Investigators at the National Institute on Aging in Baltimore, MD provided acai berry pulp to fruit flies. The amount was 2 percent of their diet. Acai supplementation increased the lifespan of female flies fed a high fat diet compared to the non-supplemented control. They conclude, "Acai has the potential to antagonize the detrimental effect of fat in the diet and alleviate oxidative stress in aging."
Comments: I am not sure if humans added acai or other berries to their diet they would live longer, but this is quite a promising finding and encourages me to either add more berries to my diet and / or take one or two acai or other berry extract capsules most days of the week. Thus far we have not had feedback of any side effects associated with such supplementation. For more details of this study, see http://www.raysahelian.com/acaiberry.html