theCardiffGiant replied: "It does not work. Any effects are psychological, like placebo (sugar pills). If you believe that something you're doing is healthy, and if you want to be healthy, you'll generally do lots of little things to make yourself healthier along the way. But it does not work long term, acai doesn't have any genuine health benefits, and it is marketed by scammers as a miracle cure. The only thing amazing about it is the profit that they make from desperate people. Please stay away. The only thing that works is diet and exercise. And by diet, I don't mean a program, like "THE SUCH AND DIET" or the "I only eat fruit diet." Diet means what you do on a regular basis, and what you need to do is to control calories. It will seem difficult at first, but when you realize how many empty calories you take in, and how much control you have over it, it becomes relatively easy to manage. However, it will always seem impossible, and it will always leave you in search of miracles until that reality clicks for you. I've lost 15 lbs in the past two weeks by making sure that I don't eat more than 1500 calories a day, and by spending 30 minutes on an elliptical machine. The younger you are, though, the more calories you'll need. (As we age our need to create new cells decreases, and our calorie needs diminish. Most people continue to eat at the same high levels, beyond what their bodies need, and so gain weight as they age.) It doesn't matter much where those calories come from, but you'll want to make sure that you get all of the vitamins and minerals you need, so it should come from real food like vegetables and meat, rather than bread and soft drinks. The website linked below will help you to monitor what you're eating. The only proven way to lose or to maintain one's weight is through controlling calories. They enter your body in the form of food and drinks, and they leave through physical exertion. Your body is a kind of machine, and calories are the fuel. But if you flood the engine, you get poor performance or you just plain stall."