Your Complete Blood Sugar Levels Chart by Age (and What It Means for You)

23 Aug 2025

Your Complete Blood Sugar Levels Chart by Age (and What It Means for You) Understanding your blood sugar levels is crucial for maintaining overall hea...

Your Complete Blood Sugar Levels Chart by Age (and What It Means for You)

Understanding your blood sugar levels is crucial for maintaining overall health and preventing diabetes. Whether you're managing a pre-existing condition or simply want to be proactive, this article provides a comprehensive blood sugar levels chart by age, explaining what these numbers mean and how they affect you. We'll cover normal ranges, what to do if your levels are high or low, and lifestyle changes you can make to keep your blood sugar in check. Let's dive in!

What are Blood Sugar Levels?

Blood sugar, also known as blood glucose, refers to the concentration of glucose in your blood. Glucose is your body's primary source of energy, and it comes from the food you eat. Your pancreas produces a hormone called insulin, which helps glucose move from your bloodstream into your cells to be used for energy.

When your blood sugar levels are too high (hyperglycemia) or too low (hypoglycemia), it can lead to various health problems. This makes monitoring your blood sugar vital, especially if you have risk factors for diabetes.

Blood Sugar Levels Chart by Age: Understanding the Numbers

Blood sugar levels are typically measured in milligrams per deciliter (mg/dL) or millimoles per liter (mmol/L). Different factors can influence blood sugar, including age, diet, physical activity, and certain medical conditions. Here's a general chart outlining target blood sugar levels by age:

Normal Blood Sugar Levels

Age Group Fasting **Blood Sugar** (mg/dL) 2 Hours After Eating (mg/dL) A1C (%)
Children (6-12 years) 80-120 Less than 140 Less than 7.5% (Consult Doctor)
Teenagers (13-19 years) 70-150 Less than 140 Less than 7.5% (Consult Doctor)
Adults (20-59 years) 70-99 Less than 140 Less than 5.7%
Seniors (60+ years) 80-140 Less than 160 Less than 7.0% (Consult Doctor)

Important Notes:

  • Fasting Blood Sugar: Measured after at least 8 hours of fasting (no food or caloric beverages).
  • 2 Hours After Eating: Measured two hours after the start of a meal.
  • A1C: Reflects your average blood sugar over the past 2-3 months. It’s a crucial marker for long-term diabetes management. A higher A1C percentage means higher average blood sugar levels.
  • Consult a Doctor: These values are general guidelines. It’s essential to consult a healthcare professional for personalized targets, especially if you have diabetes or other health conditions.

What High Blood Sugar (Hyperglycemia) Means

Hyperglycemia occurs when your blood sugar levels are too high. Consistent high blood sugar can lead to serious health complications, including:

  • Heart disease
  • Nerve damage (neuropathy)
  • Kidney damage (nephropathy)
  • Eye damage (retinopathy)

Symptoms of Hyperglycemia:

  • Increased thirst
  • Frequent urination
  • Blurred vision
  • Fatigue
  • Slow-healing sores

Causes of Hyperglycemia:

  • Diabetes (type 1, type 2, or gestational)
  • Poor diet choices (high in sugars and carbohydrates)
  • Lack of physical activity
  • Illness
  • Stress
  • Certain medications

What to Do if Your Blood Sugar is High

  1. Check Your Blood Sugar Regularly: Monitor your levels as advised by your healthcare provider.
  2. Adjust Your Diet: Reduce your intake of sugary and processed foods. Focus on a balanced diet with whole grains, lean proteins, and plenty of vegetables.
  3. Stay Hydrated: Drink plenty of water to help your kidneys flush out excess glucose.
  4. Exercise Regularly: Physical activity helps lower blood sugar levels and improves insulin sensitivity.
  5. Follow Your Medication Plan: If you take insulin or oral medications for diabetes, follow your prescribed dosage and timing.
  6. Contact Your Doctor: If your blood sugar remains consistently high despite lifestyle adjustments, consult your doctor for further evaluation and treatment.

What Low Blood Sugar (Hypoglycemia) Means

Hypoglycemia occurs when your blood sugar levels are too low. This can be dangerous, as glucose is essential for brain function.

