Diabetes mellitus type 2 history and symptoms

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

History and Symptoms

Pre-Diabetes

Before people develop type 2 diabetes, they almost always have "pre-diabetes" -- blood glucose levels that are higher than normal but not yet high enough to be diagnosed as diabetes. There are 57 million people in the United States who have pre-diabetes. About 11 percent of people with pre-diabetes in the Diabetes Prevention Program standard or control group developed type 2 diabetes each year during the average 3 years of follow-up. Other studies show that many people with pre-diabetes develop type 2 diabetes in 10 years. Recent research has shown that some long-term damage to the body, especially the heart and circulatory system, may already be occurring during pre-diabetes.

Symptoms

People with diabetes may exhibit some or none of the following symptoms:

• Frequent urination
• Excessive thirst
• Unexplained weight loss
• Extreme hunger
• Sudden vision changes
• Tingling or numbness in hands or feet
• Fatigue
• Very dry skin
• Sores that are slow to heal
• More infections than usual