For non-diabetics, CGMs can be interesting and sometimes useful because they show how food, sleep, exercise, and stress affect glucose in real time. That makes them a feedback tool, not a diagnosis.
The biggest value is pattern recognition: which meals spike you, whether your sleep is messing with your readings, and how different breakfasts compare. The biggest risk is overreacting to normal bumps and turning the device into a panic machine.
A CGM makes sense if the user wants data and can treat it like one input among many. It is less useful if they will obsess over every fluctuation and change their whole diet based on a single noisy trace.
A reliable continuous glucose monitor is a small investment that makes this easier: continuous glucose monitor.
Sources
This is general information, not professional medical advice. For decisions about your situation, talk to a qualified professional.
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