United StatesA new study suggests that lower cardiac output, which measures how much blood the heart pumps, may predict faster brain shrinkage in individuals carrying the APOE-e4 gene variant, a significant genetic risk factor for Alzheimer's disease. Researchers tracked 756 adults aged 50 to 92 over up to 11 years and found that those with lower cardiac output had greater brain volume loss, especially in areas affected by Alzheimer's. This study, published in Alzheimer's & Dementia: The Journal of the Alzheimer's Association, highlights that non-genetic factors like heart function might play a role in Alzheimer's progression. Experts note that while the study identifies an association between reduced cardiac output and brain atrophy, it does not prove direct causation. The research adds to ongoing efforts to understand Alzheimer's beyond purely genetic explanations.
Bias read (Center): The article presents a scientific study on Alzheimer's disease and its potential relationship with cardiac output. It includes balanced quotes from both the lead researcher and an independent expert, emphasizing that the study identifies an association but does not prove causation. There is no overt
