New research has confirmed Ozempic reduces the risk of strokes and heart attacks by 20 percent - even in patients who weren't severely overweight to start with. 

The study, which was led by University College London and published in The Lancet, found that weight loss accounted for only one third of this reduction.

Auckland University molecular medicine professor Peter Shepherd says this is proof other factors are behind the slowdown of heart disease.

"We know a few of them, we know a bit about how it effects heart tissue growth, we know a bit about the positive effects it has on the deposition of the lipids, but there's still a long way to go to fully understand its effects." 

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