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Normal Blood Sugar Levels Chart by Age: What's Right for You?

04 Sep 2025 by Marc R. Matthews, M.D.

Normal Blood Sugar Levels Chart by Age: What's Right for You?

Understanding your blood sugar levels is crucial for maintaining good health, especially as you age. But what’s considered “normal” can vary based on factors like age, whether you have diabetes, and even the time of day. This article breaks down the normal blood sugar levels by age, helping you stay informed and take proactive steps for your well-being. Understanding Blood Sugar Diagnosis Levels From Normal To Diabetes Range

Why Blood Sugar Levels Matter

Blood sugar, or glucose, is your body's primary source of energy. It comes from the food you eat. When you have diabetes (either type 1, type 2, or gestational), or even prediabetes, it means your body is not able to regulate blood sugar effectively, which can lead to numerous health problems over time. Maintaining healthy blood sugar levels is key to preventing complications such as heart disease, kidney disease, nerve damage, and vision problems. Regular monitoring and lifestyle adjustments can make a significant difference. Understanding Your Blood Sugar Test Results Mg Dl Vs Mmol L

Understanding Blood Sugar Readings

Before we dive into the chart, let’s understand the key measurements:

  • Fasting Blood Sugar (FBS): Measured after at least 8 hours of fasting (usually first thing in the morning).
  • Postprandial Blood Sugar (PPBS): Measured 1-2 hours after eating a meal.
  • A1C (Glycated Hemoglobin): A blood test that reflects your average blood sugar levels over the past 2-3 months. It's an important measure for long-term blood sugar control.
  • Random Blood Sugar (RBS): Blood sugar tested at any time of day, without regard to meals.

Normal Blood Sugar Levels Chart by Age

This chart provides a general guideline. Always consult with your doctor for personalized advice.

Age Group Fasting Blood Sugar (mg/dL) Postprandial Blood Sugar (mg/dL, 1-2 hours after meal) A1C (%)
Children (Under 6 years) 80-200 Up to 200 Less than 7.5%
Children (6-12 years) 80-180 Up to 180 Less than 7.0%
Teenagers (13-19 years) 70-150 Up to 140 Less than 7.0%
Adults (20-59 years) (No Diabetes) 70-99 Less than 140 Less than 5.7%
Adults (60+ years) (No Diabetes) 80-110 Less than 160 Less than 7.0%
Adults (With Diabetes) 80-130 Less than 180 Less than 7.0% (as advised by doctor)

Important Considerations:

  • Individual Variation: These are general guidelines. Your individual target range may vary. Talk to your healthcare provider about what's right for you.
  • Pregnancy: Blood sugar levels are typically monitored more closely during pregnancy due to gestational diabetes. Target ranges may be different.
  • Age-Related Changes: As we age, our bodies may become less efficient at processing glucose, which is why the ranges for older adults may be slightly different.
  • Medications: Certain medications can affect blood sugar levels.

Blood Sugar Levels for People with Diabetes

If you have diabetes, your target blood sugar levels will likely be different from those without diabetes. The American Diabetes Association (ADA) generally recommends the following for most adults with diabetes:

  • Fasting Blood Sugar: 80-130 mg/dL
  • Postprandial Blood Sugar (1-2 hours after starting a meal): Less than 180 mg/dL
  • A1C: Less than 7.0% (or as advised by your doctor)

However, individual goals can vary based on several factors, including age, other health conditions, and how long you’ve had diabetes. Regular consultations with your healthcare provider are crucial for personalized management.

What to Do if Your Blood Sugar is Too High or Too Low

  • High Blood Sugar (Hyperglycemia): Symptoms can include increased thirst, frequent urination, blurred vision, and fatigue. If your blood sugar is consistently high, consult your doctor. They may adjust your medication, diet, or exercise plan.
  • Low Blood Sugar (Hypoglycemia): Symptoms can include shakiness, sweating, confusion, dizziness, and hunger. If you experience low blood sugar, immediately consume a quick source of glucose, such as juice, hard candy, or glucose tablets. Then, follow up with a longer-acting carbohydrate snack (like crackers or a piece of fruit).

Tips for Maintaining Healthy Blood Sugar Levels

Regardless of age, several lifestyle factors can help you maintain healthy blood sugar levels: How To Convert Your A1C To Blood Sugar Using Our Eag Calculator

  1. Eat a Balanced Diet: Focus on whole grains, lean proteins, fruits, and vegetables. Limit processed foods, sugary drinks, and excessive amounts of carbohydrates.
  2. Regular Exercise: Physical activity helps your body use insulin more efficiently. Aim for at least 150 minutes of moderate-intensity exercise per week.
  3. Monitor Your Blood Sugar Regularly: If you have diabetes, regular monitoring is essential. Even if you don’t have diabetes, periodic checks can help you identify potential issues early.
  4. Stay Hydrated: Drink plenty of water throughout the day.
  5. Manage Stress: Stress can affect blood sugar levels. Practice relaxation techniques such as yoga, meditation, or deep breathing exercises.
  6. Get Enough Sleep: Poor sleep can also impact blood sugar levels. Aim for 7-8 hours of quality sleep each night.
  7. Follow Your Doctor’s Advice: Work with your healthcare provider to create a personalized plan for managing your blood sugar.

Conclusion

Understanding normal blood sugar levels by age is a vital step toward maintaining good health. While the charts and information provided here offer general guidance, remember that individual needs vary. Regular monitoring, a healthy lifestyle, and consistent communication with your healthcare provider are key to effectively managing your blood sugar levels and preventing potential health complications. Take control of your health today!

References and Further Reading