What is HbA1C And Why Keeping It In Range Is Essential For Metabolic Health
- Nika Alexandra
- Jun 6
- 4 min read
Updated: Jun 13
Understanding A1C ranges: The lab marker that predicts your health for the next 10 years
If you've ever had a blood test for diabetes, you've probably heard of the term hemoglobin A1C (HbA1C) or A1C. But what exactly is it? And why is keeping it in the right range so important for your health and vitality?
What is A1C?
A1C, or hemoglobin A1C, is a blood test that measures your average blood sugar levels over the past 2 to 3 months. It gives doctors a snapshot of how well your body is managing blood sugar in the long term. The test works by measuring the amount of sugar (glucose) that sticks to your red blood cells. Since red blood cells live for about 3 months, the A1C test reflects your average blood sugar levels during that time. The results are given as a percentage.
Standard Medical Ranges:
• Prediabetes: 5.7% to 6.4% (39-46 mmol/mol)
• Diabetes: 6.5% or higher (48+ mmol/mol)
Functional Nutrition Range:
• Insulin Resistance: 5% to 5.6% (31-38 mmol/mol)
Functional nutrition practitioners use narrower markers to catch blood sugar imbalances early, focusing on optimal health rather than waiting for a disease diagnosis. A disease often starts decades before it's diagnosed. This range is well before it reaches diabetic levels and when there is time to heal the insulin receptors.
Why is A1C So Important?
Blood sugar is a big deal because it fuels your body's cells, but too much of it over time can wreak havoc on your organs, blood vessels, and nerves. Think of your A1C as a marker for how well your engine is running. When A1C levels stay in the normal range, your body runs smoothly, and you reduce your risk of complications like heart disease, nerve damage, and kidney problems.
But if your A1C is consistently high, it means that excess sugar is circulating in your bloodstream and causing wear and tear on your body. It's like running your car engine on dirty fuel—you'll eventually cause some serious damage. Your body treats each sugar spike as a threat, activating fight-or-flight and flooding you with stress hormones, leaving you exhausted, wired, and frustrated.
How Diabetes Affects Your Entire Body
Doctors and researchers are increasingly recognizing how diabetes and insulin resistance affect various organs beyond just the pancreas. Did you know that 40% of adults are insulin resistant? About 1 in every 3 adults in the US had prediabetes as of 2021. Here's a breakdown of how diabetes manifests in different organs and systems:
• Brain: Alzheimer's/Type 3 Diabetes
• Ovaries: Polycystic Ovary Syndrome (PCOS)
• Liver: Non-Alcoholic Fatty Liver Disease (NAFLD)
• Kidneys: Diabetic Nephropathy
• Eyes: Diabetic Retinopathy
• Heart: Diabetic Cardiomyopathy
• Nerves: Diabetic Neuropathy
• Skin: Diabetic Dermopathy
• Feet: Diabetic Foot Ulcers
• Pancreas: Type 1 and Type 2 Diabetes
• Joints: Chronic high blood sugar can increase inflammation in the body, worsening conditions like osteoarthritis and rheumatoid arthritis
Understanding how diabetes affects these organs highlights the importance of managing blood sugar levels not just for glucose control but for overall health. Each organ has its own vulnerability to the effects of insulin resistance, but proactive lifestyle changes can help reduce the impact across the body.
The good news is type 2 diabetes is preventable and reversible through diet and lifestyle changes.
Why Keeping Your A1C in Range Matters
Keeping your A1C in a healthy range (below 5%) is crucial because it:
Reduces Risk of Complications: The higher your A1C, the higher your chances of developing complications like heart disease, stroke, kidney failure, nerve damage, thyroid conditions, infertility, vision problems and autoimmune diseases. These risks are significantly lowered when your A1C stays in range.
Boosts Energy and Vitality: When blood sugar levels are stable, your energy levels are more consistent, and you're less likely to experience those energy-draining highs and lows. This can lead to better mood, improved focus, and overall vitality.
Helps with Weight Management: Keeping your blood sugar levels in check helps prevent cravings, binge eating, and the blood sugar rollercoaster that can lead to weight gain, especially in people with insulin resistance.
Supports Longevity: Studies show that people with well-controlled blood sugar tend to live longer, healthier lives with a reduced risk of chronic illnesses. Essentially, managing your A1C well today sets you up for a more vibrant future.
How Can You Keep Your A1C in Range?
A1C levels can be managed through healthy lifestyle choices. Here are some key strategies:
Eat a Balanced Diet: Focus on whole foods, fiber-rich vegetables, dark leafy greens, lean proteins, and healthy fats. Avoid processed sugar and refined carbs. Limit 'naturally sweet' foods like fruit and honey—yes, unfortunately your blood sugar still spikes after eating these 'natural' foods if you have insulin resistance.
Exercise Regularly: Physical activity helps your body use insulin more effectively, which can lower your blood sugar levels. Muscle training in particular helps lower A1C by increasing insulin sensitivity, allowing muscles to use glucose more effectively, and reducing blood sugar levels.
Manage Stress: Chronic stress can spike blood sugar levels. Practices like meditation, yoga, and deep breathing can help.
Monitor Blood Sugar: Keep an eye on your daily blood sugar levels to understand how your body responds to certain foods and activities. The easiest way to do that is by wearing a Continuous Glucose Monitor (CGM). Send me a message to find out how to get a CGM prescription.
Supplementation: "You can't out-supplement a bad diet." However, a lot of people with insulin resistance tend to be deficient in certain vitamins. More on that in our next article.
Detox/Metabolic Reset Protocols: There are many programs and books to heal the insulin receptors.
You intelligent body is designed to heal if you take away inflammation!
A1C is a critical indicator of your long-term blood sugar control and metabolic health. Keeping it in range is essential for preventing serious complications, boosting your energy, and living a healthier, longer life. Through diet and exercise, keeping those levels steady is one of the best things you can do for your health and vitality.
Please note: This information is for educational purposes only and is not intended as a substitute for medical care. Always consult with your healthcare provider for advice before you begin taking new supplements. You are responsible for all of the health choices you make.
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