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What is a Normal Blood Sugar Level? Understanding the Blood Sugar Chart
18 Sep 2025 By Sandeep R. Pagali, M.D., M.P.H.

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What is a Normal Blood Sugar Level? Understanding the Blood Sugar Chart

Understanding your blood sugar levels is essential for maintaining good health, especially if you have diabetes or are at risk. This article will explain what normal blood sugar levels are, how they are measured, and what to do if your blood sugar is too high or too low. We’ll also provide a comprehensive blood sugar chart to help you easily interpret your readings.

Why Blood Sugar Levels Matter

Blood sugar, or glucose, is the primary source of energy for our bodies. It comes from the food we eat. Insulin, a hormone produced by the pancreas, helps glucose from food get into our cells to be used for energy.

When you have diabetes, your body either doesn't make enough insulin or can't effectively use the insulin it produces. This leads to high blood sugar levels (hyperglycemia). Conversely, low blood sugar levels (hypoglycemia) can occur if you take too much insulin, skip meals, or exercise strenuously without enough food.

Maintaining stable blood glucose levels is critical because consistently high or low levels can lead to serious health complications, including:

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

What is a Normal Blood Sugar Level?

Normal blood sugar ranges vary slightly depending on when you test (fasting, before meals, after meals) and your individual circumstances. General guidelines are as follows: The Secret To Blood Sugar Balance Isn T A Diet It S This

  • Fasting Blood Sugar: This is the level measured after not eating for at least 8 hours.
  • Before Meals: This is the level you aim for before eating.
  • After Meals (1-2 hours): This is the level measured 1-2 hours after starting a meal.

It’s essential to consult with your healthcare provider to determine the most appropriate blood sugar targets for you, as these targets can be individualized based on factors such as age, duration of diabetes, and overall health.

Blood Sugar Chart: Target Ranges for People Without Diabetes

Measurement Normal Range (mg/dL)
Fasting Blood Sugar 70-99 mg/dL
Before Meals 70-100 mg/dL
After Meals (1-2 hours) Less than 140 mg/dL

Blood Sugar Chart: Target Ranges for People With Diabetes

These are general targets; your individual targets may be different, as determined by your healthcare provider.

Measurement Target Range (mg/dL)
Fasting Blood Sugar 80-130 mg/dL
Before Meals 80-130 mg/dL
After Meals (1-2 hours) Less than 180 mg/dL

Understanding A1C

The A1C test provides an average of your blood sugar levels over the past 2-3 months. It's a crucial tool for managing diabetes.

  • Normal A1C: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or higher

The A1C target for people with diabetes is often below 7%, but your healthcare provider may recommend a different target depending on your individual needs.

How to Check Your Blood Sugar

There are two primary ways to check your blood sugar levels:

  1. Using a Blood Glucose Meter: This involves pricking your finger with a lancet, placing a drop of blood on a test strip, and inserting the strip into the meter to get a reading. This is a convenient way to monitor your blood sugar levels at home.

  2. Continuous Glucose Monitoring (CGM): A CGM is a device that continuously tracks your blood glucose levels throughout the day and night. It involves inserting a small sensor under the skin, which measures glucose levels in the interstitial fluid. CGMs provide real-time data and can alert you when your blood sugar is trending too high or too low.

What to Do if Your Blood Sugar is Too High (Hyperglycemia)

If your blood sugar is consistently high, it’s crucial to take action. Here are some steps you can take:

  • Check your medication: Ensure you’re taking the correct dose and at the right time.
  • Adjust your diet: Limit carbohydrates and sugary drinks. Focus on consuming whole, unprocessed foods.
  • Increase physical activity: Exercise helps lower blood sugar levels.
  • Stay hydrated: Drink plenty of water to help flush out excess glucose.
  • Contact your doctor: If your blood sugar remains high despite these measures, seek medical advice.

What to Do if Your Blood Sugar is Too Low (Hypoglycemia)

Low blood sugar can be dangerous and requires immediate treatment. Common symptoms include: Surprising Factors Affecting Your Blood Sugar You May Not Know

  • Shakiness
  • Sweating
  • Dizziness
  • Confusion
  • Rapid heartbeat

If you experience these symptoms, follow the "15-15 rule":

  1. Consume 15 grams of fast-acting carbohydrates (e.g., glucose tablets, juice, regular soda).
  2. Wait 15 minutes and recheck your blood sugar.
  3. If your blood sugar is still below 70 mg/dL, repeat the process.

Once your blood sugar is back within the normal range, eat a small snack or meal to prevent it from dropping again. If you experience severe symptoms or are unable to treat yourself, seek immediate medical attention.

Tips for Maintaining Healthy Blood Sugar Levels

Here are some essential tips for maintaining healthy blood sugar levels:

  • Eat a balanced diet: Focus on whole foods, lean proteins, and healthy fats.
  • Monitor carbohydrate intake: Pay attention to the types and amounts of carbohydrates you consume.
  • Exercise regularly: Aim for at least 30 minutes of moderate-intensity exercise most days of the week.
  • Manage stress: Practice stress-reduction techniques, such as yoga, meditation, or deep breathing exercises.
  • Get enough sleep: Aim for 7-8 hours of quality sleep each night.
  • Regularly monitor your blood sugar: Checking your blood glucose levels regularly will help you understand how different factors, such as food, exercise, and medication, affect your levels.
  • Work with your healthcare team: Collaborate with your doctor, diabetes educator, and registered dietitian to develop a personalized management plan.

Conclusion

Understanding your blood sugar and maintaining healthy levels is crucial for overall well-being. By regularly monitoring your levels, following a healthy lifestyle, and working closely with your healthcare team, you can effectively manage your blood sugar and reduce your risk of diabetes-related complications. Use the blood sugar chart provided in this article as a reference, but always prioritize the advice of your healthcare provider for personalized recommendations. By taking proactive steps to manage your blood sugar, you can live a healthier and more fulfilling life. ``` The One Habit That Improves Control Of Your Blood Sugar Levels

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