Even mild abnormalities in heart function may be associated with tissue damage in brain regions responsible for memory and cognition, potentially increasing the risk of Alzheimer’s disease, according to a new study. The findings provide fresh evidence of the close relationship between cardiovascular health and brain function, highlighting the importance of early heart health monitoring.

Researchers examined the connection between cardiac dysfunction, brain structure and cognitive performance, discovering that subtle impairments in heart function were associated with tissue damage in areas of the brain linked to memory processing. The study found that this brain tissue damage largely explained the relationship between minor cardiac dysfunction and declining long term memory performance.

The findings suggest that reduced cardiac efficiency may affect blood flow to the brain over time, potentially contributing to structural changes that precede cognitive decline. Researchers believe these changes could serve as early indicators of neurodegenerative disorders, including Alzheimer’s disease, long before noticeable symptoms appear.

Alzheimer’s disease is the most common cause of dementia worldwide. According to WHO, more than 55 million people globally are living with dementia, with Alzheimer’s accounting for 60–70% of all cases. The number is expected to nearly triple by 2050 due to ageing populations, making early detection and prevention a growing public health priority.

Healthcare experts note that cardiovascular risk factors such as high blood pressure, diabetes, obesity and heart disease have increasingly been linked to cognitive decline. Maintaining good heart health through regular exercise, a balanced diet, blood pressure control and timely treatment of cardiovascular conditions may also help lower the risk of age related brain disorders.

Researchers emphasized that while the study identifies a significant association between heart function and brain health, further long term clinical studies are needed to determine whether improving cardiac function can slow or prevent cognitive decline.

The study adds to the growing body of evidence supporting the heart brain connection, highlighting that protecting cardiovascular health may play a crucial role in preserving memory, reducing the risk of dementia and promoting healthy ageing.