Research suggests that Alzheimer disease is considered to be what type of factor?

Research indicates that Alzheimer’s disease is influenced by a combination of genetic and environmental factors, which is why it is categorized as partly genetic. Specifically, certain genes have been identified that increase the risk of developing Alzheimer’s, such as the APOE ε4 allele. However, having these genes does not guarantee that an individual will develop the disease, highlighting that genetics plays a significant but not exclusive role.

Moreover, environmental factors—such as lifestyle choices, diet, and social engagement—also contribute to the risk of Alzheimer's, suggesting that it is not purely a genetic condition. This complexity illustrates the multifactorial nature of the disease, where both inherited and external elements interact in its development. By understanding that Alzheimer’s is partly genetic, one can appreciate the role of both heredity and lifestyle in the context of cognitive health across the lifespan.