Can't Control Your Blood Sugar? 7 Surprising Reasons Why

23 Aug 2025

Can't Control Your Blood Sugar? 7 Surprising Reasons Why Maintaining healthy blood sugar levels is critical for overall well-being, especially for ind...

Can't Control Your Blood Sugar? 7 Surprising Reasons Why

Maintaining healthy blood sugar levels is critical for overall well-being, especially for individuals with diabetes or prediabetes. However, even with diligent efforts like diet and exercise, achieving stable blood sugar can be challenging. Let’s explore seven surprising reasons why you might be struggling to control your blood sugar and what you can do about it.

1. Hidden Sugars in "Healthy" Foods

Many processed foods, even those marketed as "healthy" or "low-fat," can contain significant amounts of hidden sugars. These sugars, often in the form of high-fructose corn syrup, sucrose, or dextrose, can lead to unexpected blood sugar spikes. Always scrutinize food labels and be wary of:

  • Yogurt: Flavored yogurts, while seemingly healthy, can be loaded with added sugars. Opt for plain yogurt and add your own fruit or a touch of honey.
  • Salad Dressings: Many commercial salad dressings contain high amounts of sugar. Make your own dressings using olive oil, vinegar, and herbs.
  • Granola Bars: These convenient snacks often pack a sugary punch. Look for low-sugar options or make your own at home.
  • Sauces & Condiments: Ketchup, BBQ sauce, and other condiments frequently contain added sugars. Choose sugar-free varieties or use them sparingly.

2. Chronic Stress Levels

Stress is a major contributor to blood sugar fluctuations. When you're stressed, your body releases hormones like cortisol and adrenaline, which can increase glucose production in the liver and reduce the effectiveness of insulin. Manage your stress through:

Related reading: Hypoglycemia Uncovered The Dangers Of Low Blood Sugar

  • Regular Exercise: Physical activity helps lower stress hormones and improve insulin sensitivity.
  • Mindfulness and Meditation: Practices like mindfulness and meditation can reduce stress and improve emotional regulation.
  • Adequate Sleep: Aim for 7-8 hours of quality sleep each night to help your body recover from stress.
  • Social Support: Connect with friends and family to reduce feelings of isolation and build a support network.

3. Dehydration

Staying adequately hydrated is vital for maintaining stable blood sugar. Dehydration can cause your blood to become more concentrated, leading to higher blood sugar levels. Aim to drink at least 8 glasses of water per day. Factors that can increase your water needs include:

Related reading: Understanding Your A1C Levels From Normal To The Prediabetes Range

  • Physical Activity: Exercise increases fluid loss through sweat.
  • Hot Weather: Heat can lead to increased sweating and dehydration.
  • Medical Conditions: Certain medical conditions and medications can increase fluid loss.

4. Artificial Sweeteners

While intended as sugar substitutes, some artificial sweeteners may paradoxically worsen blood sugar control. Research suggests they can affect the gut microbiome, leading to altered glucose metabolism and insulin resistance. More research is needed, but it's worth considering the potential impact of:

  • Aspartame: Found in many diet sodas and sugar-free products.
  • Sucralose: A common artificial sweetener marketed under brand names like Splenda.
  • Saccharin: An older artificial sweetener often found in tabletop packets.
  • Stevia: Generally considered a safer alternative, but still use in moderation.

5. Overconsumption of Refined Carbohydrates

Refined carbohydrates, such as white bread, pasta, and sugary cereals, are quickly broken down into glucose, causing rapid spikes in blood sugar. These foods also often lack fiber, which helps slow down the absorption of glucose. Focus on:

  • Whole Grains: Choose whole wheat bread, brown rice, and quinoa.
  • Legumes: Beans, lentils, and peas are excellent sources of fiber and protein.
  • Non-Starchy Vegetables: Leafy greens, broccoli, and cauliflower have minimal impact on blood sugar.
  • Limit Portions: Even healthy carbohydrates can raise blood sugar if consumed in excess.

6. Certain Medications

Some medications can interfere with blood sugar control. It’s essential to be aware of potential side effects and discuss them with your doctor. Common culprits include:

  • Corticosteroids: Often prescribed for inflammatory conditions.
  • Diuretics: Used to treat high blood pressure.
  • Beta-Blockers: Used for heart conditions and anxiety.
  • Antidepressants: Some antidepressants can affect blood sugar levels.
Medication Type Potential Effect on Blood Sugar What to Discuss with Your Doctor
Corticosteroids Can increase blood sugar levels. Discuss alternative medications, dosage adjustments, or monitoring frequency.
Diuretics May raise blood sugar over time. Inquire about blood sugar monitoring and potential alternative medications.
Beta-Blockers Can mask symptoms of hypoglycemia and potentially increase blood sugar. Discuss potential impact on hypoglycemia awareness and blood sugar regulation.

7. Inconsistent Sleep Patterns

Related reading: Feeling Shaky The Surprising Dangers Of Low Blood Sugar Hypoglycemia

Irregular sleep schedules can disrupt your body’s natural rhythms, including insulin sensitivity and glucose metabolism. Aim for a consistent sleep routine by:

  • Going to Bed and Waking Up at the Same Time: Even on weekends, maintain a consistent sleep schedule.
  • Creating a Relaxing Bedtime Routine: Unwind with a warm bath, reading, or meditation.
  • Optimizing Your Sleep Environment: Ensure your bedroom is dark, quiet, and cool.
  • Limiting Screen Time Before Bed: The blue light emitted from screens can interfere with sleep.

Taking Control of Your Blood Sugar

While these seven surprising reasons can contribute to blood sugar instability, understanding them is the first step towards gaining control. By making informed dietary choices, managing stress, staying hydrated, and prioritizing sleep, you can significantly improve your blood sugar management and overall health. Always consult with your healthcare provider for personalized advice and guidance.