Fruits to lose weight in summer 4. Mulberry is rich in nutrients, including a variety of amino acids, vitamins, organic acids, carotene and other nutrients. The mineral content is much higher than other fruits, mainly potassium, magnesium, iron, manganese, copper and zinc. Modern medicine has proved that mulberry has the functions of enhancing immunity, promoting the growth of hematopoietic red blood cells, promoting metabolism and so on, and it is one of the very ideal slimming foods.