GLP-1 drug users twice as likely to suffer from vision loss, study says Obesity medicine physician Dr. Alexandra Sowa reacts to a study indicating GLP-1 weight loss medications potentially increase the risk of macular degeneration in some users. NEW You can now listen to Fox News articles! A common medication for diabetes may slow down age-related vision loss , according to new research. People with diabetes who were over the age of 55 and taking metformin — a prescription drug most commonly