What Can I Do to Lower My Blood Sugar Levels?

Lowering blood sugar comes down to a handful of reliable strategies, and most of them are lifestyle changes you can start today. Diet, movement, sleep, stress, and body weight each affect how your cells respond to glucose, and working on even one or two of these areas can produce measurable results. Some of the most effective tactics are surprisingly simple, like taking a short walk right after eating or changing the order in which you eat the foods on your plate.

Rethink What You Eat and How You Eat It

The foods you choose matter, but the way you structure your meals can matter just as much. Two strategies have strong evidence behind them: shifting toward foods that release glucose more slowly, and eating your vegetables before your carbs.

Low-glycemic-index foods, which include most non-starchy vegetables, legumes, nuts, and whole grains, cause a slower, steadier rise in blood sugar compared to refined carbohydrates. A Cochrane review of trials in people with diabetes found that low-glycemic-index diets lowered HbA1c (a marker of average blood sugar over two to three months) by about half a percentage point compared to higher-glycemic diets.¹ That may not sound dramatic, but in clinical terms, half a point on HbA1c is meaningful. A review of 13 randomized controlled trials confirmed that about half showed clear improvements in at least one measure of blood sugar control when participants followed low-glycemic eating patterns.²

Soluble fiber deserves special mention. Found in oats, beans, barley, flaxseed, and many fruits, it forms a gel-like substance in your digestive tract that slows the absorption of sugar from a meal. This viscous effect blunts the glucose spike you get after eating carbohydrate-rich foods. Beyond just slowing things down physically, the fiber also feeds gut bacteria, which produce short-chain fatty acids that trigger the release of hormones involved in blood sugar regulation.³ Those same short-chain fatty acids stimulate the release of GLP-1, a hormone that boosts insulin secretion and increases feelings of fullness.⁴

What about low-carb diets? They can work, particularly in the short term. A meta-analysis of randomized trials comparing low-carb to low-fat diets in people with type 2 diabetes found that low-carb diets reduced HbA1c by about 0.4% more at three months. But by six months and beyond, the difference between the two approaches faded to nothing statistically significant.⁵ A separate systematic review and meta-analysis comparing the two dietary approaches found no significant difference in blood glucose changes between them overall.⁶ The upshot is that cutting carbs can help early on, but long-term blood sugar control depends more on sticking with whatever eating pattern you can sustain and on the overall quality of what you eat.

Eat Your Vegetables First

This one is almost absurdly simple: start your meal with vegetables and protein before you touch the rice, bread, or pasta. A randomized crossover study in healthy young women found that eating vegetables first, regardless of how fast or slow people ate, produced significantly lower blood glucose and insulin levels at 30 and 60 minutes compared to eating carbohydrates first.⁷ The effect held whether people ate quickly or slowly, which is encouraging for those of us who tend to rush meals.

In people with type 2 diabetes, a study that had participants eat vegetables before carbohydrates found a much larger drop in blood sugar in the vegetables-first group compared to those eating in their usual order. The vegetables-first group also increased their daily fiber intake, which compounds the benefit.⁸ The mechanism is straightforward: the fiber and bulk from vegetables slow gastric emptying, so the carbohydrates that follow enter your bloodstream more gradually. If you change nothing else about what you eat, try changing the order.

Walk After Eating

Post-meal walking is one of the most practical and well-supported blood sugar strategies. You don’t need to jog, and you don’t need to go far. A study found that a 10-minute walk started immediately after consuming glucose brought peak blood sugar down from about 182 mg/dL to about 164 mg/dL compared to sitting still.⁹ Interestingly, a 30-minute walk started at the same time didn’t show a significant difference from the control in that study, possibly because the shorter walk kept its intensity more focused during the peak glucose absorption window.

Timing matters as much as duration. Research comparing walking immediately after a meal to walking an hour later found that post-meal glucose rose only about a third as much when people walked right away versus not walking at all, and walking immediately produced lower cumulative glucose levels than walking delayed by an hour.¹⁰ Even slow-paced walking after a meal reduces the blood sugar peak and the total area under the glucose curve in a dose-dependent way, meaning more walking minutes generally means a bigger effect.¹¹

If a dedicated walk isn’t realistic, even breaking up prolonged sitting helps. A study in overweight and obese adults found that taking short walking breaks every 20 minutes during prolonged sitting reduced postprandial glucose and insulin levels compared to sitting uninterrupted for hours. The reductions were similar whether the breaks involved light or moderate walking.¹² For desk workers, this means setting a timer and standing up to move for even a couple of minutes can chip away at blood sugar spikes throughout the day.

