Marriage and risk of dementia

Marriage and risk of dementia: systematic review and meta-analysis of observational studies
Journal of Neurology, Neurosurgery & Psychiatry 2018;89:231-238.
Andrew Sommerlad, et al.

Being married is associated with reduced risk of dementia than widowed and lifelong single people, who are also underdiagnosed in routine clinical practice. Dementia prevention in unmarried people should focus on education and physical health and should consider the possible effect of social engagement as a modifiable risk factor.