Here is one study but there are many more like it. I picked this one since it seemed to do the most thorough comparison of curcumin with the effects of some SSRI drugs, and as you can see they were pretty similar:
http://www.ncbi.nlm.nih.gov/pubmed/17942093
In addition, ginger and curcumin are first cousins and there are studies on ginger showing the same effect on serotonin receptors with the notable exception of ginger being an antagonist to the 5-HT3 receptors, which would explain its beneficial effects on the GI tract.
Thoughts/comments?
http://www.ncbi.nlm.nih.gov/pubmed/17942093
In addition, ginger and curcumin are first cousins and there are studies on ginger showing the same effect on serotonin receptors with the notable exception of ginger being an antagonist to the 5-HT3 receptors, which would explain its beneficial effects on the GI tract.
Thoughts/comments?