Recent consumption of foods high in sugar may affect blood sugar. Normal people who consume too many foods high in sugar will not only cause obesity due to excessive calorie intake, but may also induce diabetes mellitus. Common foods high in sugar include cakes, condensed milk, sugary drinks, chocolates, etc. Eating foods high in sugar recently may lead to an increase in blood sugar levels. Both normal people and those who are suffering from diabetes themselves should eat reasonably, reduce the intake of foods high in sugar, fat and calories, and eat a diet that ensures balanced and comprehensive nutrition, which is conducive to good health. It is recommended to consult a professional doctor or dietitian to formulate a reasonable diet plan.