Prediabetes

Prediabetes is a medical condition where blood sugar levels are higher than normal but not high enough to be classified as diabetes. It is also known as impaired glucose tolerance or borderline diabetes.

Causes and Risk Factors

Prediabetes is often caused by a combination of genetic, lifestyle, and environmental factors. Some of the risk factors for prediabetes include:

  • Obesity or being overweight
  • Physical inactivity
  • Family history of diabetes
  • Age (45 or older)
  • Certain ethnicities, such as African American, Hispanic/Latino, American Indian, or Asian American
  • History of gestational diabetes or delivering a baby over 4 kg
  • Polycystic ovary syndrome (PCOS)
  • Sleep apnea
  • Certain medications, such as steroids and certain psychiatric medications

Symptoms

Prediabetes often does not have any noticeable symptoms. However, some people may experience:

Diagnosis

Prediabetes is typically diagnosed using one of the following tests:

Treatment and Management

The primary goal of treating prediabetes is to prevent the development of type 2 diabetes. Treatment typically involves:

  • Lifestyle changes, such as:
    • Eating a healthy, balanced diet
    • Increasing physical activity, such as walking or other aerobic exercises
    • Losing weight, if necessary
    • Quitting smoking, if applicable
  • Medications, such as metformin, may be prescribed in some cases to help regulate blood sugar levels

Complications

If left untreated, prediabetes can increase the risk of developing:

Prevention

Prediabetes can often be prevented or delayed by:

  • Maintaining a healthy weight
  • Eating a balanced diet
  • Engaging in regular physical activity
  • Getting enough sleep
  • Managing stress
  • Not smoking

Frequently Asked Questions (FAQs)

What is prediabetes?
Prediabetes is a condition where blood sugar levels are higher than normal but not high enough to be classified as diabetes.

What are the symptoms of prediabetes?
Often, there are no noticeable symptoms, but some people may experience increased thirst, urination, and fatigue.

How is prediabetes diagnosed?
Through a blood test, such as a fasting plasma glucose (FPG) test or an oral glucose tolerance test (OGTT), or an A1C test.

What are the risk factors for developing prediabetes?
Risk factors include obesity, physical inactivity, family history of diabetes, age 45 or older, and certain ethnicities.

Can prediabetes be treated?
Lifestyle changes, such as diet and exercise, can help manage prediabetes and prevent progression to diabetes.

What dietary changes are recommended for prediabetes?
Eating a balanced diet low in sugar, salt, and unhealthy fats, and high in fiber, fruits, and vegetables is recommended.

Is physical activity important for managing prediabetes?
Yes, regular physical activity, such as walking or other aerobic exercises, can help manage blood sugar levels.

Can medication be used to treat prediabetes?
In some cases, medications like metformin may be prescribed to help manage blood sugar levels, but lifestyle changes are usually the first line of treatment.

Is it possible to reverse prediabetes?
With significant weight loss and lifestyle changes, it may be possible to return blood sugar levels to a normal range, but this is not guaranteed for everyone.

Should people with prediabetes be monitored regularly?
Yes, regular monitoring of blood sugar levels and health check-ups are important to prevent progression to diabetes and detect any related health issues.

Article last updated on: 18th October 2025.
If you have any feedback, please get in touch.

See more

 Conditions  Symptoms  Procedures

Diagnosis Pad
Medical AI Assistant with Differentials, Guidance, Transcriptions, Notes, Medical Encyclopedia and Explainable AI.
Download from App Store Download from Google Play
Available for iOS, macOS and Android.

Medical Disclaimer

The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this site. We we do not guarantee, and assume no legal liability or responsibility for the accuracy, currency, or completeness of the information provided.