What Are Normal Blood Sugar Levels? (Charts Included by Age)

24 Aug 2025

What Are Normal Blood Sugar Levels? (Charts Included by Age) Understanding normal blood sugar levels is crucial for maintaining good health and preven...

What Are Normal Blood Sugar Levels? (Charts Included by Age)

Understanding normal blood sugar levels is crucial for maintaining good health and preventing complications associated with diabetes. Blood sugar, or glucose, is your body's primary energy source, and keeping it within a healthy range is essential for optimal function. This article will provide a detailed overview of what constitutes normal blood sugar levels, factors that influence these levels, and charts breaking down target ranges by age.

Why Blood Sugar Levels Matter

Maintaining stable blood glucose levels helps ensure your body has a consistent energy supply. When blood sugar levels are consistently too high (hyperglycemia) or too low (hypoglycemia), it can lead to various health problems.

  • Hyperglycemia: Can lead to diabetes, heart disease, kidney disease, nerve damage, and vision problems.
  • Hypoglycemia: Can cause shakiness, sweating, confusion, loss of consciousness, and, in severe cases, seizures.

Regular monitoring and understanding your blood sugar ranges are essential for managing these risks, especially if you have diabetes or are at risk of developing it.

Factors Influencing Blood Sugar Levels

Several factors can affect your blood glucose, including:

Related reading: What Is Hemoglobin A1C Your Guide To A1C Charts And Levels

  • Diet: Carbohydrates in food are broken down into glucose, which raises blood sugar levels.
  • Physical Activity: Exercise helps lower blood sugar levels by allowing your cells to use glucose for energy.
  • Medications: Insulin and other diabetes medications can lower blood sugar.
  • Stress: Stress hormones can increase blood sugar levels.
  • Illness: Infections and other illnesses can affect blood sugar levels.
  • Age: Blood sugar control can change with age due to various physiological changes.

Normal Blood Sugar Levels: The Basics

Normal blood sugar levels are generally defined as:

  • Fasting Blood Sugar: 70-99 mg/dL (milligrams per deciliter)
  • Two Hours After Eating (Postprandial): Less than 140 mg/dL
  • A1C: Less than 5.7%

These ranges are general guidelines, and your doctor may recommend different targets based on your individual health status.

Related reading: Managing Blood Sugar A Complete Guide From Diagnosis To Daily Control

Blood Sugar Levels by Age Group (Charts)

Understanding blood sugar goals varies based on age can help individuals tailor their health management strategies. Below is a detailed breakdown using HTML tables:

Children (Under 6 Years)

Time of Day Target Blood Sugar Range (mg/dL)
Before Meals 100-180
At Bedtime 110-200

Managing pediatric blood sugar requires careful attention due to the child's developmental stage and potential for rapid fluctuations.

Children (6-12 Years)

Time of Day Target Blood Sugar Range (mg/dL)
Before Meals 90-180
At Bedtime 100-180

Adolescent blood sugar control can be impacted by growth spurts and hormonal changes.

Teenagers (13-19 Years)

Time of Day Target Blood Sugar Range (mg/dL)
Before Meals 90-130
At Bedtime 90-150

Adults (20-59 Years) - Without Diabetes

Time of Day Target Blood Sugar Range (mg/dL)
Fasting 70-99
2 Hours After Eating Less than 140

Maintaining adult blood sugar levels within the normal range supports overall health and reduces the risk of developing diabetes.

Adults (20-59 Years) - With Diabetes

Time of Day Target Blood Sugar Range (mg/dL)
Before Meals 80-130
2 Hours After Eating Less than 180
A1C Less than 7%

Seniors (60+ Years) - Without Diabetes

Time of Day Target Blood Sugar Range (mg/dL)
Fasting 70-99
2 Hours After Eating Less than 140

Seniors (60+ Years) - With Diabetes

Time of Day Target Blood Sugar Range (mg/dL)
Before Meals 80-130
2 Hours After Eating Less than 180
A1C Less than 7.5%

Related reading: A1C Vs Fasting Blood Sugar Which Test Reveals More About Your Health

Blood sugar in elderly individuals with diabetes might have slightly different targets to avoid hypoglycemia due to other health concerns.

How to Monitor Blood Sugar Levels

Regular monitoring is vital, especially for people with diabetes. Methods include:

  • Blood Glucose Meter: A small device that measures the glucose in a drop of blood. It provides immediate readings.
  • Continuous Glucose Monitor (CGM): A device that tracks glucose levels continuously through a sensor inserted under the skin.
  • A1C Test: This blood test provides an average of your blood sugar levels over the past 2-3 months.

Talk to your doctor about the best monitoring method for your individual needs. Home blood sugar monitoring empowers you to manage your condition effectively.

Tips for Maintaining Healthy Blood Sugar Levels

Adopting a healthy lifestyle can help you maintain stable glucose levels. Here are some useful tips:

  1. Follow a Balanced Diet: Choose foods low in processed sugars, saturated fats, and refined carbohydrates. Focus on whole grains, lean proteins, and plenty of fruits and vegetables.
  2. Engage in Regular Physical Activity: Aim for at least 150 minutes of moderate-intensity exercise per week.
  3. Stay Hydrated: Drink plenty of water to help your kidneys flush out excess sugar.
  4. Manage Stress: Practice relaxation techniques such as yoga or meditation to help lower stress hormones.
  5. Monitor Your Blood Sugar Regularly: Track your levels and discuss any concerns with your healthcare provider.

When to See a Doctor

Consult your healthcare provider if you experience any of the following:

  • Frequent episodes of high or low blood sugar.
  • Unexplained weight loss or gain.
  • Excessive thirst or urination.
  • Blurry vision.
  • Slow-healing sores or infections.

Your doctor can help you develop a personalized plan to manage your blood sugar control.

Conclusion

Understanding normal blood sugar levels and how to maintain them is key to preventing diabetes-related complications and ensuring optimal health. Regularly monitoring your blood glucose, adopting a healthy lifestyle, and working closely with your healthcare provider can empower you to manage your health effectively, regardless of your age. These blood sugar charts should serve as general guide. It is important to get personalized advice from your physician.