many times in-expensive herbs are not objected to scientific examinations because the companies can not get a patent and earn loads of dollars from it.. , but curcumin is healthy in many ways it seems. I found this article on curcumin
In humans there are problems with absorbing a high enough dose to have any effect so work is ongoing to try improve the delivery method. https://www.ncbi.nlm.nih.gov/pubmed/29404861