" human liver cells in in vitro studies.65 A single confirmatory clinical (human) trial has been published in which a purple sweet potato concoction successfully dampened liver inflammation better than a placebo.66 When it came to suppressing the growth of human liver cancer cells in a petri dish,67 cranberries beat out the other most common fruits in the United States: apples, bananas, grapefruits, grapes, lemons, oranges, peaches, pears, pineapples, and strawberries. Other studies have found that cranberries are also effective in vitro "

― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease