The other health benefits of Rambutan is in its antiseptic qualities. It helps to fight the body infection which invades our body. There is a healthy amount of natural sugars in rambutan which helps if you are watching your weight. Rambutan benefits are most felt when the fruit is used as a regular snack, substituting many of the unhealthy options like salted chips and sweetened foods. The natural sugars in rambutan fruit can be easily metabolized by the body and used as a source of energy.