J. Nutrition, 131:3151S-3152S, 2001
Morinda citrifolia and Cancer Prevention
Wang, M-Y., Su,  C., Nowicki, D., Jensen, J., Anderson, G.

The authors report laboratory evidence supporting the possible prevention of cancer in rats by noni juice. They were able to demonstrate a reduction of DNA adduct formation in the heart, lung, liver, and kidney of laboratory female rats by 26%, 41%, 42%, and 80%, respectively. More dramatic results were reported for male rats. The authors theorize that the blockage of DNA adducts (compounds that attach themselves to DNA, which scientists believe are then involved in carcinogenesis) is largely responsible. Additionally, strong antioxidant activity (scavenging of free radicals) of noni juice was also demonstrated.