A 2026 guide to diabetes prevention for seniors

If you’ve recently looked at a lab report and felt a pang about your blood sugar, you’re not alone. In 2026, nearly one in three seniors over age 65 lives with diabetes, and millions more are navigating the waiting room of prediabetes.

While you might feel betrayed by your body, especially if you try to eat healthy and exercise, here’s the good news: doctors are moving away from the days of obsessing over each decimal point on a blood test. Today’s focus is on functional longevity — making sure we have the strength, energy, and clarity to enjoy life.

Many doctors have transitioned to using the 4Ms framework to help us stay sharp and mobile. This framework evaluates our:

Mentation (brain health)
Medications
Mobility
What matters most

Your health plan should serve your life — whether you’re traveling, taking dance lessons, playing with the grandkids, or finally sitting down to write that great American novel — not the other way around.

Weight loss that works, without losing muscle

Who hasn’t heard (maybe for decades) that a little weight loss would be beneficial? The challenge, however, is that as we age, weight loss becomes a double-edged sword. If we lose weight too quickly, we lose fat and the vital muscle needed for independence.

The magic 5-7%

Research from the Diabetes Prevention Program shows you don’t need a total body overhaul. Janelle Bober, registered dietician at Dietitian Live, said, “Losing 5-7% of your body weight — about 10-15 pounds for most people — can be more effective at preventing diabetes than many medications.”

Protecting your strength

The real danger as we age is sarcopenia, or muscle wasting. Keeping your muscles strong while you lose weight requires eating enough protein. Aim for about 1.2g per kg of your body weight.

Nutritionist Carrie Lupoli, founder of Disruptive Nutrition, suggests a friendlier approach than starving yourself. “I don’t approach senior health or weight loss through the concept of a calorie deficit because, for many, it’s counterproductive to long-term health,” she said. “Instead, focus on nutrient absorption and blood sugar stability.” When you eat whole foods and balance your plate, you’ll feel naturally satisfied without having to count every single calorie. She said that asking seniors to count calories or restrict what they eat intentionally often leads to frustration and disengagement, shifting the focus away from health.

Bober said, “Effective eating patterns that help with prevention include Mediterranean-style or low-carb style approaches — something high in fibrous foods and protein and low in saturated fats and sugars. The goal is to shift away from weight loss specifically and improve functional status, too: protein intake and good aerobic and weight-bearing exercises.”

A helping hand from science

Medications like GLP-1s (think semaglutide or tirzepatide) have become standard tools for weight loss. If you and your doctor decide to try them, remember the golden rule: Start low and go slow. Gradually increasing your dose helps avoid the stomach upset that can make eating and staying hydrated difficult.

“I don’t approach senior health or weight loss through the concept of a calorie deficit because, for many, it’s counterproductive to long-term health. Instead, focus on nutrient absorption and blood sugar stability.” — Nutritionist Carrie Lupoli

Eating for energy

Atkins. The grapefruit diet. The cabbage diet. Slimfast. The raw food diet. And the list goes on. These restrictive diets may have worked in the short term (or not at all), and there are many reasons why. Today’s approach is very different and focuses on preventing sugar spikes that leave you feeling tired and foggy.

Rethink your plate

Perhaps you’ve seen the plate method: half a plate of veggies, a quarter plate of protein, and a quarter in fiber-rich foods. It sounds simple, but life isn’t always a perfect diagram.

Carly Albrecht, CEO of Sustenance Simply, understands that not everyone wants a salad. “Most people are focused on not eating only ‘rabbit food,’” she said. Instead of forcing yourself to eat things you hate, find one vegetable you enjoy. Is it frozen peas? Canned green beans? Roasted carrots? Start there, she suggests. Plan how many times you can fit that one veggie into your week, and you’ve already won half the battle.

Be wary of “health” food traps

Wander grocery store aisles carefully. Lupoli said that many “senior-friendly” processed foods are packed with sugar and salt but are low in protein. These foods can sabotage your blood sugar even when the label looks healthy. Stick to whole, clean foods whenever you can to help your body absorb the nutrients it needs.

The power of water

Fun fact: Dehydration can temporarily increase your blood sugar levels. When you’re low on fluids, the sugar in your bloodstream becomes more concentrated. Reach for water instead of diet sodas to keep your system running smoothly.

Think about when you eat

A recent study found that meal timing can impact older adults’ health and longevity. Eating breakfast (and dinner) later in the day can sometimes lead to adverse outcomes. And if you eat later at night, you risk disrupting your circadian rhythm. Eat breakfast within an hour or two of rolling out of bed, and try to eat your meals at the same (or similar) times every day.

Get moving

Exercise doesn’t require you to hit the gym (unless that’s your thing). Any movement you do will help keep your blood sugar levels lower.

Bober recommends 150 minutes of activity each week. That number sounds like a lot, but you can crush that goal with three 10-minute walks (or dance parties with the grandkids) each day. A quick stroll after dinner is highly effective at clearing glucose from your system. Or try something new, like pickleball.

Wake up your muscles

Your muscles act like a sponge for sugar. Give them a bit of a workout whenever you can — including while watching TV. Albrecht said, “There’s a muscle in the back of your calf called the soleus. Pointing and flexing your feet while you watch TV or sit at a desk helps your muscles use up the sugar floating in your blood.”

Try habit stacking, too:

Do calf raises while you brush your teeth or wait for the coffee to perk.
Do a few sit-to-stands from your chair during commercial breaks.
Try one or more of these simple strength-building exercises.

Better sleep, better connection

Your lifestyle beyond what (and when) you eat and how you exercise is important, too.

Poor sleep triggers stress hormones like cortisol, which tells your body to hang onto sugar. A steady sleep routine helps your insulin work more efficiently.
Loneliness can lead to the “tea and toast” syndrome — eating simple, sugary snacks because cooking for one feels like a chore. When possible, share a meal with friends or join a community group.
Many seniors use continuous glucose monitors (CGMs). Even if you don’t have diabetes, these small sensors show you in real-time how your body reacts to different foods, like a piece of fruit or bread.

Think about reframing your goal away from weight loss specifically to instead improving how you feel and function. Learn more about diabetes prevention here and here.

A 2026 guide to diabetes prevention for seniors