acai berries are an antioxidant, removes all the waste and icky stuff your body doesnt need, therefor your body works better.

be careful if order acai berry, some of them are scam

It's a natural food, the FDA has no oversight unless they make medical claims. Acai has obvious benifits and potential drawbacks. Very little credible testing has been done on the fruit. Most importantly it is not a magical weight loss berry. You could eat a diet of 90% raw Acai fruit and still not lose a pound if you're not physically active and eating a responsible diet.

I did the acai berry and colon cleanse for 2 weeks it was awful and made no difference to my weight just had me running to the loo. I am now doing the Bodytrim system which is great, easy to stick to and works