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Saturday, November 7

AHA Scientific Sessions 2026 Abstract

Extreme heat linked to excess US heart and blood vessel deaths

A statistical model estimated 45,103 excess deaths from heart and blood vessel disease in 2000–2023 compared with a scenario without extreme heat.A statistical model estimated 45,103 excess deaths from heart and blood vessel disease in 2000–2023 compared with a scenario without extreme heat.

A heart cross-section with a dark damaged patch sits beneath heat waves, beside a smaller intact heart and a group of upright, faceless people.
Cohort study in peoplePopulations
AHA Scientific Sessions 2026 Abstract

Blood protein patterns changed years before heart failure

More than 1,200 blood proteins were linked to future heart failure about 18 years before diagnosis, rising to about 3,600 closer to diagnosis.More than 1,200 blood proteins were linked to future heart failure about 18 years before diagnosis, rising to about 3,600 closer to diagnosis.

Blood plasma holds sparse and dense clusters of folded proteins, with a small heart cross-section and tangled fibers beside the denser cluster.
Cohort · 6,264 peopleMechanisms
AHA Scientific Sessions 2026 Abstract

Scan-based heart age linked to higher one-year cardiac risk

Over one year, cardiac events occurred in 20.5% of patients whose scan-based heart age exceeded their actual age by at least two years, versus 5.5% otherwise.Over one year, cardiac events occurred in 20.5% of patients whose scan-based heart age exceeded their actual age by at least two years, versus 5.5% otherwise.

A branching coronary artery narrowed by thick deposits sits among smaller artery sections with either wide openings or plaque-constricted passages.
Cohort · 1,672 peopleBiomarkers
AHA Scientific Sessions 2026 Abstract

Frequent loneliness linked to more heart disease and stroke

Stroke prevalence was 7.3% among persistently lonely adults versus 2.7% among never-lonely adults in a national survey.Stroke prevalence was 7.3% among persistently lonely adults versus 2.7% among never-lonely adults in a national survey.

A brain with a dark damaged region sits beside a heart and separated gray people, opposite a healthy brain surrounded by a closer group of people.
Cross-sectional · 31,470 peopleStroke
AHA Scientific Sessions 2026 Abstract

Lower teen blood pressure linked to lower cardiovascular risk

About 90% of the estimated cardiovascular disease burden linked to adolescent blood pressure involved levels not classified as high blood pressure today.About 90% of the estimated cardiovascular disease burden linked to adolescent blood pressure involved levels not classified as high blood pressure today.

A large intact heart cross-section and a smaller heart with a gray damaged patch sit among scattered blue-green and gray faceless figures.
Cohort · 1,366,513 peopleCardiovascular disease