Prediabetes: Symptoms, Tests, and Preventing Type 2 Diabetes
Feeling well does not rule out prediabetes. A blood test and risk assessment are the reliable ways to detect it.
Why it can go unnoticed
The CDC says prediabetes may be present for years without clear symptoms. Marked thirst, frequent urination, blurred vision, or unintended weight loss can mean glucose is higher and should be evaluated promptly.
Tests and ranges
The ADA defines an A1C of 5.7% to 6.4% as prediabetes. Fasting glucose and an oral glucose tolerance test are also used. A clinician chooses and confirms the appropriate test because recent illness, pregnancy, or certain blood conditions can alter interpretation.
What lowers risk
A sustainable eating pattern, more physical activity, adequate sleep, and modest weight loss when indicated can improve insulin sensitivity. Start with measurable changes: unsweetened drinks, more vegetables, defined starch portions, and regular walks.
A seven-day starting plan
Track drinks and portions for three days; replace one sugary drink; add ten minutes of movement on five days; schedule testing if you have risk factors; and use the plate method for one routine meal. Repeatable steps are generally more useful than an extreme diet.
Frequently asked questions
Does prediabetes always cause symptoms?
No. It often has no clear symptoms, which is why testing matters.
Can type 2 diabetes risk be reduced?
Yes. Sustainable activity, eating, and weight changes when appropriate can reduce risk.