Stroke News and Research

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A stroke is a medical emergency. Strokes happen when blood flow to your brain stops. Within minutes, brain cells begin to die. There are two kinds of stroke. The more common kind, called ischemic stroke, is caused by a blood clot that blocks or plugs a blood vessel in the brain. The other kind, called hemorrhagic stroke, is caused by a blood vessel that breaks and bleeds into the brain. "Mini-strokes" or transient ischemic attacks (TIAs), occur when the blood supply to the brain is briefly interrupted.

Study warns of rising cognitive impairment following a heart attack

The chance of developing cognitive impairment was significantly higher for people who have had a heart attack, according to a study published today in Stroke, the peer-reviewed scientific journal of the American Stroke Association, a division of the American Heart Association.

14 May 2026

New trial aims to improve ATTR-CM diagnosis in heart failure

Transthyretin amyloid cardiomyopathy (ATTR-CM) is an increasingly recognized yet frequently underdiagnosed cause of heart failure, particularly among older adults.

13 May 2026

Study improves prediction of dangerous outcomed from hypertrophic cardiomyopathy

A sweeping international study has identified ways to detect patients who are at serious risk of sudden death, heart failure or other dangerous outcomes from heart thickening known as hypertrophic cardiomyopathy.

13 May 2026

Pregnancy not linked to increased myasthenia gravis flare-up risk

For female participants with myasthenia gravis, pregnancy is not associated with an increased risk of serious flare-ups of the disease, or new or worsening symptoms, according to a study published May 13, 2026, in Neurology, the medical journal of the American Academy of Neurology.

13 May 2026

Fine particle pollution may quietly damage brain function over time

The air pollution we breathe daily could be harming more than just our lungs and hearts. New research from McMaster University suggests that fine particles from traffic, industry and wildfire smoke is linked to worse cognitive function.

13 May 2026

Perimenopausal women face higher risk of low heart health

Perimenopausal women were two times more likely to have a low cardiovascular health score compared to women having regular menstrual cycles, according to an analysis of nationwide U.S. data published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

13 May 2026

Cannabis and tobacco co-use may increase psychosis risk

A new multisite study published in Nature Mental Health found that using cannabis and tobacco together increases the risk of developing psychotic disorders like schizophrenia among those considered high risk.

12 May 2026

Two leading heart risk tools pass a major global test

A multinational Nature Medicine validation study found that PREVENT and SCORE2 cardiovascular risk equations performed generally well across 6.4 million people from observational cohorts and randomized trials. The findings support broader use of these tools for CVD risk stratification, while highlighting the need for local calibration and more validation in underrepresented regions.

11 May 2026

Breathing polluted air before surgery may worsen recovery outcomes

Findings indicate that elevated fine PM exposure before surgery correlates with higher postoperative complication rates, urging further research in this area.

11 May 2026

Brain artery widening may drive lacunar stroke more than artery narrowing

Abnormal brain artery widening is associated with lacunar stroke, indicating a shift in understanding the mechanisms behind small vessel disease in the brain.

11 May 2026

Online friendships with strangers linked to greater adult loneliness

A first-of-its-kind study of U.S. adults suggests that all of those strangers you're friends with on social media are not helping you to feel less lonely.

8 May 2026

Cardiometabolic diseases remain leading cause of excess American mortality

Between 1999 and 2022, the US had substantially higher death rates than other wealthy nations, largely due to cardiovascular disease, metabolic diseases (including diabetes), Alzheimer's disease and related dementias, and drug and alcohol complications.

8 May 2026

AI-powered MRI scans predict diabetes and heart disease risk

Research shows AI-enhanced MRI body composition metrics can predict diabetes and heart disease risks, offering insights for better health screening practices.

8 May 2026

Scientists identify powerful human antibodies capable of neutralizing measles virus

Scientists at La Jolla Institute for Immunology (LJI) are the first in the world to characterize human antibodies capable of neutralizing measles virus.

7 May 2026

Research links muscle loss, weaker grip and slower walking pace to higher risk of stroke

Muscle loss, a weaker grip and a slower walking pace were associated with a higher risk of stroke in adults, according to new research published today in Stroke, the peer-reviewed scientific journal of the American Stroke Association, a division of the American Heart Association.

7 May 2026