Popular GLP-1 weight-loss medications have helped millions of people shed pounds, but new research from Australia suggests doctors and patients may need to pay closer attention to what users are actually eating while taking them. A systematic review from the Hunter Medical Research Institute (HMRI) found that while the medications are effective for weight loss, many clinical trials fail to track changes in diet or whether patients are still getting enough essential nutrients. According to researchers, that gap could increase the risk of malnutrition over time.