Managing type 2 diabetes is something millions of people deal with every day. It requires constant attention, careful eating, and regular monitoring of blood sugar levels.
For many years, the most common way to check blood sugar has been through finger-prick tests.
These tests can be uncomfortable and only provide a snapshot of glucose levels at a single moment. Because of this, many people find it difficult to fully understand how their blood sugar changes throughout the day.
A major clinical trial has now provided strong evidence that a newer method, called continuous glucose monitoring, or CGM, can make a big difference.
The findings come from the FreeDM2 trial and were published in The Lancet Diabetes & Endocrinology. The study was led by researchers including Dr. Emma Wilmot and Dr. Lala Leelarathna. fileciteturn0file0
Type 2 diabetes is a long-term condition where the body cannot properly control blood sugar levels. Over time, high blood sugar can damage many parts of the body. It increases the risk of serious complications such as heart disease, blindness, amputations, and even early death. Because of this, keeping blood sugar within a healthy range is very important.
In the past, finger-prick tests have been the standard method. However, these tests only show glucose levels at specific times. They do not show how levels change between tests, which means important patterns can be missed.
Continuous glucose monitoring works differently. A small sensor is placed on the body, often on the back of the arm. It measures glucose levels all day and night and sends the data to a phone or reader. This allows people to see trends and respond quickly when levels go too high or too low.
The FreeDM2 trial included 303 adults with type 2 diabetes who were using basal insulin. The participants were divided into two groups. One group used CGM, while the other continued using finger-prick testing. The study lasted for several months and included both a self-management phase and a phase where clinicians provided additional support.
The results were clear. People using CGM had much better control of their blood sugar levels. Their HbA1c levels, which reflect average blood sugar over time, dropped more than those using traditional methods. This improvement continued throughout the study, showing that the benefits were not short-term.
Participants also reported that CGM helped them understand their condition better. By seeing real-time changes, they could adjust their eating, exercise, and medication more effectively. Some described the experience as life-changing.
When analysing these findings, the study is strong because it used a controlled trial design and followed participants over time. It shows that better information can lead to better decisions and improved health outcomes.
However, there are still questions about cost and access. CGM devices may not be available to everyone, and further research is needed to understand how widely they can be used.
Overall, the study suggests that CGM could play a much bigger role in managing type 2 diabetes in the future. It highlights how technology can make self-care easier and more effective.
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Source: University of Nottingham.
