It works better than regular glucometers and is helpful for people with Type 2 diabetes.
The device alerts you when sugar levels go too high or low. It also connects to phone apps, making sugar control easier.
Continuous Glucose Monitors: Things You Need to Know Before Use | Freedom From Diabetes
What is a Continuous Glucose Monitor (CGM)?
Glucose meters help track your blood sugar (BSL) at specific times, but what if you need to monitor it more closely throughout the day and night? That’s where Continuous Glucose Monitors (CGMs) come in. They measure your glucose levels continuously and provide real-time updates—usually every 10 to 15 minutes.
CGMs use a small sensor inserted just beneath the skin—commonly on the abdomen or back of the arm. The sensor records glucose data, which is wirelessly transmitted to a receiver or smartphone app. The process is mostly painless and allows users and doctors to view patterns that may not be visible with occasional testing.
These devices are often prescribed by a doctor and are increasingly used in diabetes management around the world.
How Does a CGM Work?
The sensor checks glucose levels in the fluid between your cells (interstitial fluid) and sends this data to a connected monitor or mobile app.
Earlier CGMs sent results only to the doctor, but newer models let users see their readings in real-time. Alerts can notify you if your blood sugar rises too high or drops too low. The data can also be saved and shared with your healthcare team for deeper analysis.
This helps your doctor:
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Adjust insulin or medication doses
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Decide the right time for medications
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Monitor how well medications are working
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Recommend suitable exercise routines
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Guide you on meal timings and portion sizes
Benefits of a Continuous Glucose Monitor
Traditional glucometers show your blood sugar at a specific moment. In contrast, CGMs track your levels continuously, giving a complete picture of fluctuations across the day and night.
Key benefits include:
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Detecting unnoticed highs and lows
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Catching early morning sugar spikes, also known as the dawn phenomenon
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Helping adjust your diet and activity based on real data
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Monitoring the effectiveness of prescribed medicines
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Supporting caregivers and family members with remote access to your data
This can lead to better long-term control and fewer complications.
Should You Use a CGM?
Not everyone needs a CGM. If your BSLs are stable and your current routine is working well, a basic glucometer may be enough.
However, consider talking to your doctor about a CGM if:
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You experience sudden spikes or drops in blood sugar
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You’ve had episodes of hypoglycemia or hyperglycemia
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You want to understand how lifestyle choices affect your blood sugar in real time
CGMs are especially helpful for children, elderly patients, or those with erratic blood sugar patterns.
Final Thoughts
Continuous Glucose Monitors are a game-changer for diabetes care. They offer more detailed insights, better safety, and greater control over your health. If you're facing challenges with fluctuating blood sugar or want to fine-tune your management plan, a CGM may be worth exploring.
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