From Step Counters to Blood Sugar Clues
Smartwatch glucose monitoring is shifting from science fiction to practical support, but today’s features are more modest than many headlines suggest. Instead of replacing medical devices, leading brands are building tools that sit on top of existing glucose monitors or tap everyday health data to flag potential concerns. Garmin has focused on making continuous glucose monitor information easier to see during real life, especially workouts. Huawei, by contrast, is using heart rate, sleep, and activity patterns to estimate diabetes risk over several days. In both cases, the watch is not directly measuring blood sugar through a magic sensor in the band. Rather, it is becoming a more useful blood sugar tracking watch by turning scattered signals into timely, glanceable insights. The result is a new layer of wearable health monitoring that supports, rather than substitutes for, proper testing and clinical care.
How Garmin Uses Dexcom Data for Real-Time Glucose Views
Garmin’s approach to smartwatch glucose monitoring centers on making Dexcom continuous glucose monitor readings easier to access when you are active. Select Garmin models can show live glucose values, trend arrows, and recent history via Dexcom’s apps in the Connect IQ Store. That information can appear as a dedicated Dexcom watch app, an activity data field beside heart rate and pace, or even as part of a custom watch face. During a run, hike, or gym session, this Garmin Dexcom integration means you can check glucose without digging for your phone, seeing how blood sugar trends alongside effort and stress. Importantly, Garmin is only a companion display: the data still comes from a Dexcom G6 or G7 sensor, and the watch is not approved for making treatment decisions. It adds context and convenience, not a standalone medical reading.
Garmin’s Longer-Range Vision: Patents for HbA1c Estimation
Beyond today’s Dexcom display features, Garmin is exploring longer-term metabolic insights. A recent patent describes estimating glycated hemoglobin, or HbA1c, using optical sensors in a wearable device. Rather than second-by-second glucose tracking, this concept focuses on the bigger picture: how much glucose tends to be attached to hemoglobin over time. In practice, that could translate into weekly or monthly updates that highlight how daily routines align with longer-range blood sugar patterns. While still a research-stage idea and not a consumer feature, this direction suggests a different kind of smartwatch glucose monitoring, one that complements continuous monitors instead of duplicating them. If it reaches products, users could see how shifts in sleep, stress, training, and diet influence their metabolic health over weeks, not just during a single workout, strengthening wearable health monitoring as a tool for long-term habit change.
Huawei’s Diabetes Risk Alerts Turn Daily Data into Warnings
Huawei’s Watch GT 6 Pro takes a prevention-first path by offering diabetes risk alerts through its Diabetes Risk Study feature. Rather than reading blood sugar directly, the watch runs a background assessment using three to fourteen days of wrist-based data. It tracks inputs such as heart rate, heart rate variability, sleep patterns, and daily movement via optical PPG sensors, then classifies risk as Low, Medium, or High once enough information has been collected. This helps people see potential longer-term issues without interpreting multiple charts or metrics. The feature is positioned as an awareness tool, especially for adults worried about Type 2 diabetes or with a family history. It is not intended for Type 1 or gestational diabetes and does not diagnose any condition. Instead, recurring Medium or High results serve as prompts to seek medical follow-up and consider lifestyle adjustments around sleep, stress, diet, and activity.
What Smartwatches Can—and Cannot—Do for Blood Sugar Today
Across brands, current smartwatch glucose features focus on smarter display and risk prediction rather than direct blood sugar measurement. Garmin’s integration turns a compatible watch into a convenient window on Dexcom data, bringing trend arrows and history into workouts and daily life. Huawei’s Diabetes Risk Study uses everyday metrics to raise early awareness of possible Type 2 diabetes risk before symptoms are obvious. Neither approach eliminates the need for blood tests, approved glucose monitors, or professional advice. Patents and research hint at future capabilities like non-invasive HbA1c estimation, but these ideas are not yet ready for consumers. For now, the real value lies in proactive health management: people with diabetes can more easily keep an eye on glucose during activity, while those at risk gain clearer cues to talk with a doctor. Smartwatches are becoming health companions, not replacements for medical care.