What is in the Nature article is a bit different, it is that it will be, first difficult to know which chemical is really causing the effect that is seen, as cu

What is in the Nature article is a bit different, it is that it will be, first difficult to know which chemical is really causing the effect that is seen, as curcumin is often composed of many molecules, second that it will be difficult to create a industrial drug from curcumin.So it argues to not spend money on another curcumin study when there are already around thousand. It would be a waste of money. But if I am not wrong, the Nature article did not say curcumin has no effect, on contrary it has too many to know exactly what is going on.