"Your Blood Sugar Is High." Now What? A Calm, Clear Guide to Your Next Steps
- t2diabetesnetwork
- 1 day ago
- 6 min read
Written by Clare Koning, RN, PhD
T2D Network | April 2026 | 6 min read
Key Highlights
✅ A high blood sugar result or a prediabetes diagnosis is not a life sentence. It's a signal.
✅ Prediabetes affects an estimated 1 in 3 Canadian adults, most of whom don't know they have it
✅ With lifestyle changes, up to 58% of people with prediabetes can return to normal blood sugar levels
✅ The window between prediabetes and type 2 diabetes is your most powerful opportunity to act
✅ You don't have to do this alone. Here's exactly what to do next.
Maybe it was a routine blood test. Maybe your doctor mentioned your A1C was "a little elevated." Maybe the words prediabetes or borderline diabetes came up, and you left the appointment with more anxiety than answers.
If that sounds familiar, you're not alone, and you're in the right place.
Getting news that your blood sugar is higher than it should be can feel scary, confusing, and even a little unfair, especially if you weren't expecting it and feel mostly fine. But here's the thing: this result, uncomfortable as it is to receive, is actually one of the most valuable pieces of health information you can get. Because at this stage, you still have significant power to change where this is headed.
Let's walk through what it all means, and what to do next.
First: What Do the Numbers Actually Mean?
Blood sugar is typically measured in one of three ways. Here's how the results are categorized:
Test | Normal | Prediabetes | Diabetes |
Fasting blood glucose | Below 6.1 mmol/L | 6.1–6.9 mmol/L | 7.0+ mmol/L |
A1C (3-month average) | Below 5.7% | 5.7%–6.4% | 6.5%+ |
2-hour glucose tolerance | Below 7.8 mmol/L | 7.8–11.0 mmol/L | 11.1+ mmol/L |
(Note: Canadian and American diagnostic thresholds differ slightly. Your doctor will use Canadian guidelines.)
Prediabetes means your blood sugar is higher than normal, but not yet high enough to be diagnosed as type 2 diabetes. It's a warning signal, not a diagnosis of diabetes itself.
"But I Feel Fine. Is This Really That Serious?"
This is one of the most common reactions, and it makes total sense. Prediabetes almost never causes noticeable symptoms. That's precisely what makes it so easy to miss, and why so many people are caught off guard.
But feeling fine doesn't mean nothing is happening. Over time, persistently elevated blood sugar damages blood vessels and nerves quietly, long before symptoms appear. People with prediabetes already carry an elevated risk of cardiovascular disease, even if they never go on to develop type 2 diabetes.
The 30-year follow-up of the Da Qing Diabetes Prevention Study, one of the longest-running diabetes prevention trials ever conducted, found that without intervention, the vast majority of people with impaired glucose tolerance eventually progressed to type 2 diabetes. That's the honest reality of prediabetes left unaddressed.
But here's the equally honest flipside: the same study, and many others, showed that early action dramatically changes the trajectory.
Can Prediabetes Actually Be Reversed?
Yes, and the evidence for this is strong.
The landmark Diabetes Prevention Program (DPP), a major randomized controlled trial, found that lifestyle modification reduced the risk of progression from prediabetes to type 2 diabetes by approximately 58%, making it more effective than medication alone. Crucially, lifestyle changes also showed something medications didn't: the benefits were sustained long after the intervention ended, because the changes became embedded in how people lived.
A 2025 review published in Cardiovascular Diabetology found that structured lifestyle programs can achieve reversion to normal blood sugar levels in up to 58% of participants, with physical activity being one of the most powerful individual predictors. People who exercised more than 150 minutes per week were four times more likely to reverse their prediabetes than those who didn't.
Across studies, between 18% and 59% of people with prediabetes return to normal blood sugar levels within five years. The opportunity is greatest when you act early, before blood sugar has climbed further and before the prediabetes state has persisted for years.
This is your window. Right now.
What Actually Moves the Blood Sugar Needle?
You don't need a perfect diet, a gym membership, or a complete lifestyle overhaul overnight. The research is clear that modest, consistent changes drive the most significant results.