Build Muscle With Resistance Training

Walking addresses the acute glucose spike after a meal, but resistance training tackles the longer-term picture. Muscle is one of the biggest consumers of glucose in your body, and building more of it gives your blood sugar somewhere to go. Resistance exercise improves insulin sensitivity in part by increasing the amount of glucose transporter proteins (GLUT4) in muscle tissue, which helps your cells pull glucose out of the bloodstream more efficiently.¹³ This benefit is especially well documented in older adults, where age-related muscle loss can worsen insulin resistance. But anyone at any age can benefit from the added glucose disposal capacity that comes with more muscle mass.

You don’t need to become a powerlifter. Two to three sessions a week of bodyweight exercises, resistance bands, or basic weightlifting is enough to start seeing metabolic improvements. The key is consistency over weeks and months rather than intensity in any single session.

Protect Your Sleep

Poor sleep doesn’t just leave you tired. It actively disrupts how your body handles glucose. A study in healthy subjects found that a single night of partial sleep deprivation reduced the rate at which cells took up glucose by roughly 20%, while the liver simultaneously pumped out more glucose than it did after a normal night’s sleep. Overall, the rate of glucose infusion needed to maintain steady blood sugar during the test dropped by about 25%, pointing to a rapid and meaningful increase in insulin resistance from just one bad night.¹⁴

Sleep quality and duration are both targets. Most adults need seven to nine hours, and the evidence suggests that consistently falling short creates a compounding insulin resistance effect. If you’re eating well and exercising but still seeing stubborn high blood sugar, poor sleep is a common and overlooked culprit.

When You Eat Matters Too

Your body handles sugar differently depending on the time of day. Late-night eating leads to higher glucose responses compared to the same meal consumed earlier, and this effect holds regardless of body weight, fat mass, and total calorie intake. A study in people with prediabetes or early type 2 diabetes found that late eaters had significantly greater glucose spikes after a standard oral glucose load compared to early eaters, even after adjusting for body composition and diet quality.¹⁵

Night-shift workers face an amplified version of this problem. Research on female healthcare workers found that blood sugar after a high-sugar meal consumed at night rose faster and stayed elevated longer than the same meal eaten during the day.¹⁶ Your circadian clock regulates insulin secretion and sensitivity, and eating when your body expects you to be sleeping means your glucose-handling machinery is running at reduced capacity. If you can’t change your schedule, at least being strategic about what you eat during late shifts, favoring protein, fiber, and fat over refined carbohydrates, can help buffer the effect.

Manage Stress Deliberately

Stress hormones exist to prepare you for danger, and one thing they do is flood your bloodstream with glucose for quick energy. Cortisol and adrenaline both promote the release of stored glucose from the liver and reduce insulin sensitivity in peripheral tissues. In a healthy person, this is a short-lived survival mechanism. But chronic psychological stress keeps those hormones elevated, which can lead to persistently higher blood sugar and, over time, insulin resistance.¹⁷

The practical advice here is unglamorous but real: regular stress-reduction practices like meditation, deep breathing, adequate leisure time, and maintaining social connections can have a measurable effect on blood sugar by keeping cortisol in check. People who track their glucose often notice that a bad week at work shows up in their readings even when their diet and exercise haven’t changed. That’s the stress effect.

Lose Weight, Especially Around the Middle

If you’re carrying extra weight, losing some of it is probably the single most powerful blood-sugar intervention available. The relationship between weight loss and blood sugar improvement is dose-dependent: the more weight you lose, the better your glucose control gets. In the landmark DiRECT trial, nearly half of participants with type 2 diabetes who went through an intensive weight-management program achieved diabetes remission at 12 months. Among those who lost 15 kg (about 33 pounds) or more, the remission rate reached 86%.¹⁸ A systematic review and meta-regression analysis confirmed this dose-response relationship between weight loss and diabetes remission, independent of age, diabetes duration, baseline HbA1c, BMI, or the type of intervention used to achieve the weight loss.¹⁹

Where you carry fat also matters. Visceral fat, the kind packed around your organs in the abdominal cavity, has an outsized effect on glucose metabolism compared to fat stored under the skin. Abdominal adiposity drives up glucose production in the liver and worsens hepatic insulin resistance.²⁰ Liver fat specifically appears to be a key determinant of blood sugar levels and the development of high blood sugar.²¹ The encouraging news is that visceral and liver fat tend to be the first fat deposits to shrink during weight loss, so even modest reductions in body weight can produce disproportionate improvements in blood sugar.

