Genetics

This blog post examines a recent study investigating whether genetic susceptibility to multiple sclerosis is associated with working memory performance in healthy young adults. Using polygenic risk scores, cognitive testing, and diffusion tensor imaging, the researchers found that higher genetic risk for multiple sclerosis was linked to poorer working memory specifically among low-performing individuals, while no strong association was observed between MS risk and white matter fractional anisotropy. The findings suggest that MS-related genetic liability may influence cognitive traits before clinical disease appears, while also highlighting the need for replication in larger and more diverse populations.