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What are ‘normal’ glucose ranges?

What are ‘normal’ glucose ranges?

Glucose, commonly known as blood sugar, plays a crucial role in maintaining our body's energy levels. It serves as the primary source of fuel for our cells. Monitoring glucose levels is essential, especially for individuals with diabetes or those concerned about their overall health. But what exactly are 'normal' glucose ranges, and should they be the same as optimal ranges?
(Keep in mind that before making any changes to your glucose management, it is always best to consult with your healthcare provider.)

Types of Glucose (Blood Sugar) Tests

Before we discuss the differences between normal and optimal glucose levels, it's essential to understand the various types of glucose tests. These tests are essential for assessing different aspects of your glucose metabolism. Here are some common types:

Fasting Glucose: This test measures your blood sugar levels after an overnight fast of about 8 hours. It gives you a baseline reading of your glucose levels in the absence of recent food intake.

Post-Meal Glucose: Also known as postprandial glucose, this test measures your blood sugar about one hour after eating. It helps to assess how your body responds to the food you've consumed.

Mean 24-Hour Glucose: This test provides an average glucose level over a full day. It is typically measured with a continuous glucose monitor (CGM), which continuously tracks your glucose levels throughout the day.


Standard Ranges for 'Normal' Glucose

The standard ranges for 'normal' glucose levels are often provided by healthcare organizations such as the American Diabetes Association (ADA) and the International Diabetes Federation. These ranges act as general guidelines for assessing glucose health. Here are the standard 'normal' ranges:

Fasting Glucose: Less than 100 mg/dL

Pre-Meal Glucose: 72-90 mg/dL

Post-Meal Glucose: 89-104 mg/dL

Mean 24-Hour Glucose: Around 140 mg/dL

These standard ranges are widely accepted, but they might not be the most suitable for everyone's health.


Normal vs. Optimal Glucose Levels

The concept of 'normal' glucose levels can sometimes be overly broad and may not cater to individual health needs. Optimal levels are more tailored to your specific health and well-being. Let's explore the proposed 'optimal' glucose ranges:

Fasting Glucose: 72-85 mg/dL

Pre-Meal Glucose: 72-90 mg/dL

Post-Meal Glucose Peak: Less than 110 mg/dL, with an increase of less than 30 mg/dL from pre-meal levels

Mean 24-Hour Glucose: 79-100 mg/dL

These optimal ranges are suggested by experts in the field and are designed to promote better health and well-being. However, it's crucial to emphasize that individual variations exist. What's optimal for one person may not be the same for another. Therefore, it's always recommended to consult with your healthcare provider before making changes to your glucose management.



In the world of health and wellness, understanding and managing your glucose levels have never been more accessible and insightful. Continuous Glucose Monitoring (CGM) has opened new avenues for tracking glucose levels around the clock, providing valuable insights into the intricacies of our bodies.

As we've explored the distinctions between 'normal' and 'optimal' glucose ranges, it's become evident that there's no universal standard that applies to everyone throughout the day. The human body is a complex and dynamic system, and glucose management is no exception. With CGM, we're not only demystifying the science behind glucose regulation in individuals without diabetes, but we're also paving the way for a new era of personalized health. At Actofit, we've taken on a remarkable mission to delve deeper into how our bodies manage energy and how CGMs can contribute to improved well-being. This journey is nothing short of groundbreaking, and it's unlike anything that's been attempted before.

The concept of a 'normal' glucose range, while providing a useful reference, is not without its limitations. Sometimes, a fasting glucose level within the 'normal' range may be a subtle indicator of potential health issues. This is why it's imperative to determine what's just right for you, and that's where the 'optimal' glucose ranges come into play. While we've proposed optimal ranges based on extensive research and expert guidance, it's essential to understand that what's optimal can be highly individual. Your unique body and health profile may necessitate adjustments to these suggested ranges.

Therefore, we cannot emphasize enough the importance of consulting with your healthcare provider before setting specific glucose targets or making significant changes to your diet and lifestyle. In the pursuit of better health and well-being, the partnership between technology, research, and individualized care is a powerful one. As we continue to unravel the intricacies of glucose management, remember that your health is a personal journey, and the path to optimal glucose levels is a dynamic one, guided by both science and your unique needs.

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