Recent findings indicate that widely used weight-loss medications might lead to muscle loss, including vital heart muscle, potentially leading to serious health complications over time. Experts call for more research and a cautious approach to using these drugs,

Some outcomes, like reduced risk of cardiovascular disease and increased chance of nausea, were expected. But others took researchers by surprise.

The new treatment targets gut hormone GLP-1 but also mimics amylin, a hormone released by the pancreas that suppresses hunger.