People like sugar for its sweetness and its energy. Sugar is the sweetener widely used in food and beverage industry.So this sweetener became known as sugar. However, sugar has many names and forms such as sugarcane, rock sugar, palm sugar, etc. Sugar is produced in many countries and approximately 70% of it is produced for sugarcane with another 30 % is produced from sugar beet. Sugar makes to taste delicious food and necessary in the diet. The brain depends on it. So it does our level of energy. It is unfortunate that the consumption of excessive amounts of sugar any cause adverse effects on our health such as decayed tooth, heart disease, obesity, diabetes mellitus, etc. Therefore, we will get know more about sugar for good health. Three aspects of knowledge on sugar, namely its history, chemistry of sugar, and the health impact of sugar will be discussed in this report.