If you’ve been told you’re prediabetic, the most important thing to know is that this is reversible. In a study tracking people with prediabetes over roughly three and a half years, 43% returned to normal blood sugar levels through lifestyle changes alone. Only about 7% progressed to type 2 diabetes. That gap tells you something powerful: what you do right now matters more than the diagnosis itself.
Prediabetes means your blood sugar is elevated but hasn’t crossed the threshold into diabetes. An A1C between 5.7% and 6.4%, or a fasting blood sugar between 100 and 125 mg/dL, puts you in the prediabetic range. You’re not stuck there.
Lose a Modest Amount of Weight
You don’t need a dramatic transformation. The landmark Diabetes Prevention Program, one of the largest studies ever conducted on prediabetes, set a target of just 7% body weight loss. For someone weighing 200 pounds, that’s 14 pounds. For someone at 170, it’s about 12 pounds. The study found that reaching this goal within the first six months produced the best results, because a slower rate of weight loss left more time for blood sugar to keep climbing.
The weight doesn’t need to come off through any specific diet. What matters is the calorie reduction itself and, critically, keeping the weight off afterward. Even partial weight loss helps. Losing 5% of your body weight improves how your cells respond to insulin, which is the core problem in prediabetes.
Move for 150 Minutes a Week
The target recommended by most health organizations is 150 minutes of moderate-intensity activity per week. That breaks down to about 30 minutes, five days a week. Moderate intensity means you can talk comfortably but couldn’t sing along to a song. Brisk walking, cycling on flat ground, swimming, and dancing all qualify.
Exercise helps with prediabetes through a direct mechanism that has nothing to do with weight loss. When your muscles contract during physical activity, they pull sugar out of your bloodstream for fuel, even without needing as much insulin to do it. This effect lasts for hours after you stop. Regular activity also reduces your risk of heart disease and premature death compared to being sedentary, which matters because prediabetes raises cardiovascular risk too.
Resistance training (bodyweight exercises, weight lifting, resistance bands) adds another layer of benefit. Building muscle mass gives your body more tissue that actively absorbs blood sugar. Aim for at least two sessions per week on non-consecutive days.
Change What You Eat, Not Just How Much
A Mediterranean-style eating pattern, combined with moderate calorie reduction and physical activity, has been shown to cut the risk of developing type 2 diabetes by 31%. This pattern emphasizes vegetables, fruits, whole grains, legumes, nuts, olive oil, and fish, while limiting red meat, processed foods, and refined carbohydrates.
You don’t need to follow a rigid meal plan. A few shifts make the biggest difference:
- Prioritize fiber. The dietary guidelines recommend 22 to 34 grams of fiber per day depending on your age and sex. Most Americans eat far less. Insoluble fiber, found in whole grains, vegetables, and beans, directly increases insulin sensitivity. It also slows digestion, which prevents the sharp blood sugar spikes that stress your system.
- Swap refined carbs for whole ones. White bread, white rice, sugary cereals, and pastries cause rapid blood sugar spikes. Brown rice, oats, quinoa, and whole wheat do the same job with a slower, steadier rise.
- Pair carbs with protein or fat. Eating an apple with a handful of almonds, or toast with eggs, slows the rate sugar enters your bloodstream. This simple habit reduces post-meal glucose spikes significantly.
- Watch liquid sugar. Soda, fruit juice, sweetened coffee drinks, and sports drinks are some of the fastest routes to blood sugar spikes. Water, unsweetened tea, and black coffee are the easiest substitutions.
Take Sleep and Stress Seriously
Cortisol, the hormone your body releases during stress, works directly against insulin. It blocks insulin from doing its job, tells your liver to dump more sugar into your bloodstream, and prevents your muscles from absorbing that sugar efficiently. It even breaks down fat in a way that further worsens insulin resistance. Chronic stress keeps cortisol elevated for long stretches, essentially undermining your dietary and exercise efforts behind the scenes.
Sleep deprivation triggers the same cortisol response. Consistently getting fewer than six hours of sleep raises blood sugar levels even in people who eat well and exercise. Aiming for seven to eight hours gives your body time to regulate hormones properly. If you struggle with sleep, addressing that problem is a legitimate part of managing prediabetes, not a secondary concern.
Stress management doesn’t require meditation retreats. Regular physical activity (which you’re already adding), consistent sleep schedules, and even simple breathing exercises throughout the day can bring cortisol levels down meaningfully over time.
Ask About Medication If You’re High Risk
Lifestyle changes are the first and most effective approach, but medication can be an option in certain cases. Clinical trials have shown that metformin, a common and inexpensive drug, is most effective for people under 60, those with a BMI over 35, and women who had gestational diabetes during pregnancy. If you fall into one of these groups and lifestyle changes alone haven’t moved your numbers, it’s a conversation worth having with your doctor.
Metformin works by reducing the amount of sugar your liver releases and improving how your body responds to insulin. It’s not a substitute for the lifestyle changes above. In the Diabetes Prevention Program, lifestyle intervention outperformed metformin overall. But for higher-risk individuals, the combination can provide extra protection.
Track Your Progress
After a prediabetes diagnosis, the CDC recommends repeating your A1C test every one to two years. This is how you’ll know whether your changes are working. If your A1C drops below 5.7%, you’ve returned to the normal range. If it stays between 5.7% and 6.4%, your efforts are likely preventing progression, but there’s room to push further. If it rises above 6.4%, that crosses into diabetes territory and changes the treatment approach.
Don’t wait two years if you’ve made significant changes. Many doctors will recheck at six months or a year if you’ve actively been losing weight and exercising. Seeing your numbers improve is one of the strongest motivators to keep going, and catching a rising trend early gives you time to adjust your approach before things progress.
The window between prediabetes and type 2 diabetes isn’t a countdown. It’s an opportunity, and the evidence strongly suggests most people who take it seriously can turn their numbers around.