
A profound medical study led by Imperial College London and the MRC Laboratory of Medical Sciences has uncovered the physical mechanism showing exactly how chronic stress causes lasting, invisible cardiovascular harm. By tracking health datasets from nearly 480,000 UK Biobank participants, researchers successfully mapped elevated levels of an inflammatory blood marker called GlycA. The data reveals that prolonged psychological strain directly triggers silent structural changes in human anatomy, leading to thickened heart walls and severely impaired ventricular filling capacities.