The links between heart and cognitive health are increasingly documented, and a new study from the American Heart Association (AHA), published in Strokeprovides new proof. It highlights three cardiovascular diseases that significantly increase the risk of cognitive decline:heart failurethe atrial fibrillation and the coronary heart disease.
Heart failure, characterized by a heart unable to pump blood effectively, affects almost 50% of affected patients cognitively. This decline affects key functions such as memory, language and planning. Scientists explain that the reduction in blood flow to the braincombined with a inflammation chronic, is the cause of these cognitive disorders.
Regarding atrial fibrillation, irregular heartbeat is associated with a 39% increased risk of developing cognitive impairment. This link is notably attributed to common risk factors between atrial fibrillation and dementia, such as hypertension and diabetes. Additionally, reduced blood flow to the brain due to atrial fibrillation directly affects cognitive abilities.
Coronary heart disease, finally, is characterized by the accumulation 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 have undergone heart attack of myocardium experience marked brain decline, particularly in executive functions and memory.
These findings highlight the importance of early prevention of cardiovascular diseases, which involves a healthy lifestyle. The AHA recommends in particular a balanced diet, regular exercise and management of risk factors such as hypertension and diabetes.
How does heart disease affect the brain?
Cardiovascular diseases such as heart failure and atrial fibrillation reduce the supply of oxygenated blood to the brain. This drop in blood flow directly impacts the brain areas responsible for memory, language and planning.
In addition, these pathologies promote chronic inflammation, which contributes to damage to brain cells. Calcium buildup in the arteries is also linked to an increased risk of dementia.
