Medical experts in Europe and the United States have revised the classification of heart attacks to address disparities in diagnosis and treatment between men and women. The updated guidelines, issued by the European Society of Cardiology and the American Heart Association, eliminate previous distinctions that categorized heart attacks more common in women as less severe than those typically affecting men.

Until now, heart attacks were divided into two types: Type 1, which primarily involved blood clots obstructing coronary arteries and was most common in men, and Type 2, linked to artery spasms or tears and more prevalent among women. This classification often resulted in women receiving less aggressive treatment, as their heart attacks were perceived as less critical.

Professor Bryan Williams, associated with the British Heart Foundation, described the change as a "radical shift" in the approach to diagnosing and managing heart attacks. He noted that for decades, women have frequently been underdiagnosed and undertreated for certain forms of heart attack, particularly those unrelated to blood clots. The revised classification designates all heart attacks, regardless of underlying cause, as Type 1, underscoring their equal severity and the need for appropriate clinical attention.

Heart attacks generally occur when blood flow to the heart muscle is blocked. While most cases result from clots, other causes—such as artery tears or spasms—are increasingly recognized, especially in women. Factors like pregnancy and hormonal changes may trigger these non-clot-related events, which were historically underestimated in clinical settings.

The new guidelines aim to improve awareness and prompt diagnosis of these forms of heart attack, potentially reducing mortality and improving outcomes for women. Healthcare providers are encouraged to apply a uniform diagnostic framework and treatment protocols to all patients presenting with heart attack symptoms, regardless of sex or the specific mechanism involved.