Symptoms of Hypoglycemia:

Related reading: The Ultimate Guide To Understanding Your Blood Glucose Test Results

  • Shakiness
  • Sweating
  • Dizziness
  • Confusion
  • Hunger
  • Irritability
  • Rapid heartbeat
  • Blurred vision
  • Loss of consciousness (severe cases)

Related reading: Fasting Blood Sugar Vs A1C Which Test Is A Better Indicator Of Your Health

Causes of Hypoglycemia:

  • Diabetes medications (especially insulin)
  • Skipping meals
  • Excessive alcohol consumption
  • Intense exercise
  • Certain medical conditions

What to Do if Your Blood Sugar is Low

  1. The 15-15 Rule: If your blood sugar is low, eat or drink 15 grams of fast-acting carbohydrates (such as glucose tablets, fruit juice, or regular soda).
  2. Wait 15 Minutes: Check your blood sugar again after 15 minutes.
  3. Repeat If Necessary: If your blood sugar is still below 70 mg/dL, repeat the 15-15 rule.
  4. Eat a Snack or Meal: Once your blood sugar is back in the normal range, eat a snack or meal to prevent it from dropping again.
  5. Carry Glucose Tablets: Always carry glucose tablets or a similar fast-acting carbohydrate with you, especially if you have diabetes.
  6. Inform Others: Let friends, family, and coworkers know how to recognize and treat hypoglycemia in case you need assistance.
  7. Consult Your Doctor: If you experience frequent or severe episodes of hypoglycemia, consult your doctor to adjust your medication or treatment plan.

Maintaining Healthy Blood Sugar Levels: Lifestyle Changes

Related reading: Normal Blood Sugar Levels For Non Diabetics What Your Results Mean

Several lifestyle changes can help you maintain healthy blood sugar levels and reduce your risk of diabetes:

  1. Balanced Diet: Focus on a diet rich in whole grains, lean proteins, healthy fats, and plenty of fruits and vegetables. Limit sugary drinks, processed foods, and refined carbohydrates.
  2. Regular Exercise: Aim for at least 150 minutes of moderate-intensity exercise per week. Physical activity helps improve insulin sensitivity and lower blood sugar levels.
  3. Weight Management: Maintaining a healthy weight can significantly improve your blood sugar control and reduce your risk of type 2 diabetes.
  4. Stress Management: Practice stress-reducing activities such as yoga, meditation, or deep breathing exercises. Stress can impact blood sugar levels.
  5. Adequate Sleep: Aim for 7-8 hours of quality sleep each night. Lack of sleep can affect insulin sensitivity and blood sugar control.
  6. Regular Monitoring: If you have diabetes or risk factors for diabetes, monitor your blood sugar levels regularly as advised by your healthcare provider.
  7. Hydration: Drink plenty of water throughout the day to help your kidneys function properly and maintain healthy blood sugar levels.
  8. Limit Alcohol Consumption: Alcohol can affect blood sugar levels, especially if you have diabetes. Drink in moderation and always consume it with food.
  9. Quit Smoking: Smoking can increase your risk of insulin resistance and type 2 diabetes.

Understanding A1C and its Importance

The A1C test measures your average blood sugar level over the past 2-3 months. It provides a more comprehensive picture of your blood sugar control than a single fasting blood sugar test. Here’s what A1C levels typically indicate:

  • Normal: Less than 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or higher

For individuals with diabetes, the target A1C level is generally less than 7.0%, but this may vary depending on individual circumstances. Regular A1C testing is crucial for managing diabetes and preventing long-term complications.

Medications for Blood Sugar Management

If lifestyle changes are not enough to manage your blood sugar levels, your doctor may prescribe medication. There are several types of medications available, including:

  • Insulin: Used to replace or supplement your body's own insulin production.
  • Metformin: Helps improve insulin sensitivity and reduce glucose production in the liver.
  • Sulfonylureas: Stimulate the pancreas to release more insulin.
  • GLP-1 Receptor Agonists: Help lower blood sugar levels and may promote weight loss.
  • SGLT2 Inhibitors: Help the kidneys remove excess glucose from the body.

It's essential to work closely with your healthcare provider to determine the best medication or combination of medications for your individual needs.

The Role of Continuous Glucose Monitoring (CGM)

Continuous Glucose Monitoring (CGM) systems are devices that track your blood sugar levels continuously throughout the day and night. They provide real-time data and trends, allowing you to make informed decisions about your diet, exercise, and medication.

CGM systems can be particularly helpful for individuals with type 1 diabetes or those who require multiple daily insulin injections. They can also help prevent hypoglycemia and hyperglycemia by alerting you when your blood sugar levels are too high or too low.

Conclusion: Take Control of Your Blood Sugar

Understanding your blood sugar levels is essential for maintaining optimal health and preventing diabetes-related complications. By following the guidelines in this article, monitoring your blood sugar regularly, making healthy lifestyle choices, and working closely with your healthcare provider, you can take control of your blood sugar and live a healthier, more fulfilling life. Remember, proactive management is key to long-term well-being. Always consult with your doctor for personalized advice and treatment.