Eating sugar in moderation is generally not harmful, but eating too much can easily lead to dental caries, obesity, special attention should be paid to diabetics to eat less sugar or no sugar. Eat sugar in moderation can provide the body with energy to maintain normal human activity, but also can relieve the transient hypoglycemia, but sugar eaten too much is also easy to lead to dental caries, eat sugar before going to bed or eat too much sugar and did not brush your teeth in a timely manner, the daily do not pay attention to oral hygiene will be easy to develop into dental caries, accompanied by toothache and other discomforts. In addition, too much sugar intake is also easy to lead to obesity, if the excess sugar failed to consume, it will accumulate in the body into fat, thus leading to obesity. Eating sugar in moderation is not bad for the average person, but diabetics should pay attention to eating less sugar or no sugar, so as not to cause blood sugar to rise too fast, if consuming too much sugar, it may lead to high blood sugar, causing serious complications, such as diabetic ketoacidosis and so on.