curcumin chelates iron.
Typical dose
Dose depends entirely on formulation. Meriva: 500-1000 mg/day. Longvida: 400-1000 mg/day. Theracurmin: 180-360 mg/day. Standard turmeric powder at any dose: effectively zero plasma curcumin. Black pepper (piperine) boosts absorption of plain curcumin ~20x but irritates some stomachs.
How to take it
Take with a fat-containing meal. Choose a named enhanced formulation — Meriva, Longvida, Theracurmin, or BCM-95 — not generic 'turmeric 95% curcuminoids.' Give it 8 weeks minimum for cognitive or inflammation outcomes.
Common misuses
People take turmeric powder from the spice aisle and expect drug-like effects. Bioavailability is the constraint, not the dose. People take it without fat and waste the capsule. People pair it with iron supplements and wonder why their ferritin drops.
Where to buy
Browse Curcumin on Amazon
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