New research from the University of Southern Denmark has brought attention to a possible risk linked to a widely used diabetes drug called Ozempic.
The studies suggest that people with type 2 diabetes who use this medication may have a higher chance of developing a rare but serious eye condition that can lead to permanent vision loss.
Ozempic is a medicine that helps control blood sugar levels in people with type 2 diabetes. It has become very popular in recent years because it is effective and also helps with weight loss.
Many patients and doctors see it as an important treatment option. However, like all medicines, it may come with some risks, and researchers are continuing to study its long-term safety.
The concern in these new studies is about a condition called non-arteritic anterior ischemic optic neuropathy, or NAION. This condition happens when the blood supply to the optic nerve is suddenly reduced.
The optic nerve is the part of the eye that sends visual information to the brain. When it is damaged, a person may lose part or all of their vision, and in many cases, the damage cannot be reversed.
NAION is considered rare, but its impact can be very serious. People who develop it may notice sudden vision loss, often in one eye. Because the condition can lead to permanent damage, understanding any possible risk factors is very important.
Earlier research in the United States had already suggested a possible link between Ozempic and NAION. That smaller study found that the risk of developing the condition could be more than twice as high in people using the drug. The new studies from Denmark and Norway provide stronger evidence because they are based on much larger groups of patients.
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 researchers found 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 around 2018, Denmark reported about 60 to 70 cases of NAION each year. In recent years, that number has increased to around 150 cases annually. Many of these cases were seen in people with type 2 diabetes, which raised further concerns.
A second study looked more closely at new users of Ozempic and compared them with people starting other diabetes treatments. This approach helped make the comparison more accurate because the groups were similar. The results again showed that Ozempic users had about double the risk of developing NAION.
Even with these findings, experts stress that the overall risk remains very low. Most people who take Ozempic will not develop this eye condition. This is important because Ozempic provides clear benefits, including better blood sugar control and protection against some complications of diabetes, such as heart and kidney problems.
Doctors say that treatment decisions should always consider both the benefits and the risks. For many patients, Ozempic may still be the best choice.
However, some people may need to think more carefully about their options. For example, patients who already have vision problems or who have had NAION in one eye may want to discuss alternative treatments with their doctor.
It is also important that patients do not stop taking their medication on their own. Suddenly stopping a diabetes drug can lead to serious health problems. Instead, anyone who is worried should talk to their healthcare provider. If a person notices sudden changes in their vision, they should seek medical help as soon as possible.
These studies help doctors better understand how different patients may respond to treatment. In the future, this could lead to more personalized care, where treatments are chosen based on a person’s individual risk factors.
The findings were published in the International Journal of Retina and Vitreous and also shared as a preprint on medRxiv. Researchers hope that this information will guide health authorities and support safer use of diabetes medications.
This research is a reminder that even widely used medicines need to be carefully studied over time. By continuing to collect and analyze data, scientists can help ensure that patients receive treatments that are both effective and as safe as possible.
If you care about eye health, please read studies about how vitamin B may help fight vision loss, and MIND diet may reduce risk of vision loss disease.
For more information about eye disease, please see recent studies about how to protect your eyes from glaucoma, and results showing this eye surgery may reduce dementia risk.
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