Vinegar Before or With a Meal

Adding a small amount of vinegar to a meal, usually about a tablespoon of apple cider vinegar diluted in water, has been shown to blunt the blood sugar response. One well-cited investigation found that consuming acetic acid with a bread-based meal lowered post-meal blood sugar by about 31% compared to a neutralized version of the same acid, suggesting that the acidity itself contributes to the effect.²² The evidence on whether this works through delayed stomach emptying is mixed, and the mechanism isn’t fully nailed down. But the effect on blood sugar after carbohydrate-rich meals is consistent enough across studies that it’s a reasonable, low-risk tactic to try, especially if you’re about to eat a starchy meal. Dilute it well and drink it through a straw or rinse your mouth afterward, because the acid is hard on tooth enamel over time.

Check Your Magnesium

Magnesium doesn’t get the attention it deserves when it comes to blood sugar. This mineral is involved in the insulin signaling cascade inside your cells. When intracellular magnesium is low, the activity of enzymes that allow insulin to do its job decreases, which impairs glucose transport into cells and promotes insulin resistance.²³ Suppressed intracellular magnesium can alter insulin sensitivity at multiple points in the signaling chain, from the receptor itself to intracellular glucose processing.²⁴

Magnesium deficiency is common, particularly in people who eat a lot of processed food, and it’s more prevalent in people with type 2 diabetes than in the general population. Good dietary sources include dark leafy greens, nuts, seeds, beans, and whole grains. If your diet is short on these foods, a magnesium supplement is inexpensive and generally safe, though checking with your doctor about dosing is a good idea if you have kidney issues.

A Note for People on Insulin or Certain Medications

If you take insulin or medications that stimulate insulin secretion (sulfonylureas, for example), aggressively lowering blood sugar through exercise and diet changes can push you into hypoglycemia, which is when blood sugar drops dangerously low. Exercise amplifies this risk because your muscles pull glucose from the blood while your medication is simultaneously driving it down.²⁵ Symptoms include shakiness, sweating, confusion, and dizziness. This doesn’t mean you shouldn’t exercise or improve your diet; it means you should do it in coordination with your healthcare provider so they can adjust your medication as your blood sugar improves. People managing diabetes with diet alone, or with medications like metformin that don’t cause hypoglycemia on their own, generally don’t face this risk.

Why Morning Blood Sugar Can Be Stubbornly High

Many people notice their fasting blood sugar is higher than expected, sometimes higher than it was before bed, and this can be confusing. One common explanation is the dawn phenomenon, in which the body releases a surge of hormones in the early morning hours that makes the liver produce more glucose to prepare you for waking up. In people with diabetes, this natural process can result in elevated morning readings that don’t reflect anything you ate or did wrong the night before. A study in young people with type 1 diabetes found a close positive correlation between nighttime blood sugar levels and morning fasting levels, with the mean fasting blood sugar running about 60 mg/dL above the 3 a.m. value, consistent with the dawn phenomenon rather than a rebound from overnight lows.²⁶

If your morning numbers are consistently high, strategies that can help include eating dinner earlier, avoiding late-night snacks (particularly high-carb ones), going for an evening walk, and talking to your doctor about adjusting your medication timing. Knowing that the dawn phenomenon exists can also save you from the frustration of thinking you’re doing everything wrong when, in reality, your liver is just being overzealous before sunrise.

Using a Continuous Glucose Monitor to Learn Your Patterns

Continuous glucose monitors, or CGMs, are small sensors you wear on your arm or abdomen that track your blood sugar every few minutes. They were originally designed for people with diabetes, but a growing number of non-diabetic individuals now use them to understand how their bodies respond to food, exercise, and sleep. A systematic review found that CGM can identify subclinical glucose dysregulation even in people without a diabetes diagnosis, linking higher glycemic variability to markers of cardiovascular risk.²⁷

One of the most practical findings from CGM research in non-diabetic populations is that glycemic variability, how much your blood sugar swings up and down, is associated with concrete lifestyle factors. Lower variability was linked to lower carbohydrate intake, less ultra-processed food, and longer overnight fasting periods.²⁸ People who tried a two-week CGM experiment often describe it as eye-opening: they discover that their “healthy” breakfast cereal spikes their glucose more than a plate of eggs, or that stress from a work meeting produces a visible glucose bump without them eating anything at all. Even a single two-week session with a CGM can teach you which specific foods and habits are working for you and which aren’t, giving you a personalized roadmap that generic dietary advice never could.

A large-scale CGM mapping study of over 7,000 non-diabetic individuals created age- and sex-specific reference ranges for dozens of glucose metrics, providing benchmarks against which individuals can compare their own data.²⁹ As CGM devices become cheaper and more widely available, they’re increasingly useful as a feedback tool even for people who don’t have diabetes but want to optimize their metabolic health.