"Study Shows Small Increase in Heart and Brain Conditions Linked to COVID-19 Vaccine"

A new study suggests possible links between COVID-19 vaccines and rare neurological, blood, and heart-related conditions, including myocarditis and Guillain-Barré syndrome, but researchers emphasize that the association does not prove causation and that adverse effects were rare among the more than 99 million people studied. The study comes amid ongoing debate over the risks and benefits of the vaccine, with COVID-19 itself also known to cause side effects affecting the heart, and partisan disagreements over vaccine mandates and public health measures.