Frontiers | Vitamin D and focal brain atrophy in PD with non-dementia: a VBM study
1 Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China 2 Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China Background: The status of vitamin D has been proposed to have an impact on cognition. Gray matter volume (GMV) is a potential marker of cognitive function. We investigated whether lower serum 25-hydroxyvitamin D level was associated with reduced