What is the Normal Blood Sugar Level for Humans?

Under normal conditions, the fasting blood glucose level for a healthy individual ranges from 3.9 to 6.1 mmol/L. One hour after a meal, the blood glucose level should be between 6.7 and 11.1 mmol/L, and it should be ≤7.8 mmol/L two hours after a meal. For pregnant women, the fasting blood glucose level should not exceed 5.1 mmol/L, it should not exceed 10.0 mmol/L one hour after a meal, and it should not exceed 8.5 mmol/L two hours after a meal. It is recommended to maintain one's blood glucose within the normal range on a daily basis.

When people monitor their blood glucose, they typically perform fasting blood glucose tests. Generally, fasting blood glucose levels range from 3.9 to 6.1 mmol/L. When tested one hour after a meal, blood glucose levels should be between 6.7 and 9.4 mmol/L, and at most, should not exceed 11.1 mmol/L. Two hours after a meal, blood glucose levels should be ≤7.8 mmol/L, and for healthy individuals, they should return to normal levels within three hours after eating. For pregnant women, fasting blood glucose should not exceed 5.1 mmol/L, one hour after a meal should not exceed 10.0 mmol/L, and two hours after a meal should not exceed 8.5 mmol/L.

Generally, high blood glucose levels in humans may be caused by improper diet. If a person is picky about their food or has a biased diet, frequently consuming sweet foods and excessive sugary substances, these can accumulate in the body, leading to obesity. Excess sugary substances that are not digested can also raise blood glucose levels, and over time, this may lead to the development of diabetes. Elevated blood glucose is also associated with decreased insulin function. If the body does not secrete enough insulin or if the biological function of insulin decreases, these insulin molecules cannot convert sugary substances into energy for utilization, resulting in elevated blood glucose levels and manifestations of hyperglycemia.

Many medications can improve high blood glucose levels. If symptoms of elevated blood glucose have progressed to diabetes, medication may be required to control blood glucose. After a doctor's diagnosis, the severity of hyperglycemia can be determined, and appropriate medication can be selected to lower blood glucose. If necessary, insulin can be injected to improve the situation, as insulin can break down sugary substances, also achieving the goal of lowering blood glucose.

Exercise is a way to promote good health. Many people become obese due to lack of exercise. If one can engage in moderate exercise and consume excess sugary substances through reasonable exercise, blood glucose levels can often be stabilized. Therefore, it is recommended for individuals with elevated blood glucose to dedicate a certain amount of time each day to exercise, improving their physical fitness and promoting good health, while also lowering their blood glucose.