Bulk sweeteners tend to be types of sugars that occur naturally. Intense sweeteners are used in small quantities and tend to be much sweeter than sugar.
Intense sweeteners are generally artificial sweeteners.
It is absorbed more slowly than glucose and has to be converted to glucose in the liver before it finally ends up as 'blood glucose'. Fructose therefore produces a smaller rise in blood glucose level than a similar amount of sucrose or starchy carbohydrate. However, if eaten in large quantities, fructose can cause stomach pain and diarrhoea. Fructose provides just as much energy as sucrose or any other sugar. For this reason, fructose offers no special benefit if you are trying to reduce your overall calorie intake in order to lose weight .