What Actually Helps?
Being told you have prediabetes can leave you wondering what to eat, what to change, and whether you need to overhaul your entire lifestyle.
The good news is that you do not need to follow a perfect diet to support your blood sugar or reduce your risk of developing type 2 diabetes, nor should you eliminate entire food groups. Small, sustainable changes to your eating pattern and daily habits can make a meaningful difference.
What Is Prediabetes?
Prediabetes means your blood glucose, or blood sugar, levels are higher than normal but not high enough to meet the criteria for type 2 diabetes.
Common laboratory ranges used to identify prediabetes include:
A1C: 5.7% to 6.4%
Fasting blood glucose: 100 to 125 mg/dL
Two hour oral glucose tolerance test: 140 to 199 mg/dL
Your healthcare provider can help interpret your results and determine what follow up is appropriate. Prediabetes increases the risk of developing type 2 diabetes, but progression is not inevitable. Early action can help support your long term health.
1. Focus on Your Overall Eating Pattern
There is no single best diet for blood sugar management. Mediterranean style, DASH, plant based, and lower carbohydrate eating patterns can all be appropriate depending on your health needs, preferences, and circumstances.
Although these approaches may look different, they are more similar than you may realize. Many emphasize vegetables, fruits, fiber rich carbohydrates, protein sources, and unsaturated fats while limiting excess added sugars and highly processed foods.
Rather than searching for a perfect diet, focus on changes you can maintain over time. Sustainable habit changes are more impactful than a restrictive plan that is difficult to maintain.
You do not need to change everything at once. Start with one or two habits that feel realistic for your routine, budget, and food preferences.
2. Understand Carbohydrates Without Cutting Them Out
Carbohydrates are directly broken down into sugars during digestion, including glucose, which enters the bloodstream and provides energy to the body. Glucose is also the brain’s primary fuel source.
Carbohydrates are an essential part of a healthy diet. Many carbohydrate containing foods provide fiber, vitamins, minerals, and other nutrients that support overall health. The type of carbohydrate, the amount eaten, and what you eat alongside it can all influence your blood sugar response.
Choose fiber rich carbohydrate sources
Fiber slows digestion and can help support blood sugar management, digestive health, and fullness. Helpful sources include:
Oats and other whole grains
Beans, lentils, and peas
Vegetables
Nuts and seeds
Whole fruits
You do not need to avoid foods such as bread, rice, potatoes, or pasta. Consider choosing higher fiber options more often when they fit your preferences and meals.
Keep whole fruit in your diet
Whole fruit is an important part of a healthy diet. It provides fiber, vitamins, minerals, and other beneficial nutrients. Although fruit contains naturally occurring sugars, this does not make whole fruit equivalent to sugary drinks or sweets.
Juice and other sweetened beverages are generally less filling than whole fruit and can be easier to consume in large amounts. For most people with prediabetes, there is no need to avoid whole fruit.
Consider how you combine foods
Pairing carbohydrate containing foods with protein, fiber, or unsaturated fats can help make meals more satisfying and may moderate how quickly blood glucose rises after eating.
For example, you might pair toast with eggs, add beans to a rice bowl, or enjoy an apple with peanut butter. These are practical options, not strict rules that every meal must follow.
You may also hear advice about counting carbohydrates. This approach is useful for some people, but it is not necessary for everyone with prediabetes. The right strategy depends on your individual health needs, eating habits, and goals.
3. Pay Attention to Sugary Drinks and Added Sugars
Sugary drinks, such as regular soda, sweetened tea, energy drinks, and many sweetened coffees, can contribute substantial amounts of added sugar without contributing much to fullness or providing necessary nutrients.
If you regularly drink these beverages, reducing how often you have them or adjusting how they are prepared can be a useful starting point. Water, sparkling water, and unsweetened tea are some alternatives.
Added sugars in foods deserve consideration, too, but you do not need to avoid every food that contains sugar. A sustainable eating pattern can include foods you enjoy. What matters more is the overall pattern of your diet, rather than labeling individual foods as good or bad.
4. Physical Activity Matters Too
Nutrition is one part of supporting blood sugar and reducing diabetes risk. Physical activity also helps the body use glucose and supports cardiovascular health, strength, mobility, and overall well being.
For most adults, federal physical activity guidelines recommend working toward at least 150 minutes of moderate intensity aerobic activity each week. Activities you enjoy, such as walking, cycling, swimming, dancing, or gardening at a moderate intensity, all contribute.
You do not have to reach this goal immediately. Starting with shorter periods of movement and gradually building consistency can make activity feel more manageable. Breaking up long periods of sitting and incorporating movement into your regular routine are also useful steps.
Choose activities that fit your abilities, schedule, and interests. If you have medical conditions or concerns that affect exercise, talk with your healthcare provider about an appropriate starting point.
5. Consider the Other Factors That Influence Diabetes Risk
Blood sugar and diabetes risk are influenced by more than food alone. Age, family history, genetics, certain medications, sleep, physical activity, and other health conditions can all play a role.
For adults with overweight or obesity who are at increased risk of type 2 diabetes, research has shown that a modest weight reduction of around 5% to 7% of starting body weight may help lower risk. This is not a universal goal, however, and weight loss is not the right focus for everyone.
Your health needs, current nutritional status, medical history, and personal goals matter. Improving the quality of your diet, increasing activity where appropriate, getting adequate sleep, and addressing other health concerns can be worthwhile even when weight loss is not a goal.
Taking steps to support your health now may help reduce future health risks and may also help avoid some of the costs associated with managing additional health complications. Individual outcomes and healthcare costs vary, so the most appropriate approach is one that supports your health and is realistic for you to maintain.
6. When Can a Registered Dietitian Help?
Learning that you have prediabetes can bring a lot of nutrition advice, and not all of it is accurate or appropriate for your situation. You may be unsure whether you need to reduce carbohydrates, change your weight, take supplements, or follow a particular diet.
A registered dietitian can help you understand how your eating pattern relates to blood sugar, identify changes that fit your life, and work through practical challenges such as meal planning, food preferences, budget, and a busy schedule.
Nutrition care should be individualized. Your medical history, laboratory results, medications, routines, and goals all help determine which recommendations are most appropriate.
If you would like support putting this information into practice, learn more about my nutrition services or my approach to nutrition care. You can also read What Does a Registered Dietitian Actually Do? to learn more about what working with a dietitian can look like.
Start With the Next Step, Not a Perfect Plan
Prediabetes is an opportunity to pay attention to your health and make changes before blood glucose levels reach the range for diabetes. You do not need to change everything overnight, and there is no single food, supplement, or diet that guarantees prevention.
Start with practical changes that fit your life, and work with your healthcare team to determine what makes sense for you.
You should not wait until you have diabetes to seek nutrition support.
About the Author
Faith Mather, MS, RDN, CNSC, is a registered dietitian providing evidence based medical nutrition therapy for adults managing chronic and complex health conditions. Her approach emphasizes individualized, practical nutrition care that supports long term health.
References
American Diabetes Association. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes—2026. https://doi.org/10.2337/dc26-s002
Centers for Disease Control and Prevention. Prediabetes: Your Chance to Prevent Type 2 Diabetes. https://www.cdc.gov/diabetes/prevention-type-2/prediabetes-prevent-type-2.html
U.S. Department of Health and Human Services. Physical Activity Guidelines for Americans. https://health.gov/our-work/nutrition-physical-activity/physical-activity-guidelines
