Turmeric Curcumin
Turmeric comes from the underground stem of Curcuma longa, a member of the ginger family. Curcumin is its main yellow compound, alongside related curcuminoids.
Also listed as Turmeric Root Extract 30:1, Turmeric extract, Curry Extract, Curcuma
What does the knee evidence show?
A systematic review of 10 randomized trials found encouraging results for pain and physical function in knee osteoarthritis. Three trials compared turmeric preparations with nonsteroidal anti-inflammatory drugs and found no difference in the measured outcomes; that small comparison does not establish that every turmeric product is equivalent to medication. The review could not identify an optimal dose or formulation. 1
Pain relief is plausible and supported by positive trials, but differing products and study limitations prevent a single reliable treatment claim. 1 2
What does “anti-inflammatory” mean here?
A meta-analysis of 66 adult randomized trials found reductions in several blood markers, including C-reactive protein, and changes in measures of oxidation and antioxidant activity. These findings support a biological effect under the studied conditions. They do not by themselves show fewer infections, relief of every inflammatory illness or longer life. 3
Blood-marker changes are promising, but their practical meaning depends on the illness and outcome being treated. 3
Several laboratory measures improved; a general health benefit cannot be read directly from those numbers. 3
This analysis measured biomarkers, not whether people caught fewer infections. 3
Can curcumin soothe irritable bowel symptoms?
The IBS review pooled three trials with 326 participants. Symptoms favored curcumin numerically, but the overall difference from placebo was not statistically significant, and results varied substantially between studies. That leaves a useful research question, rather than a dependable remedy for abdominal discomfort or altered bowel habits. 4
The pooled human trials did not establish a clear IBS symptom benefit. 4
Why are memory and mood being studied?
In 60 healthy adults aged 60–85, a four-week trial of a specific solid-lipid curcumin preparation reported improvements in selected memory, fatigue and mood measures. Another trial followed 40 adults without dementia for 18 months and found benefits on some memory and attention tests with a different preparation. Small, product-specific studies are encouraging, but they cannot establish treatment for persistent brain fog or prevention of dementia. 5 6
A fatigue signal in a small study needs confirmation in people seeking help for everyday low energy. 5
Selected cognitive tests are not the same as a demonstrated treatment for persistent brain fog. 5 6
Mood and responses to a laboratory stress task improved in one trial; a durable benefit for chronic stress remains uncertain. 5
Can the same product help and harm the liver?
NCCIH describes early research suggesting improvements in some measures of nonalcoholic fatty liver disease, with uncertainty about which outcomes improve consistently. It also reports liver injury with some highly absorbable products. A preliminary benefit in one setting does not cancel a safety signal in another. 2
Fatty-liver research remains preliminary, and curcumin should not be presented as a liver cleanse. 2
Effects by health goal
Open an effect to see the studies behind its rating. Bars show the size of the effect; the letter grades the evidence.
Gut Health1 effect
Longevity1 effect
Bone & Joint1 effect
Immune Support1 effect
Stress & Mood1 effect
No study is linked to this rating.
Organ Function1 effect
No study is linked to this rating.
Cognition2 effects
No study is linked to this rating.
Other effects1 effect
All studies
14 publications are linked to Turmeric Curcumin, newest first.