What's a Normal Fasting Blood Sugar Reading?

Understanding your fasting blood sugar level is crucial for maintaining good health and detecting potential issues early. This measurement, typically taken after an overnight fast, provides a snapshot of your blood glucose levels when you haven't eaten for a while. This article aims to demystify what constitutes a normal fasting blood sugar range, why it matters, and what steps you can take if your readings fall outside the healthy zone. We'll also touch upon factors that influence these readings and what specific levels might indicate.

Fasting blood sugar is the concentration of glucose in your blood after you have not eaten for at least 8 hours. It's a key indicator used to screen for and diagnose diabetes or prediabetes. Essentially, your body should be able to keep your blood sugar levels within a narrow range when you are not eating, and it helps assess your body's ability to regulate glucose.

Category	Fasting Blood Sugar Level (mg/dL)	Implications
Normal	70-99	Healthy glucose metabolism.
Prediabetes	100-125	Increased risk of developing type 2 diabetes. Lifestyle changes are advised.
Diabetes	126 or higher	Indicates diabetes. Medical treatment and dietary adjustments are necessary.

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Factors That Can Influence Your Fasting Blood Sugar

Several factors can influence your fasting blood sugar readings, beyond just your current dietary habits. Understanding these nuances can give you a clearer picture of your metabolic health:

1. Stress: Stress hormones like cortisol can increase your blood sugar levels. High levels of stress, whether chronic or acute, can lead to temporary elevations in your readings. This doesn't necessarily mean you have diabetes but underscores the importance of managing stress.

2. Sleep Quality: Poor sleep or lack of sleep can disrupt the hormones that regulate blood sugar, potentially leading to higher fasting readings. Consistently getting enough sleep is crucial for metabolic balance. This is because sleep deprivation can affect insulin sensitivity.

3. Medications: Certain medications, such as corticosteroids and some diuretics, can affect blood sugar levels. If you’re taking medication that could influence your glucose readings, discuss this with your doctor. They can evaluate the medications effect and adjust as necessary.

4. Illness: Infections and illness can cause temporary elevations in blood sugar due to physiological responses that may affect glucose regulation. This is why it’s sometimes not wise to get screened for diabetes when you are sick, unless under the instruction of can low blood sugar kill you a physician.

5. Time of Day: Fasting blood sugar tends to be higher in the early morning hours due to hormonal fluctuations—a phenomenon sometimes known as the "dawn phenomenon." This isn't a cause for concern if your readings remain within the healthy range, but can skew data if measurements are not taken at the same time of day each time.

6. Recent Diet: While the fasting measure is designed to circumvent recent diet, drastic changes in your normal diet just prior to the measurement (like heavy consumption of high carb foods) may skew results. In addition, a highly processed diet can affect overall metabolic function over time.

It's important to note that occasional fluctuations are normal, but consistently high readings are a reason to take action, ideally under the guidance of a medical professional.

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Understanding Different Fasting Blood Sugar Levels: What They Mean

Let's break down the implications of different fasting blood sugar readings to better understand where you might fall and what that signifies:

• Normal (70-99 mg/dL): This is the ideal range. Your body is effectively managing glucose levels during fasting periods, and your insulin response is likely functioning correctly. It's a good indication that your current lifestyle is supporting healthy metabolic function. Maintaining regular check-ups is still important, but this range suggests no immediate concern regarding pre-diabetes or diabetes.
• Prediabetes (100-125 mg/dL): A reading in this range suggests that your body is having trouble regulating blood sugar. Although this may not be considered diabetic yet, this is a sign to adjust your lifestyle and dietary habits to avoid the condition. It is not reversible; if these actions aren’t taken, your risk of type 2 diabetes is significantly increased. This category means your cells are becoming resistant to insulin, which is typically a response from being exposed to excess glucose over an extended period of time.
• Diabetes (126 mg/dL or higher): A reading in this category, confirmed through multiple tests on separate occasions, indicates diabetes. This level means that your body is consistently unable to maintain healthy glucose levels. It signifies a more severe condition, requiring a diagnosis of either type 1 or type 2 diabetes, and a medical plan moving forward. This will often entail changes to medication and/or diet and consistent tracking of blood sugar.

It's crucial to interpret these readings in the context of your overall health. One elevated reading alone may not always mean you have diabetes, but it's an alert to have follow-up checks done. Consistency is key in all about blood sugar monitoring your fasting blood sugar. A trend of elevated results is a stronger indicator of concern. If you have a family history of diabetes or present risk factors, taking these readings more seriously is crucial.

