English researchers are turning to the technology behind Covid-19 vaccines to develop the first damage-reversing heart attack cure. Originally using virus vectors, King's College London researchers delivered RNA to damaged pig hearts, sparking the growth of new cardiac muscle cells after a heart attack. Now, inspired by the Pfizer and Moderna vaccines, they are turning to lipid nanoparticles used in Covid-19 vaccines to deliver their treatment to the heart safely and effectively. Of the estimated 17.9 million people who died from cardiovascular disease in 2019, 85% ultimately died from heart attacks and strokes.

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