Longan does miracles to nerve problems and is highly recommended as an anti-depressant. Longans improve wound healing capability and increases longevity. It improve blood circulation and increases the iron assimilation in human body. This in turn prevents the occurrence of anaemia. Longan is an excellent energy enhancer and is an outstanding Qi tonic which raises long term energy. This fruit is low in fats and calories; it is a healthy option for those who want to cut down fats from their body. Longans also contain complex carbohydrates which raise energy, enhance stamina and reduce food cravings. A half cup of longan contains only 35 calories making it a healthy addition to a low calorie diet. Longans contain a high amount of Vitamin C which is useful in safeguarding the body from cold and flu and improves the defense mechanism.