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Steps to Take If Your Fasting Blood Sugar Is Outside the Normal Range

If your fasting blood sugar reading falls outside the normal range, there are several actions you can take. These depend on your specific readings and underlying conditions:

1. Consult a Healthcare Professional: If you consistently have readings indicating prediabetes or diabetes, the first step is to seek medical advice. They can conduct further testing and determine the best course of action, which might involve medical interventions. They also provide a personalized dietary plan and an exercise routine tailored to your needs.

2. Dietary Changes: A balanced, whole foods-based diet that focuses on complex carbohydrates and reducing your simple carb intake is crucial for managing blood sugar levels. Increasing the intake of fiber rich foods such as fruit and whole grains can help maintain consistent blood glucose. Reduce foods that have a high glycemic load.

   • Example: Replace white bread with whole-grain bread, refined pasta with brown rice, sugary drinks with water or herbal teas. Prioritizing lean protein and healthy fats is also key.

3. Increase Physical Activity: Regular exercise helps improve insulin sensitivity and manage blood sugar levels. Aim for at least 30 minutes of moderate-intensity exercise most days of the week. This may include brisk walking, swimming, or cycling.

   • Example: A 2020 review showed a strong correlation between physical activity and better blood glucose control, noting the improvements in insulin sensitivity and glucose uptake (DOI: 10.1007/s00125-020-05160-7)

4. Weight Management: If you're overweight, losing even a small percentage of your body weight can help lower your blood sugar levels and improve insulin sensitivity. Diet and exercise changes are crucial for weight loss, but support groups or consultations can be beneficial as well.

   • Example: Studies have shown that a loss of 5–10% of body weight can improve insulin sensitivity and blood antihistamine and blood sugar glucose levels. (source: National Institutes of Health)

5. Stress Reduction Techniques: Incorporating practices like yoga, meditation, and deep breathing exercises can help reduce stress hormones, which indirectly helps in stabilizing blood sugar levels.

   • Example: Daily mindfulness meditation practices may assist in lowering cortisol levels and thus lower average blood sugar levels.

6. Regular Monitoring: If you are pre-diabetic or have diabetes, your doctor may recommend regularly monitoring does sugar substitutes raise blood sugar your blood sugar levels at home. This can provide useful data for you and your doctor to adjust your plan of action accordingly, and will help to track what activities and meals affect you the most.

Ultimately, understanding your fasting blood sugar and taking steps to manage it is essential for your long-term health. By integrating this knowledge with healthy lifestyle choices, you can minimize risks and enhance overall well-being.

Get access to my FREE resources 👉 For more info on health-related topics, go here: Take Dr. Berg's Free Keto Mini-Course: or go here: Insulin Resistance: Download Keto Essentials Can just looking at sweets and carbs cause a spike in blood sugar? Or will it trigger an insulin response? That’s exactly what we’re going to cover in this video. The answer is no – not in a fasting state. Looking at sweets and carbs will not cause an insulin spike. The primary triggers of blood sugar are glucose and things that turn into glucose. But, anything you eat has the potential to trigger insulin just for the fact that you ate it. If it’s more carbohydrate, it will trigger your blood sugar more. If it’s less carbohydrate and more fat, it will trigger your blood sugar less. Chronic high insulin can lead to insulin resistance. Other triggers that can cause a blood sugar spike: • Cortisol – Stress • GIP • Protein – especially if it’s low fat Common symptoms of insulin resistance 1. Can’t go long without eating 2. Not satisfied 3. Cravings 4. Need for snacks Talk to a Product Advisor to find the best product for you! Call 1-540-299-1556 with your questions about Dr. Berg's products. Product Advisors are available Monday through Friday 8am-6pm and Saturday 9am-5pm EST. * At this time, we no longer offer Keto Consulting and our Product Advisors will only be advising on which product is best for you and advise on how to take them. Dr. Eric Berg DC Bio: Dr. Berg, age 56, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of the best-selling book The Healthy Keto Plan, and is the Director of Dr. Berg Nutritionals. He no longer practices, but focuses on health education through social media. Follow Me On Social Media: Facebook: Instagram: Anchor: TikTok: DR. BERG'S SHOP: ABOUT DR. BERG: Disclaimer: Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients so he can focus on educating people as a full time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. #keto #ketodiet #weightloss #ketosis