About prediabetes

    Prediabetes: What It Is and How to Catch It Early

    Learn the common symptoms and key risk factors for prediabetes—so you can take action before it turns into type 2 diabetes.

    Prediabetes is a blood sugar level that’s higher than normal but not high enough to be diabetes. It often means your body is starting to use insulin less effectively. Results can vary by person, partly due to differences in gut microbiome balance and how your body responds to food.

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    How prediabetes works

    Your body uses insulin to move glucose from the blood into cells for energy. In prediabetes, cells don’t respond as well to insulin, so glucose stays higher for longer. Over time, the pancreas may work harder to compensate.

    Your gut also plays a role. Microbes break down food and produce compounds that can affect inflammation and how the body processes carbs. When gut balance shifts, it may support worse insulin sensitivity or affect how quickly sugars enter the bloodstream.

    Common test results include elevated fasting glucose, A1C (average blood sugar), or an abnormal oral glucose tolerance test. These patterns show the “early” stage where metabolic control is starting to slip.

    Why it matters for your health

    Prediabetes can affect energy and metabolism by causing blood sugar swings. When sugars rise quickly and insulin can’t keep up, you may feel tired after meals or crave more carbs. Over time, higher glucose can also strain blood vessels and nerves.

    It matters most because it raises long-term risk. Many people with prediabetes develop type 2 diabetes without changes. The good news: lifestyle shifts can improve insulin sensitivity and often bring blood sugar closer to normal.

    Digestion can be part of the picture too. Gut changes that influence inflammation and appetite hormones may make blood sugar harder to manage, especially with high-sugar or highly processed foods.

    What affects prediabetes?

    - Diet / food: High added sugars, refined carbs, and large portions can raise glucose.
    - Gut microbiome: Microbe balance influences inflammation, fiber breakdown, and gut-brain signals.
    - Lifestyle (sleep, stress): Poor sleep and chronic stress can raise stress hormones that affect insulin.
    - Biological factors: Genetics, age, and body fat distribution (especially visceral fat) raise risk.

    Why prediabetes differs per person

    Two people can have the same lab results and different drivers. Gut microbiome composition varies across individuals, which can change how you digest fiber, absorb nutrients, and respond to carbohydrates. Genetics also influence insulin production and insulin sensitivity.

    Lifestyle differences matter too, including meal timing, activity level, stress load, and sleep quality. A plan that works for one person may not match another because the underlying biology and gut responses are not identical.

    2-minute self-check Is a gut microbiome test useful for you? Answer a few quick questions and find out if a microbiome test is actually useful for you. ✔ Takes 2 minutes ✔ Based on your symptoms & lifestyle ✔ Clear yes/no recommendation Check if a test is right for me
    If you’re trying to understand your personal risk, measurements beyond standard blood sugar can add context. A gut microbiome-focused assessment may help identify digestion and inflammation factors that influence glucose control, supporting more personalized nutrition choices. Consider discussing testing options with a qualified clinician.

    Insulin Resistance: What It Is, Symptoms, and How to Improve It

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    Blood Sugar: What It Is, Normal Ranges & Why It Matters

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    Glycemic Index (GI): What It Is and How It Affects Blood Sugar

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