1. Move More, Especially After Meals
Physical activity is one of the most potent tools for improving insulin sensitivity. Your muscles use glucose directly during movement, without needing insulin, which is why even a short walk after eating can meaningfully reduce post meal blood sugar spikes.
The target supported by the evidence is at least 150 minutes of moderate activity per week, roughly 30 minutes, five days a week. Brisk walking, swimming, cycling, and dancing all count. You don't need to go hard; you need to be consistent.
2. Reduce Refined Carbohydrates and Ultra-Processed Foods
You don't have to eliminate carbohydrates entirely. The research shows it's the type of carbohydrate that matters most. Refined carbs like white bread, white rice, sugary drinks, and packaged snacks spike blood sugar rapidly. Replacing them with fibre-rich whole foods such as legumes, vegetables, oats, and whole grains slows glucose absorption and improves insulin response. The 2026 ADA Standards of Care highlight Mediterranean-style and low-carbohydrate eating patterns as having the strongest evidence for preventing progression to type 2 diabetes.
3. Aim for Modest Weight Loss If Relevant
You don't need to lose a lot. Research consistently shows that losing 5–7% of body weight significantly reduces progression risk. For someone who weighs 200 lbs, that's just 10–14 lbs. The mechanism isn't cosmetic: excess weight, especially around the abdomen, is directly linked to insulin resistance, and even modest loss reduces that burden substantially.
4. Prioritize Sleep
This one often surprises people. Poor sleep raises cortisol and disrupts insulin sensitivity, and chronically bad sleep has been shown to increase diabetes risk independently of diet and exercise. Aim for 7–9 hours of quality sleep per night. If you snore heavily or wake unrefreshed, ask your doctor about screening for sleep apnea, which is particularly common in people with prediabetes and directly worsens metabolic control.
5. Manage Stress
Chronic psychological stress raises blood cortisol, which in turn raises blood glucose. This isn't just about feeling calmer; it's about your body's chemistry. Stress management strategies, whether that's exercise, mindfulness, social connection, or time in nature, have measurable effects on metabolic health.
What About Medication?
Lifestyle change is the first-line recommendation for prediabetes, and for good reason.
But medication isn't off the table.
Metformin, a long-established and well-tolerated diabetes medication, is sometimes recommended for people with prediabetes who are at particularly high risk, who have not responded to lifestyle changes alone, or who were diagnosed at a younger age. Your doctor can discuss whether this is appropriate for you.
Newer medications including GLP-1 receptor agonists are also being studied in prediabetes prevention contexts, with promising early results. This is a rapidly evolving space, and your care team is your best guide for what makes sense in your specific situation.
5 Practical Things to Do This Week
You don't need a plan for the next decade. You need a plan for the next seven days. Here are five concrete steps you can take right now:
Book a follow-up appointment with your family doctor or primary care provider to review your results in detail and discuss next steps.
Ask for a referral to a diabetes education centre. In most provinces, you don't need a diabetes diagnosis to access free diabetes education programs. Prediabetes qualifies. These programs offer registered dietitians, nurses, and educators who specialize in exactly this.
Track your meals for three days, not to judge yourself, but to get an honest picture of where your biggest blood sugar opportunities are. Even simple notes on your phone work.
Add one 15-minute walk after dinner this week. Just one. Then build from there.
Tell someone you trust. Having a support person, whether a partner, friend, or family member, who knows what you're working toward significantly improves long-term success.
A Note on How You're Feeling Right Now
Receiving health news you weren't expecting can bring up a lot: anxiety, denial, frustration, even grief for the lifestyle you thought you had. All of those reactions are completely normal.
What's important is that this result doesn't define you, and it doesn't determine your future. It's data. Data that arrived at exactly the right time to give you the chance to do something about it.
The T2D Network exists for moments like this one. Whether you're newly diagnosed, supporting someone who is, or just trying to understand your risk, you'll find resources, community, and practical guidance throughout our website.
You don't have to navigate this alone.
Ready to learn more? Visit the T2D Network's Learn More page, take the CANRISK assessment to better understand your risk, or explore our Healthy Eating and Healthy Lifestyle resources.
