— FAQ
Frequently Asked Questions
Yes. Prediabetes responds strongly to lifestyle change. The Diabetes Prevention Program (DPP) showed that structured lifestyle change — nutrition, modest weight loss, and 150 minutes of weekly activity — reduces progression to type 2 diabetes by 58%. With sustained lifestyle support, many people bring their blood sugar back into a healthy range.
An A1C of 5.7% to 6.4% is classified as prediabetes. An A1C of 6.5% or higher on two separate tests indicates type 2 diabetes. Below 5.7% is considered normal. A1C reflects average blood sugar over the previous 2–3 months.
Most people see measurable A1C improvement within 3–6 months of consistent lifestyle change. Significant improvement often occurs within 12 months. The key isn't speed — it's sustainability. A1C reflects 3 months of average glucose, so meaningful changes show up in that window.
Diets emphasizing protein, fiber, non-starchy vegetables, healthy fats, and whole grains — while reducing refined carbs, added sugar, and ultra-processed food — consistently improve prediabetes markers. The Mediterranean and DASH dietary patterns have the strongest evidence.
Yes. In fact, lifestyle intervention outperformed metformin in the landmark Diabetes Prevention Program. Sustained lifestyle change is the first-line, evidence-based approach for prediabetes. Medication may be added when lifestyle alone isn't enough, but it's rarely the starting point.
Most people with prediabetes have no symptoms — which is why roughly 80% don't know they have it. Some may notice increased thirst, frequent urination, fatigue, or darkened skin in body folds (acanthosis nigricans). Diagnosis requires a blood test.