British study links daily stress to silent, lasting heart damage

A new British scientific study has revealed that chronic stress from daily life causes permanent structural changes in the heart, increases the risk of heart attacks and strokes, and becomes a silent physical threat.

According to experiments conducted by scientists from the MRC Laboratory of Medical Sciences and Imperial College London on nearly 480,000 adults in the United Kingdom, the study used a blood marker known as glycoprotein acetyls (GlycA), along with heart imaging and genetic data. They found that chronic inflammation—linked to socioeconomic status and lifestyle—is the main driver of these changes.

The results showed that people with the highest levels of inflammation (top 20%) were 43% more likely to suffer a heart attack or stroke compared to those with the lowest levels (bottom 20%). Their hearts also showed clear structural changes, which may develop silently for years before leading to heart failure.

Professor Declan O'Regan from Imperial College London explained that millions of people live with hidden inflammation that slowly alters their hearts and causes long-term damage. He noted that chronic inflammation is complex but is linked to economic status, family health, and lifestyle. There are ways to reduce inflammation, such as lowering smoking rates and obesity.

The study identified key inflammatory proteins from the interleukin-1 and tumor necrosis factor families as possible contributors to this damage, many of which are already targeted by drugs in clinical trials. This raises hopes that anti-inflammatory treatments could help prevent heart disease before symptoms appear.

The study's scientific findings concluded that combining blood tests for inflammation with genetic risk scores could help identify those who would benefit most from early intervention. While inflammation is part of the body's healing process, it also has several dark sides. The study underscores the importance of addressing the causes of inflammation and poor heart health, while supporting people to make lifestyle changes that protect their hearts in the future.