The first role of fructose, can improve the sweetness of food, if the sweetness of ordinary cane sugar is 100, fructose sweetness can be as high as about 175 or so, so fructose sweetening effect will be very obvious. The second role, can provide the body with a certain amount of energy, because as a monosaccharide, fructose is also able to 1 gram to produce 4 kcal or so of energy, so if you eat too much fructose, may cause too much energy intake and cause high incidence of obesity. The third role, in the process of metabolism can produce endogenous uric acid, so can properly raise the level of uric acid in the body, which may induce gout attacks, so the amount of fructose intake should not be too much.