Crystalized fructose is even more harmful.

White sugar is refined sucrose, its main components are glucose and fructose. Excessive intake of white sugar is associated with a variety of health problems, including obesity, diabetes, cardiovascular disease, etc. The high calorie and low nutritional value of white sugar makes it easy to cause weight gain and obesity, and obesity is related to the occurrence of many chronic diseases. Crystallized fructose is a simple sugar found naturally in fruits that is slightly sweeter than sucrose. Although crystallized fructose is similar in sweetness and calories to white sugar, research shows that crystallized fructose is metabolized differently than glucose and has a greater impact on blood sugar and insulin levels.