http://www.ncbi.nlm.nih.gov/pubmed/22139433Positive study on 27 rabbits.
http://www.ncbi.nlm.nih.gov/pubmed/21569436Uncontrolled pilot study of 10 Adults showing preliminary benefits.
http://www.ncbi.nlm.nih.gov/pubmed/21486000Study of cultured mouse cells showing inhibition of mast cell activation (not a good thing?)
http://www.ncbi.nlm.nih.gov/pubmed/2147004214 Patient pilot study (uncontrolled) showing statistically significant pain reduction. MonaVie juice was used.
http://qjmed.oxfordjournals.org/content/102/5/341Antioxidants do not help with Acute Mountain Sickness.
http://jama.ama-assn.org/content/297/8/842High quality studies correlate antioxidants with higher rates of mortality - Meta-analysis.
http://www.sciencedirect.com/science/article/pii/S0531556510001282Hypothetically, antioxidants may decrease lifespan.
http://www.ncbi.nlm.nih.gov/pubmed/21411096Atheroprotective effects of acia juice in mice study.
http://www.ncbi.nlm.nih.gov/pubmed/21386979Acai hypothesized to have immune response in humans based on cell cultures
http://www.ncbi.nlm.nih.gov/pubmed/21147193Acai extract in cigarettes reduced harmful effects in mice.
http://www.ncbi.nlm.nih.gov/pubmed/20838232Acai helped to prevent metabolic syndrome in mice.
http://www.ncbi.nlm.nih.gov/pubmed/20452390MonaVie Acai Juice is non-toxic.
http://www.ncbi.nlm.nih.gov/pubmed/20232121Acai no more effective at preventing tumor growth in mice than other berries. No control.
Studies on cultured cells, mice, rabbits and even insects just doesn't cut it. The two positive studies I found that were done on humans were just pilots, so interesting but way too insubstancial to support any claims of efficacy.