A growing number of people without diabetes are strapping on continuous glucose monitors, devices originally designed for diabetic patients, as they seek to optimize their health through real-time blood sugar tracking. The trend has accelerated following the Food and Drug Administration’s approval of the first over-the-counter glucose monitor in August, but medical experts question whether the benefits justify the investment for healthy individuals.
The Dexcom Stelo Glucose Biosensor System represents a watershed moment for glucose monitoring technology, making these devices accessible to anyone 18 and older without a prescription. Previously available only to diabetes patients, these wearable sensors track glucose levels continuously and send data to smartphones, promising insights into how diet and exercise affect blood sugar.
The appeal is understandable. Unlike traditional finger-prick tests that offer snapshots at specific moments, continuous glucose monitors reveal patterns throughout the day, showing how different foods, stress levels, and activities influence blood sugar. Proponents argue this data empowers better dietary choices and can help identify prediabetes before it progresses.
Yet research supporting glucose monitoring in healthy populations remains sparse. Harvard Health analysis found that among 153 people without diabetes, blood sugar levels remained normal or nearly normal 96 percent of the time, with many abnormal readings deemed implausible or measurement errors. The review concluded there was no published evidence suggesting monitoring translates into improved health for people without diabetes or blood sugar problems.
Medical professionals express particular concern about the psychological impact of constant glucose data. “A lot of people without any kind of diabetes may have what we call a postprandial—or normal after-meal—blood sugar spike,” explained one expert to NYU Langone News. The worry is that users might unnecessarily restrict healthy foods that cause normal glucose fluctuations, potentially leading to disordered eating patterns.
UCLA Health researchers noted that while glucose monitors might help non-diabetic individuals make informed nutritional choices, they also risk overwhelming users with information. The constant stream of data can create anxiety about normal biological processes, turning routine meals into sources of stress rather than nourishment.A comprehensive review published in June by researchers at University College London and Birmingham Children’s Hospital found insufficient evidence to demonstrate effective use of continuous glucose monitors in people not living with diabetes. The analysis highlighted gaps in research specifically examining outcomes for healthy populations using these devices.
Cost presents another barrier. Continuous glucose monitors typically require monthly sensor replacements, with expenses ranging from $70 to $200 monthly depending on the system and insurance coverage. For the over-the-counter Stelo system, users can expect to pay around $89 for a two-week supply of sensors.
Despite limited evidence, the wellness industry has embraced glucose monitoring with enthusiasm. Companies like Nutrisense offer subscription services that pair continuous glucose monitors with nutritionist consultations, marketing the technology as a pathway to metabolic optimization. These programs appeal to health-conscious consumers seeking data-driven approaches to wellness, even without clear medical necessity.
The phenomenon reflects broader trends in health tracking, where consumers increasingly seek quantified insights into bodily functions. Fitness trackers measuring heart rate, sleep patterns, and step counts have normalized continuous health monitoring, making glucose tracking feel like a natural progression.
For individuals with prediabetes or those at high risk for type 2 diabetes, continuous glucose monitoring may offer legitimate benefits by revealing glucose patterns that standard tests might miss. The technology could potentially facilitate earlier intervention and lifestyle modifications in these populations.
However, for the majority of healthy adults, the current evidence suggests that continuous glucose monitoring represents more aspiration than optimization. While the technology is generally safe, the lack of proven benefits combined with potential for inducing food anxiety raises questions about its value for routine wellness tracking.
As the market for consumer health technology continues expanding, the glucose monitoring trend highlights the tension between available technology and established medical need. Until research demonstrates clear benefits for healthy populations, these devices may serve more as expensive peace of mind than genuine health tools.
