"Companies used the fact that Oprah and Memhet Oz talked about the acai berries on their shows to create the impression that Oprah and Oz were selling these products. And endorsing them," said David Schardt, Center for Science in the Public Interest.
Not only were they not endorsing the products, but The Center for Science in the Public Interest says there is no evidence acai actually helps you lose weight.
"It's been very hurtful, because many Americans have seen images of me, and Oprah, and others supporting, it would appear, products that actually don't work in the ways that are described." said Dr. Oz. "If you see my picture next to something that is being sold, that is a supplement I did not endorse it, because I have no relationships at all with any of these companies."