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Prediabetes means you have blood glucose, or blood sugar, levels that are higher than normal but not high enough to be called diabetes. Glucose comes from the foods you eat. Too much glucose in your blood can damage your body over time. If you have prediabetes, you are more likely to develop type 2 diabetes, heart disease, and stroke.
Most people with prediabetes don't have any symptoms. Your doctor can use an A1C test or another blood test to find out if your blood glucose levels are higher than normal. If you are 45 years old or older, your doctor may recommend that you be tested for prediabetes, especially if you are overweight.
Losing weight - at least 5 to 10 percent of your starting weight - can prevent or delay diabetes or even reverse prediabetes. That's 10 to 20 pounds for someone who weighs 200 pounds. You can lose weight by cutting down on the amount of calories and fat you eat and being physically active at least 30 minutes a day. Being physically active makes your body's insulin work better. Your doctor may also prescribe medicine to help control the amount of glucose in your blood.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
Diagnosis and Tests
- A1C Test and Diabetes (National Institute of Diabetes and Digestive and Kidney Diseases)
- Comparing Tests for Diabetes and Prediabetes: A Quick Reference Guide (National Institute of Diabetes and Digestive and Kidney Diseases)
- Diagnosing Diabetes and Learning about Prediabetes (American Diabetes Association) Also in Spanish
- Diagnosis of Diabetes and Prediabetes (National Institute of Diabetes and Digestive and Kidney Diseases) Also in Spanish
- Glucose Tests (American Association for Clinical Chemistry)
Prevention and Risk Factors
- Pre-Diabetes Non-Modifiable Risk Factors (American Heart Association)
Treatments and Therapies
- Medication or Lifestyle for Pre-Diabetes (American Heart Association)
- Preventing Type 2 Diabetes (National Institute of Diabetes and Digestive and Kidney Diseases) Also in Spanish
- Take Steps to Prevent Type 2 Diabetes (Office of Disease Prevention and Health Promotion) Also in Spanish
- Your Game Plan to Prevent Type 2 Diabetes (National Diabetes Education Program) - PDF
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Five Ways Older Adults Can Be More Active (National Diabetes Education Program) - PDF