A continuous glucose monitor is a small device worn on the back of the arm that tracks your body’s glucose levels in real-time. But are CGMs only beneficial for people with diabetes? Is a CGM different from a glucometer? And is a CGM the best option for you and your current health needs?
There are many reasons that a CGM can be beneficial, but if you’ve never used one, you may have questions about exactly how it works and if it’s right for you.
To answer these questions and more, we sat down with Kara Collier, our co-founder and VP of Health here at NutriSense, to take a closer look at how CGMs work and what you need to know about these devices before using one.
A: This is a common misconception—CGMs are not painful to apply. Once you’ve put it on, you’ll hardly notice it’s there. You may feel a slight prick when inserting the sensor, but it will sit on the back of your arm unnoticed after that.
A: A CGM measures your glucose levels and provides real-time data that you can view and analyze to look for trends and identify problems and patterns. You can use all of this to make more informed decisions about your health.
These devices have numerous benefits for people with diabetes as we know, but this kind of technology can also help people who might not be aware of their high blood sugar levels start changing their behavior and reverse conditions such as prediabetes.
Additionally, even if your glucose levels are not abnormally high, your responses will be as unique as you are. How one person responds to the same food will be different from another person, so to truly personalize your approach to nutrition and health, you must gather the data.
A: A CGM is a small device that is applied to the back of the arm and provides real-time glucose readings for people who want to monitor their blood sugar levels. It uses a tiny microfilament, which is inserted into the interstitial fluid, and this is what measures glucose 24/7.
A: There are a few different manufacturers of CGMs in the U.S. which are Dexcom, Abbott, Medtronic, and Senseonics Eversense.
NutriSense’s CGM sensor is the FreeStyle Libre device from Abbott. It’s comfortable, lasts 14 days, and can be worn while exercising and doing your regular activities. It’s also the most cost effective option without insurance.
A: Each CGM provider may have different ranges for how long you can wear the device.
You can wear the FreeStyle Libre CGM used by NutriSense for up to 14 days. Other options like Dexcom’s G6 sensor last for 10 days.
A: Some CGMs are covered by Medicare and private insurance. While NutriSense is not currently able to accept insurance, HSA and FSA payments are both permitted.
NutriSense’s CGM program also offers a range of plans that vary in price and benefits and are relatively cost-effective compared to other options out there.
A: Yes—almost anyone can use a CGM; it’s not only for people with diabetes. To be more specific, though, there are different FDA regulations depending on the supplier of your device, but most CGMs are approved for use by anyone 18 years and older.
A few exceptions to this are important to note—anyone who is currently pregnant or trying to become pregnant or undergoing cancer treatment, or insulin therapy should not use a CGM through NutriSense until advised otherwise by their doctor.
A: Once you have your CGM on, you’ll be able to track your progress and collect your data inside the app used by your provider. You can monitor your postprandial responses, see what your baseline glucose values are by looking at time-in-range, fasting levels, and average glucose levels), and track your glycemic variability.
Hemoglobin (A1C) is what we think of as the gold standard for monitoring glycemic control and looking out for any other health condition risks. But this is only a one-time lab value that gives you an estimate of your average glucose levels.
Unfortunately, an average does not tell you anything about how high or low your glucose might be going. A CGM is the only tool that can provide a movie view of your glucose rather than a snapshot, which allows you to see the fluctuations in your values and pinpoint what's working and what's not.
A: Every type of glucose measurement will have a margin of error, but CGMs are regarded as an accurate method of tracking glucose levels.
These devices are measured using the MARD score, or mean absolute relative difference, to determine their exact margin of error.
A: To get the most value out of your CGM and to be able to track your progress and levels in real-time, most CGMs will require the wearer to have a smartphone to be able to access their data.
Apps like NutriSense allow users to track their glucose levels and analyze which foods or habits cause spikes over time and in real-time. Anytime you are curious about your glucose values, you simply scan your CGM with the app and get updated glucose values in real-time.
A: No, you will not need to use more than one app to connect the sensor. Your CGM sensor will only be connected to your provider’s app to view your glucose data. The NutriSense app allows you to track your exercise and sleep habits in addition to your diet to provide a complete picture about your health and glucose levels.
However, if you’re looking to get the most benefit from your glucose data, many other health-focused apps can be paired with and support you in tracking your nutrition, macros, exercise, and weight loss goals.
A: Yes. For example, the NutriSense program pairs users with their own personalized dietitian who will walk you through your data and advise dietary and lifestyle changes you can implement to help you regulate your glucose levels.
In our program, you can send a message to your personal dietitian or nutritionist at any time, and they’ll reach out proactively to offer insights and help you interpret your data as well.
A: There are many valuable insights you can take away from your body’s glucose data. I’ll go through five different things you and your dietitian or doctor can use this information for:
Take a look at the images below for a few visual examples of how your dietitian can help you understand the data from your CGM in the NutriSense app.
A: One of the biggest advantages of the CGM is that it’s extremely durable and can be worn at the gym, in the shower, on a plane, and in the swimming pool. Most CGMs also come with a bandage you can stick over it to make sure it’s securely fastened.
A: No! Meters are not required if you’re using a CGM to measure your glucose levels. However, it can be helpful to have a fasting glucose from the last six months to have a baseline to compare with.
A: Everyone should be able to take control of their health. Even in healthy people, elevated blood glucose levels can impact physiological pathways related to aging, cardiovascular health, kidney function, and the risk of developing a metabolic disorder like diabetes.
With all the actionable insights that a CGM can provide, individuals without diabetes can reduce their likelihood of developing diabetes and other diseases. They can also discover how their body reacts to their diet and habits and use that information to create a personalized plan for their individual needs.
Even athletes can benefit from access to this data to learn more about how their bodies respond to high carbohydrate intake and high-intensity exercise. These insights, paired with guidance from NutriSense, allows anyone to take steps related to exercise and nutrition to manage their health.
A: That’s a great question. Many people don’t realize that high glucose levels and obesity are often correlated.
The CGM can be a great way to hold yourself accountable, recognize habits that might be hindering your weight loss, and learn how to prevent our insulin levels from rising so that we can effectively burn fat.
A: There are several CGM providers currently on the market, and each one has its own cost and solutions. NutriSense’s CGM program is one of the most inclusive and cost-effective options compared to some other alternatives.
A: Speaking with your primary care physician to discuss your individual needs is an excellent first step for most people. Whether you’re at risk for diabetes, currently have it, or simply wish to learn more about your body’s response to certain things, a CGM can help almost everyone understand their body better.
One of the benefits of CGM providers like NutriSense is that anyone can sign up for a no-commitment plan to try out a CGM and see if the program provides the insights and support you need to optimize your health.
A: Thank you! I hope this has been helpful in understanding CGMs. One takeaway that I’d like to emphasize again to everyone reading is that CGMs aren’t just for people with diabetes.
Studies have shown that only twelve percent of Americans are considered metabolically healthy, and glucose levels can play a massive part. You might be surprised what you learn about your healthy habits while using a CGM.
The landscape of glucose monitoring technology is expanding and opening up new possibilities for optimizing our health. Having access to this sort of data can help us create healthier habits by recognizing what we’ve been doing that may not be optimal.
With the NutriSense CGM program, you’ll also be able to analyze your data with a dietitian who can help you take a closer look at your nutrition and guide you towards healthier eating. Get started with NutriSense and see what other insights you can uncover with your CGM.
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