Is Cocoa the Secret to Long-Term Heart Health?
Could something as enjoyable as cocoa support healthier aging? A major clinical study led by researchers at Mass General Brigham has found promising evidence. The trial suggests that cocoa extract may slow inflammation and aging by reducing certain biological markers linked to chronic disease and age-related decline.
Understanding “Inflammaging”
As we grow older, many people develop a hidden, low-grade form of chronic inflammation. Scientists call this process inflammaging. Over time, it can stiffen blood vessels, weaken the immune system, and increase the risk of heart disease, diabetes, and other chronic conditions.
Because of this, researchers are increasingly interested in safe, food-based strategies to keep inflammation under control. Cocoa beans, which are naturally rich in compounds known as flavanols, have long been studied for their benefits on heart health. These same compounds are also found in tea, berries, and grapes.
Inside the COSMOS Trial
The COSMOS study (COcoa Supplement and Multivitamin Outcomes Study) set out to test whether cocoa extract could play a role in fighting inflammaging. Between 2014 and 2020, more than 21,000 adults aged 60 and older participated.
For this specific analysis, scientists examined blood samples from nearly 600 participants. They measured five key inflammation markers, including one called hsCRP (high-sensitivity C-reactive protein), which is strongly linked to heart disease risk.
What the Results Showed
Participants who took daily cocoa extract supplements experienced about an 8% yearly reduction in hsCRP levels compared with those who received a placebo. This steady decline suggests that cocoa flavanols may ease harmful inflammation in the body.
Interestingly, another immune protein called interferon-γ increased in the cocoa group, raising new questions about how cocoa might affect immune function. Other inflammation markers, such as IL-6 and TNF-α, showed little to modest changes, with some differences noted between men and women.
Why the Findings Matter
These results build on earlier evidence from COSMOS, which found that cocoa extract reduced deaths from cardiovascular disease by 27%. Together, the findings suggest that cocoa flavanols may support both heart health and healthy aging by reducing inflammation.
“This study highlights how cardiovascular health and the aging process are closely linked,” explained Dr. Howard Sesso, senior author and associate director of preventive medicine at Brigham and Women’s Hospital. “Our data suggest cocoa extract may help counter inflammaging.”
Conclusion
Experts caution that cocoa supplements should not be seen as a substitute for healthy habits. A balanced diet, regular physical activity, and good sleep remain essential pillars of aging well.
However, the new research encourages greater attention on the role of plant-based foods, including cocoa, in lowering age-related risks. The study, supported by the National Institutes of Health, was published in Age and Ageing. Researchers will continue tracking whether cocoa and multivitamin supplements can protect against other health challenges linked to aging.
While it’s not a magic bullet, growing evidence shows that cocoa extract may slow inflammation and aging, offering another potential tool for supporting long-term heart and immune health.
Source: Inputs from various media Sources
I’m a pharmacist with a strong background in health sciences. I hold a BSc from Delhi University and a pharmacy degree from PDM University. I write articles and daily health news while interviewing doctors to bring you the latest insights. In my free time, you’ll find me at the gym or lost in a sci-fi novel.
- Health News and Updates,People Forum
- 29 September 2025
- 13:00
