I myself use this yellow (indian and middle-eastern) spice whenever I make fried rice, exactly one teaspoonful every time. It is colorful, and testes not bad. Some people don't like it, but I do.
Now for a biochemistry researcher to come to the public to promote it as cancer-curing medicine, and especially when dressed as "PROFESSOR OF CANCER MEDICINE" to recommend to the public to take 8 grams of purified curcumin (300 teaspoons tumeric powder) to combat cancer, AFTER the NIH phase II clinical trial with pancreatic cancer FAILED - there is no other word to describe him, other than 'dispicable', and 'criminal'. The guy had zero training in medicine, all he had was some 'masters' from India, and a phD from california in the 1970s. He published totally fabricated articles on JBC, as far as I have known him. One of his fabrification resulted in a loss of thousands $ and months of our lab's time at washington university. Giving credit to this guy has disastrous consequence.
8 grams of purified curcumin per day, is dangerous and is of no use. Profiting from end-stage cancer patients is a God damn sin.