Too much as a lot of side effects in the body like
1. Tooth decay
Sugar feeds bacteria that live in the mouth. When bacteria digest the sugar, they create acids as a waste product. This acid can erode tooth enamel, leading to holes or cavities in the teeth. People who frequently eat sugary foods, particularly in between mealtimes as snacks or in sweetness drinks are more likely to develop tooth decay
2. Weight gain and obesity
Sugar can affect the hormones in the body that control a person's weight. The hormones leptin tells the brain a person has had enough to eat and a diet high in sugar may cause leptin resistance.
3. Cancer
Excess sugar consumption can cause inflammation. Oxidative stress and obesity. These factors influence a person's risk of developing cancer.