The primary sugar in fruit is fructose, which some refer to as fruit sugar. When consumed in a serving of fruit, the sugars in fruit, are not ‘bad’ and are not likely to make you gain weight. It is when purified forms of sugar – table sugar, honey, and fructose by itself – are consumed in excess quantities as added sugar to soda, candy, sweetened baked goods, etc. that it will replace nutritious foods and will be more likely to make you gain weight. Fruits contain water, fiber and nutrients as well as some natural sugar, which makes them optimal to include when trying to maintain or lose weight, because they are more filling.