How to Reverse Prediabetes: The Lifestyle Changes That Matter Most

There is no pill that works as well as lifestyle change for prediabetes. In the Diabetes Prevention Program, a modest weight loss and regular walking cut the risk of type 2 diabetes by 58%, almost twice as much as the medicine metformin. The changes were not extreme: participants ate a little less, chose healthier foods and walked briskly for about 20–30 minutes a day. Here are the five areas that matter most.

What the evidence shows

Knowler et al., NEJM 2002; Hamman et al., Diabetes Care 2006.

1. Nutrition: improve food quality

There is no single “prediabetes diet”. Mediterranean, lower-carb, vegetarian and DASH-style eating can all work. What they share is more fiber and whole foods, and fewer refined carbs and sugary drinks. A simple way to build meals is the plate method:

See What to Eat With Prediabetes for a full eat more, eat less list.

2. Weight: modest loss, big payoff

If you carry extra weight, losing 5–7% is enough to make a big difference, because the first fat to go is often from the liver and around the organs. That is less than most people expect:

3. Movement: aim for 150 minutes a week

Activity works in two ways: it burns glucose straight away, and it makes your muscles more sensitive to insulin for up to a day afterwards. Brisk walking is the easiest place to start; you should be able to talk but not sing.

• 30 minutes, 5 days a week, or three 10-minute walks a day.
• A 10–15 minute walk after meals blunts the blood sugar spike.
• Strength training twice a week builds the muscle that stores glucose. See our Beginner’s Guide to Strength Training.
• Break up sitting every 30–60 minutes with a few minutes of standing or walking.

4. Sleep: 7 to 8 hours

Short sleep raises hunger hormones, increases cravings for sugary foods and makes the body more insulin resistant. Aim for 7–8 hours with a regular bedtime and wake time. Loud snoring with daytime sleepiness can be a sign of sleep apnea, which is common with prediabetes and treatable. Our Better Sleep Routine guide has practical tips.

5. Mindset and support

Change is easier with a plan and people on your side. Structured programs roughly double the weight people lose compared with going it alone.

Putting it together: a sample day

Here is what the five changes can look like on an ordinary weekday. Breakfast is oats with nuts and berries, or eggs with vegetables, instead of a sugary cereal. A 10-minute walk after lunch replaces scrolling at your desk. The afternoon snack is a piece of fruit with a handful of nuts. Dinner follows the plate method: half vegetables, a portion of dal or grilled fish, and a smaller serving of rice or roti, followed by a short walk. Screens go off half an hour before bed, and you aim to be asleep by the same time each night. None of these steps is dramatic, but together they add up to the kind of change that research shows works.

What about medication?

Metformin can lower the risk of type 2 diabetes, especially in people under 60 with a BMI of 35 or more and in women who had gestational diabetes. Newer weight-loss medicines such as GLP-1 receptor agonists also lower blood sugar and weight, and may be offered to people who meet criteria for obesity treatment. Medicines work best alongside, not instead of, lifestyle change. Talk to your doctor about whether they suit you.

How quickly will I see results?

Common questions