A widely used diabetes drug is now under close attention after new research suggests it may increase the risk of a rare but serious eye condition that can lead to permanent vision loss.
Scientists from the University of Southern Denmark have carried out two large studies looking at the safety of Ozempic, a medication commonly used to treat type 2 diabetes.
The drug has become very popular in recent years because it helps control blood sugar and can also support weight loss. However, the new findings suggest that it may have an unexpected side effect related to eye health.
The concern is about a condition called non-arteritic anterior ischemic optic neuropathy, or NAION. This condition happens when blood flow to the optic nerve is suddenly reduced. The optic nerve is an important part of the eye that sends visual information to the brain. When it is damaged, it can cause sudden vision loss, which may be permanent.
NAION is considered rare, but it can have serious consequences. People who develop it may lose vision in one eye, and in some cases, the other eye can also be affected later. Because of this, even a small increase in risk is taken seriously by doctors and researchers.
The issue was first raised by a smaller study in the United States, which suggested that Ozempic might more than double the risk of developing NAION. The new studies from Denmark provide stronger evidence because they include a much larger number of patients and use national health data.
In one of the studies, researchers examined medical records from more than 424,000 people with type 2 diabetes. Among them, over 106,000 were using Ozempic. The results showed that people taking Ozempic were about twice as likely to develop NAION compared to those using other diabetes medications.
The researchers also noticed a change over time. Before Ozempic became widely used in Denmark around 2018, there were about 60 to 70 cases of NAION each year. In recent years, that number has increased to around 150 cases per year. Most of these cases were seen in people with type 2 diabetes.
A second study looked more closely at new users of Ozempic and compared them with patients starting other diabetes treatments in Denmark and Norway. This approach allowed the researchers to compare similar groups of people. The findings were consistent, again showing that Ozempic users had about double the risk of developing NAION.
Even though these results may sound worrying, it is important to understand that the overall risk remains low. NAION is still a rare condition, and most people who take Ozempic will never experience this problem. For many patients, the benefits of controlling blood sugar and reducing the risk of other complications are very important.
Experts say that treatment decisions should always consider both risks and benefits. Managing type 2 diabetes is essential because uncontrolled blood sugar can lead to serious problems such as heart disease, kidney damage, and nerve damage.
Doctors also point out that there are other medications available that may offer similar benefits. These alternatives can help control blood sugar and protect the heart and kidneys. For patients who already have eye problems or are at higher risk of vision loss, these options may be worth discussing with a healthcare provider.
Patients who are currently taking Ozempic should not stop using it on their own. Stopping treatment suddenly can lead to poor blood sugar control and other health risks. Instead, anyone who has concerns should speak with their doctor. It is especially important to seek medical advice if there are sudden changes in vision, such as blurred sight or dark areas in the visual field.
The findings from these studies have been shared with health authorities, and they may help guide future decisions about the safe use of Ozempic. Researchers hope that this information will support more personalized treatment plans, where doctors can choose the best medication for each patient based on their individual risks.
The studies were published in the International Journal of Retina and Vitreous and also shared as a preprint on medRxiv. While more research is needed, these results highlight the importance of monitoring side effects and continuing to study widely used medicines.
Overall, the message is not to avoid treatment, but to stay informed. All medicines have both benefits and risks. By understanding these risks and working closely with healthcare providers, patients can make the best choices for their health.
If you care about diabetes, please read studies that flaxseed oil is more beneficial than fish oil to people with diabetes, and green tea could help reduce death risk in diabetes.
For more information about nutrition, please see recent studies that blueberries strongly benefit people with metabolic syndrome, and results showing vitamin D could improve blood pressure in people with diabetes.
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