Fresh orange juice is healthier and low-calorie alternative to all your fizzy drinks and colas. Orange is considered to be a negative calorie fruit which means that it contains fewer calories than what your body requires to burn it. Simply put, you burn more than you eat. One of the main downsides to drinking orange juice when trying to lose weight is the sugar content. Excess sugar consumption can raise blood sugar levels, which can hinder your weight loss. Orange Juice helps not only a way to lose weight while supposedly cleansing your body.