Take curcumin papers with a pinch of salt. It's a pan assay interference compound (PAIN), prone to misleading results. Pubmed is full of thousands of papers claiming it solves all manner of medical problems, leading it to be dubbed an 'improbable natural panacea'.

See this article, by the same author as it happens.

https://blogs.sciencemag.org/pipeline/archives/2017/01/12/cu...