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Researchers unravel why mRNA-based vaccines for COVID-19 can cause heart damage

Stanford Medicine investigators have unearthed the biological process by which mRNA-based vaccines for COVID-19 can cause heart damage in some young men and adolescents - and they've shown a possible route to reducing its likelihood.

10 Dec 2025

A North Carolina hospital was slated to open in 2025. Mired in bureaucracy, it’s still a dirt field.

Madison County, tucked in the mountains of western North Carolina, has no hospital and just three ambulances serving its roughly 22,000 people.

8 Dec 2025

Study highlights limitations of current cardiac screening tools

Current cardiac screening tools used to prevent heart attacks fail to identify nearly half of the people who are actually at risk of having one, according to a new study led by Mount Sinai researchers.

22 Nov 2025

Plant-based diet prevents and reverses heart microvascular dysfunction in hypertensive rats

Eating a plant-based diet consisting of fruits, vegetables, nuts and legumes can help prevent and reverse heart disease in rats that have high blood pressure, according to a study published by researchers in the Institute for Biomedical Sciences at Georgia State University.

12 Nov 2025

MRI-based blood flow testing offers better answers for unexplained chest pain

Chest pain may still be angina even when coronary angiogram testing shows the main heart arteries look clear. Using stress cardiac stress MRI testing to measure blood flow around the heart appears to improve diagnosis and patient quality of life.

10 Nov 2025

Study links dysautonomia to breathing problems in chronic fatigue patients

Chronic fatigue syndrome leaves patients exhausted and struggling with brain fog - and it typically gets worse after mental or physical exercise, a phenomenon called post-exertional malaise.

10 Nov 2025

Brainstem damage found to be behind long-lasting effects of severe Covid-19

Damage to the brainstem - the brain's 'control center' - is behind long-lasting physical and psychiatric effects of severe Covid-19 infection, a study suggests.

8 Oct 2025

Tramadol found to offer limited relief for chronic pain while raising risk of serious side effects

The strong opioid painkiller, tramadol, is not that effective at easing chronic pain for which it's widely prescribed, finds a pooled data analysis of the available research, published online in BMJ Evidence Based Medicine.

7 Oct 2025

Anxiety treatment improves outcomes for low-risk chest pain patients

Chest pain ranks as the second most common reason for emergency department (ED) visits, making it a key concern for patients and doctors.

25 Sep 2025

Frequent exercise reshapes nerves that control the heart, research shows

Frequent exercise doesn't just strengthen the heart – it also changes the nerves that control it, according to new research which could guide more targeted and effective care for common heart problems.

23 Sep 2025

Psychological distress after a heart attack emerges as a critical risk factor for heart health

Many people experience one or more types of psychological distress, including depression, anxiety, psychosocial stress or post-traumatic stress disorder (PTSD), after a heart attack, which can affect their physical recovery and long-term heart health, according to a new American Heart Association scientific statement, published today in the American Heart Association's flagship, peer-reviewed journal Circulation.

22 Sep 2025

Research reveals widespread cardiac harm from COVID, offers solutions

Millions of people around the world are suffering with the serious cardiovascular effects of Covid infection and long Covid. A lack of clear guidance on how to reduce this suffering and prevent further harm means that patients are not receiving the care they need, and some are turning to unproven or unsafe treatments.

18 Sep 2025

Covid vaccinations remain vital to protect global heart health

Regular Covid vaccinations should continue worldwide to reduce cardiac risks associated with the virus - according to new research from the University of East Anglia.

17 Sep 2025

Projected surge in uninsured will strain local health systems

Jake Margo Jr. stood in the triage room at Starr County Memorial Hospital explaining why a person with persistent fever who could be treated with over-the-counter medication didn't need to be admitted to the emergency room.

17 Sep 2025

Daylight saving time does not increase heart attack risk, study shows

A large U.S. registry study of more than 168,000 patients found that daylight saving time (DST) clock changes did not increase heart attack rates or worsen in-hospital outcomes. The findings suggest that the lost or gained hour is unlikely to trigger acute myocardial infarction in contemporary care.

10 Sep 2025

AI voice agents helped improve accuracy of blood pressure measurements in older adults

Artificial intelligence (AI) voice agents helped older adults with high blood pressure to accurately report their blood pressure readings and improved blood pressure management, according to preliminary research presented at the American Heart Association's Hypertension Scientific Sessions 2025.

8 Sep 2025

Trial shows no meaningful gains with mavacamten in nonobstructive hypertrophic cardiomyopathy

Mavacamten treatment at 48 weeks was not associated with significant improvements in patient-reported health status or peak oxygen consumption compared with placebo in patients with symptomatic nonobstructive hypertrophic cardiomyopathy, according to late-breaking research presented in a Hot Line session today at ESC Congress 2025 and simultaneously published in New England Journal of Medicine.

1 Sep 2025

Updated guidelines aim to standardize valvular heart disease care across Europe

Updated ESC/EACTS Guidelines, being published today at ESC Congress 2025, aim to improve the way that patients with valvular heart disease are diagnosed and treated, responding to robust new evidence that suggests some newer and less invasive treatments could be offered more widely and consistently to patients.

30 Aug 2025

Cardiovascular health declines in older adults with heart conditions

U.S. adults, ages 65 and older, with high blood pressure, heart failure or stroke had significant declines in cardiovascular health, according to new research published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

20 Aug 2025

Exercise-based cardiac rehab benefits atrial fibrillation

Exercise-based cardiac rehabilitation lessens the severity, frequency, and recurrence of the most common form of irregular heart rhythm, atrial fibrillation, or AF for short, finds a pooled data analysis of the available research, published online in the British Journal of Sports Medicine.

30 Jul 2025