Why do some people remain mentally sharp into old age, while others experience cognitive impairments earlier in life? Two recent studies involving Forschungszentrum Jülich provide new answers to this question. They show that brain health does not depend on a single factor, but on the interaction of many influences throughout our entire lives.
At the heart of both studies is the "exposome." This is a concept that refers to the totality of all environmental and lifestyle factors to which a person is exposed over their lifetime—from diet and exercise to diseases, air quality, and social conditions. Instead of examining these influences in isolation, the researchers aim to understand how they interact with one another.
Many small influences—one large effect
In a study published in Nature Communications, a research team analyzed extensive data from the UK Biobank—a long-term prospective biobank study in the U.K. containing health-related data from hundreds of thousands of people. The work was led by Prof. Dr. Sarah Genon and carried out primarily at the Institute of Neuroscience and Medicine—Brain and Behavior (INM-7) at Forschungszentrum Jülich. The lead author is Mostafa Mahdipour, a doctoral researcher in her research group.
