Foods rich in prebiotics include onions, garlic, leeks, asparagus, bananas, oats and barley. Starchy foods such as pasta, rice and potatoes, which have been cooked and left to cool form resistant starches that also act as prebiotics in the gut. Cucumber lemon detox water is a classic recipe that is very easy to prepare and has a delicious taste. This infused water has benefits of both cucumber and lemon; which are known for their weight loss properties. The combination of these are really effective and the results can be seen within a few days of regular intake.