What Does an A1c of 5.7 Mean?
If your lab results show a hemoglobin A1c of 5.7%, you may be wondering whether you have prediabetes—and whether you can reverse it. The short answer: yes, 5.7% is the starting point of the prediabetes range, and yes, for many people it can be brought back down.
What Is Hemoglobin A1c?
Hemoglobin A1c measures the percentage of your red blood cells that have sugar attached to them. Because red blood cells live for about three months, A1c reflects your average blood sugar over the past two to three months—not just a single moment like a fasting glucose test.
According to the American Diabetes Association, A1c ranges are:
- Below 5.7%: Normal
- 5.7% to 6.4%: Prediabetes
- 6.5% or higher: Diabetes (confirmed with repeat testing)
An A1c of 5.7% means you're at the very beginning of the prediabetes range. It's an early warning sign—not a diagnosis of diabetes.
Why Does Prediabetes Matter?
Prediabetes means your body is having a harder time managing blood sugar, often because of insulin resistance. Without changes, many people with prediabetes go on to develop type 2 diabetes.
Elevated blood sugar is also linked to a higher risk of heart disease, fatty liver, and other metabolic issues—even before it reaches the diabetes range. The good news is that catching it early gives you the most room to act.
Can You Bring Your A1c Back Down?
For many people, yes. In the landmark Diabetes Prevention Program study, people with prediabetes who lost about 7% of their body weight and got around 150 minutes of activity per week reduced their risk of developing type 2 diabetes by 58%.
Steps that can help include:
- Losing a modest amount of weight: Even 5–7% of body weight can make a meaningful difference
- Moving more: Both cardio and strength training improve how your body uses insulin
- Building balanced meals: Prioritize protein, fiber, and whole foods, and limit refined carbs and sugary drinks
- Improving sleep: Poor sleep can raise blood sugar and increase insulin resistance
- Managing stress: Chronic stress hormones can push blood sugar higher
What Other Labs Should You Look At?
A1c is just one piece of the picture. Your provider may also look at:
- Fasting glucose: Your blood sugar at a single point in time
- Fasting insulin: Can reveal insulin resistance before blood sugar rises
- Lipid panel: Blood sugar issues often travel with high triglycerides and low HDL
- Liver enzymes: To check for signs of fatty liver
Retesting A1c every three to six months can help you track whether your changes are working.
Understand Your Numbers With Heva
Knowing your numbers is the first step toward changing them. Comprehensive lab testing paired with provider guidance can help you understand where you are and what to focus on.
Learn more about lab testing here: Heva Lab Testing
The Bottom Line
An A1c of 5.7% is an early signal, not a life sentence. With the right lifestyle changes—and support when you need it—many people are able to bring their blood sugar back into the normal range.