Sugar-free cola is not recommended for people with diabetes. Sugar-free cola is the replacement of sugar components in cola with sugar substitutes, such as aspartame, which is commonly used. Although it is not glucose, it is an additive that does not cause excessive increases in blood sugar levels in people with diabetes, excessive consumption of aspartame can stimulate and interfere with nerve endings and may cause migraines. Long-term consumption of sugar-free cola may also cause memory loss, vision loss, and tooth demineralization, so it is not recommended for diabetics. The addition of sweeteners can increase the desire to consume sugar-free cola in diabetics, and some diabetics may experience weight gain leading to obesity after excessive consumption of sugar-free cola, which can aggravate insulin resistance and lead to poor long-term blood glucose control. In addition, sugar substitutes are also capable of releasing methanol, and long-term consumption can also affect the dopamine system in the brain of diabetics, and some patients can become addicted to this beverage, so it is best for diabetics not to drink sugar-free cola. It is recommended that diabetics eat a healthy, balanced diet in their daily lives and try to choose natural foods as well as sources of beverages. If diabetics want to drink, they can squeeze themselves a glass of juice with low sugar content, such as choosing orange juice or pear juice, both of which are more suitable, instead of sugar-free cola, to satisfy their desire for drinks. The intake of vitamins, fiber and water among natural foods is safer for diabetics. Drinks with added sugar substitutes and other auxiliary ingredients are actually not a healthy choice for diabetics.