The blood sugar level is the amount of sugar or glucose in the blood. Even though it is constantly changing, blood sugar levels need to be maintained within normal limits so that disturbances do not occur in the body. Blood sugar levels are influenced by nutritional intake from food or drink, especially carbohydrates, as well as the amount of insulin and the sensitivity of the body's cells to insulin. Blood sugar levels that are too high or too low will have a negative impact on health, both in the short and long term. What Happens if Blood Sugar Is Too High? Blood sugar levels are said to be too high if they exceed 200 mg/dL. The medical term for blood sugar levels that are too high is hyperglycemia. Hyperglycemia can occur when the body does not have enough insulin, which is a hormone released by the pancreas. Insulin functions to spread sugar from the blood throughout the body's cells so that it can be processed into energy. High blood sugar can also occur when the body's cells are not sensitive to insulin so the sugar from the blood cannot enter the cells for processing. High blood sugar is often experienced by diabetics who don't lead a healthy lifestyle, for example, overeating, not exercising enough, or forgetting to take diabetes or insulin medication. In addition, high blood sugar in diabetics can also be triggered by stress, infection, or taking certain drugs. Normal people who don't have diabetes can also get hyperglycemia, especially if they are experiencing serious illness. Signs that you have too high a blood sugar level are feeling tired, very high appetite, reduced body weight, frequent thirst, and frequent urination. If blood sugar levels reach 350 mg/dL or more, symptoms that can appear are extreme thirst, blurred vision, dizziness, anxiety, and decreased consciousness. In addition, the skin will look red, dry, and feel hot. If not treated immediately, blood sugar levels that are too high can cause diabetic ketoacidosis or hyperosmolar hyperglycemic syndrome, which can be fatal. In addition, high blood sugar levels in the long term without treatment can increase the risk of infection of the teeth and gums, skin problems, osteoporosis, kidney failure, nerve damage, blindness, and cardiovascular disease (heart and blood vessels)