What Should My Blood Sugar Be? A Guide for Non-Diabetics
Understanding your blood sugar levels is important, even if you don't have diabetes. Knowing the healthy range can help you monitor your overall health and detect potential issues early. This guide breaks down what normal blood sugar levels look like for non-diabetics, what factors can influence those levels, and when you might want to consult a doctor.
Why Monitor Blood Sugar if You're Not Diabetic?
While blood sugar monitoring is crucial for people with diabetes, understanding your own levels is beneficial even if you are not diagnosed with the condition. Keeping track of your blood glucose can:
- Provide insights into how your body processes food.
- Help you identify potential pre-diabetic conditions.
- Motivate healthier lifestyle choices related to diet and exercise.
- Give you a baseline for comparison if you ever suspect problems in the future.
What are Normal Blood Sugar Levels for Non-Diabetics?
Normal blood sugar levels vary depending on when you measure them:
- Fasting Blood Sugar: Measured after at least eight hours of not eating. For non-diabetics, a normal fasting blood sugar level is typically between 70 mg/dL and 100 mg/dL.
- Postprandial Blood Sugar: Measured one to two hours after eating. A healthy postprandial blood sugar for non-diabetics is generally less than 140 mg/dL.
Here's a quick overview table:
Measurement | Normal Range (Non-Diabetic) |
---|---|
Fasting Blood Sugar | 70-100 mg/dL |
Postprandial (1-2 hours after eating) | Less than 140 mg/dL |
Factors That Can Affect Blood Sugar
Even in non-diabetics, several factors can influence blood sugar levels:
- Diet: High-carbohydrate foods and sugary drinks can cause temporary spikes in blood sugar.
- Exercise: Physical activity can lower blood sugar levels as your muscles use glucose for energy.
- Stress: Stress hormones can raise blood sugar.
- Sleep: Poor sleep can impact hormone levels and increase blood glucose.
- Medications: Some medications, like corticosteroids, can increase blood sugar.
- Illness: Infections or other illnesses can also lead to temporary increases in blood sugar.
- Dehydration: When dehydrated, the glucose concentration in your blood can appear higher.
How to Test Your Blood Sugar at Home
While a doctor’s visit provides the most accurate assessment, you can use an over-the-counter blood glucose meter to check your blood sugar at home. Here’s how:
- Gather Your Supplies: You’ll need a blood glucose meter, test strips that are compatible with your meter, a lancing device, and alcohol swabs.
- Wash Your Hands: Clean your hands thoroughly with soap and water.
- Prepare the Lancing Device: Insert a new lancet into the lancing device.
- Choose a Finger: Prick the side of your fingertip with the lancing device.
- Apply Blood to the Test Strip: Gently squeeze a drop of blood onto the test strip.
- Insert the Strip into the Meter: Follow the meter’s instructions to insert the test strip.
- Read the Results: The meter will display your blood sugar level.
- Dispose of Materials Safely: Properly dispose of the lancet and test strip.
Remember that home testing can be affected by several factors, so it's essential to follow the instructions carefully. Also, discuss any concerns with your doctor.
When to See a Doctor
While occasional fluctuations in blood sugar are normal, certain signs and symptoms warrant a visit to the doctor:
- Consistently High Readings: Repeated fasting blood sugar levels above 100 mg/dL, even without a diabetes diagnosis.
- Frequent Urination: Especially at night (nocturia).
- Increased Thirst: Feeling unusually thirsty despite drinking fluids.
- Unexplained Weight Loss: Losing weight without making changes to your diet or exercise routine.
- Blurred Vision: Changes in vision that come and go.
- Slow-Healing Sores: Cuts or sores that take a long time to heal.
- Fatigue: Feeling unusually tired or weak.
These symptoms could indicate pre-diabetes or other underlying health issues that need to be addressed. Your doctor can perform further testing, such as an A1C test, to assess your average blood sugar levels over the past few months and determine if you are at risk for diabetes.
Tips for Maintaining Healthy Blood Sugar
Even if you don't have diabetes, adopting healthy habits can help keep your blood sugar levels stable and prevent future problems:
- Eat a Balanced Diet: Focus on whole foods, including fruits, vegetables, lean protein, and whole grains. Limit processed foods, sugary drinks, and excessive carbohydrates.
- Stay Active: Regular physical activity helps improve insulin sensitivity and lower blood sugar. Aim for at least 30 minutes of moderate-intensity exercise most days of the week.
- Manage Stress: Find healthy ways to manage stress, such as meditation, yoga, or spending time in nature.
- Get Enough Sleep: Aim for 7-8 hours of quality sleep each night.
- Stay Hydrated: Drink plenty of water throughout the day.
- Monitor Your Weight: Maintaining a healthy weight can help prevent insulin resistance.
- Regular Check-Ups: See your doctor for regular check-ups and screenings, especially if you have a family history of diabetes.
Understanding the Glycemic Index
The Glycemic Index (GI) is a ranking system for carbohydrates based on how quickly they affect your blood sugar levels. Foods with a high GI are rapidly digested and absorbed, causing a significant spike in blood sugar. Foods with a low GI are digested and absorbed more slowly, resulting in a gradual rise in blood sugar.
Here’s a simplified breakdown:
- High GI Foods (70 or more): White bread, white rice, potatoes, sugary drinks.
- Medium GI Foods (56-69): Whole wheat bread, brown rice, sweet potatoes.
- Low GI Foods (55 or less): Most fruits and vegetables, beans, lentils, nuts.
Choosing more low-GI foods can help stabilize blood sugar levels.
Food Type | Glycemic Index (GI) Example | Impact on Blood Sugar |
---|---|---|
High GI | White Bread (around 75) | Rapid increase |
Medium GI | Brown Rice (around 68) | Moderate increase |
Low GI | Apples (around 36) | Slow, gradual increase |
Conclusion

Knowing what your blood sugar should be, even if you're not diabetic, provides valuable insight into your overall health. While occasional fluctuations are normal, consistently high levels, or experiencing related symptoms, warrant medical attention. By adopting a healthy lifestyle, including a balanced diet and regular exercise, you can maintain stable blood sugar levels and prevent potential health issues down the line. Remember to consult your doctor for personalized advice and to address any concerns you may have about your health.