The Complete Blood Sugar Levels Chart by Age (For Non-Diabetics & Diabetics)

23 Aug 2025

The Complete Blood Sugar Levels Chart by Age (For Non-Diabetics & Diabetics) Understanding your blood sugar levels is vital for maintaining overal...

The Complete Blood Sugar Levels Chart by Age (For Non-Diabetics & Diabetics)

Understanding your blood sugar levels is vital for maintaining overall health, regardless of age or whether you have diabetes. Blood glucose (sugar) is the primary source of energy for your body, and keeping it within a healthy range is crucial. This comprehensive guide provides a blood sugar levels chart tailored by age, differentiating between non-diabetics and individuals with diabetes. We'll delve into what these numbers mean, how to monitor your blood sugar, and when to seek medical advice.

Why Monitor Blood Sugar Levels?

Monitoring your blood sugar provides essential insights into how well your body is processing glucose. For non-diabetics, regular monitoring can help identify prediabetes and allow for lifestyle changes to prevent the onset of type 2 diabetes. For diabetics, consistent monitoring is paramount for managing the condition, avoiding complications, and adjusting medication and diet as needed. Ignoring blood sugar management can lead to serious health consequences, including heart disease, kidney problems, nerve damage (neuropathy), and vision loss.

Blood Sugar Levels Chart by Age: Non-Diabetics

The following chart outlines the typical blood sugar levels for non-diabetic individuals across different age groups. These values are generally accepted as healthy targets. Remember that individual results can vary, and consulting with a healthcare professional for personalized advice is always recommended.

Age Group Fasting Blood Sugar (mg/dL) 2 Hours After Eating (mg/dL)
Children (Under 18) 70-100 Less than 140
Adults (18-60) 70-100 Less than 140
Seniors (60+) 70-110 Less than 140

Note: These are general guidelines. Consult with your doctor for personalized target ranges.

Fasting Blood Sugar: Measured after at least eight hours of not eating. It provides a baseline assessment of how well your body regulates blood sugar overnight.

2 Hours After Eating: Indicates how well your body processes glucose after a meal.

Blood Sugar Levels Chart by Age: Diabetics

For individuals with diabetes, blood sugar management requires a more stringent approach. The following chart outlines target ranges that are generally recommended for diabetics. Keep in mind that these targets may be adjusted by your doctor based on individual needs and health conditions.

Age Group Fasting Blood Sugar (mg/dL) 2 Hours After Eating (mg/dL) HbA1c (%)
Children (Under 18) 70-150 (individualized) Up to 180 (individualized) Varies, discuss with doctor
Adults (18-60) 80-130 Less than 180 Less than 7.0% (often individualized)
Seniors (60+) 80-150 (may be higher depending on overall health) Less than 180 (may be higher depending on overall health) Varies, discuss with doctor

Note: These are general guidelines. Consult with your doctor for personalized target ranges. For seniors, target ranges may be less strict to prevent hypoglycemia (low blood sugar).

HbA1c: Hemoglobin A1c is a blood test that reflects average blood sugar levels over the past 2-3 months. It gives a broader picture of blood sugar control than a single fasting or post-meal reading. Maintaining a healthy A1c is crucial for preventing long-term complications of diabetes.

How to Monitor Blood Sugar Levels

There are several methods for monitoring blood sugar levels:

  • Blood Glucose Meter: This involves pricking your finger and applying a drop of blood to a test strip that is inserted into the meter. The meter provides a reading of your current blood sugar level.
  • Continuous Glucose Monitor (CGM): A CGM is a small device inserted under the skin that continuously measures glucose levels in the interstitial fluid. It transmits data to a receiver or smartphone, providing real-time glucose readings and trends.
  • HbA1c Test: As mentioned above, this blood test provides an average blood sugar reading over the past 2-3 months and is typically performed in a doctor's office.

The choice of monitoring method depends on individual needs, lifestyle, and diabetes management plan. Many people with diabetes use a combination of methods for comprehensive blood sugar management.

What Affects Blood Sugar Levels?

Many factors can influence blood sugar levels, including:

Related reading: Hyperglycemia 101 Signs Causes And Serious Complications

  • Food: The type and amount of food you eat significantly impact your blood sugar. Carbohydrates are broken down into glucose, raising blood sugar levels.
  • Physical Activity: Exercise can lower blood sugar levels by increasing insulin sensitivity and helping the body use glucose for energy.
  • Medications: Insulin and other diabetes medications can lower blood sugar levels. Certain other medications can also affect blood sugar.
  • Stress: Stress hormones can raise blood sugar levels.
  • Illness: Being sick can also cause blood sugar levels to fluctuate.
  • Dehydration: Lack of adequate hydration can impact blood sugar readings.
  • Time of Day: Blood sugar levels naturally fluctuate throughout the day due to hormonal changes.

Related reading: Impaired Fasting Glucose Understanding Your Prediabetes Diagnosis

Understanding these factors can help you make informed choices to manage your blood sugar effectively.

Symptoms of High and Low Blood Sugar

Related reading: Why Does My Blood Sugar Spike Understanding And Controlling Fluctuations

Recognizing the symptoms of high (hyperglycemia) and low (hypoglycemia) blood sugar is crucial for taking timely action and preventing serious complications.

Symptoms of Hyperglycemia (High Blood Sugar):

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

Symptoms of Hypoglycemia (Low Blood Sugar):

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

If you experience any of these symptoms, check your blood sugar levels immediately. If you have diabetes, follow your doctor's instructions for managing high or low blood sugar. If you don't have diabetes and experience these symptoms regularly, consult a doctor.

When to Seek Medical Advice

Consult with a healthcare professional if:

  • You experience frequent or unexplained fluctuations in your blood sugar levels.
  • You have symptoms of diabetes (increased thirst, frequent urination, unexplained weight loss, fatigue).
  • You are concerned about your risk of developing diabetes.
  • You have difficulty managing your blood sugar despite following your diabetes management plan.
  • You experience severe symptoms of hyperglycemia or hypoglycemia.
  • Your A1c test results are consistently outside your target range.
  • You are considering making significant changes to your diet or exercise routine.

A doctor can provide personalized advice, adjust medications, and recommend lifestyle modifications to help you effectively manage your blood sugar levels and prevent complications.

Conclusion

Maintaining healthy blood sugar levels is essential for everyone, but particularly critical for individuals with diabetes. By understanding the target ranges for your age group and health status, regularly monitoring your blood sugar, and making informed lifestyle choices, you can take control of your health and reduce your risk of diabetes-related complications. Always consult with a healthcare professional for personalized guidance and treatment.