Someone with high blood sugar has a higher-than-normal amount of glucose in the blood, states the American Diabetes Association. Blood sugar increases when someone does not make enough insulin or does not have a normal r... More » Health Medical Ranges & Levels

A normal fasting blood glucose level is less than 100 milligrams per deciliter. A reading less than 140 mg/dL two hours after eating is considered normal as well, according to WebMD. More »

High blood sugar levels can be lowered by exercising and changing the diet, according to the American Diabetes Association. However, it is recommended that individuals with ketones in their urine should not exercise, as ... More » Health Medical Ranges & Levels

High blood glucose, elevated levels of sugar in the urine, frequent urination and increased thirst are symptoms of hyperglycemia, or high blood sugar, according to the American Diabetes Association. People with hyperglyc... More »

Hyperglycemia, or high blood sugar, occurs when insulin levels are too low or the body is not able to properly utilize glucose for fuel, according to MedicineNet. There are many compounds and substances that alter glucos... More » Health Medical Ranges & Levels

Someone with an A1c of 6.4 percent has an estimated average glucose between 126 and 154 milligrams per deciliter, reports the National Diabetes Information Clearinghouse. The A1c test determines a person's average glucos... More »

Signs of high blood sugar, also known as hyperglycemia, include weight loss, frequent urination, troubled vision and skin infections, according to WebMD. Consistent high levels of blood sugar may damage nerves, causing l... More » Health Medical Ranges & Levels