There is a link between your heart and cognitive health

The links between heart and cognitive health are increasingly documented, and a new study from the American Heart Association (AHA), published in Stroke, provides new evidence. It highlights three cardiovascular diseases that significantly increase the risk of cognitive decline: heart failure, atrial fibrillation, and coronary artery disease.


Heart failure, characterized by a heart unable to pump blood efficiently, affects nearly 50% of patients cognitively. This decline impacts key functions such as memory, language, and planning. Scientists explain that reduced blood flow to the brain, combined with chronic inflammation, is the root cause of these cognitive issues.

Regarding atrial fibrillation, the irregularity of heartbeats is associated with a 39% increased risk of developing cognitive impairment. This link is primarily attributed to common risk factors between atrial fibrillation and dementia, such as hypertension and diabetes. Additionally, the reduced blood flow to the brain due to atrial fibrillation directly affects cognitive abilities.

Coronary artery disease, lastly, is characterized by the buildup of plaques in the arteries, limiting blood supply to the heart and brain. According to the study, people with this condition have a 27% higher risk of developing dementia. Up to 50% of individuals who suffer a heart attack experience significant brain decline, particularly in executive functions and memory.

These findings emphasize the importance of early prevention of cardiovascular diseases, which involves maintaining a healthy lifestyle. The AHA specifically recommends a balanced diet, regular physical exercise, and managing risk factors such as hypertension and diabetes.

How do heart diseases affect the brain?

Cardiovascular diseases like heart failure and atrial fibrillation reduce the supply of oxygenated blood to the brain. This decreased blood flow directly impacts brain regions responsible for memory, language, and planning.

Moreover, these conditions promote chronic inflammation, which contributes to damaging brain cells. The accumulation of calcium in the arteries is also linked to an increased risk of dementia.