Marriage linked to lower risk of dementia. A new paper in the Journal of Neurology, Neurosurgery & Psychiatry by researchers from University College London found that people who are unmarried or widowed are at increased risk of developing dementia compared to married people. The review found that people who had never married were 42 percent more likely to develop dementia compared to married people, and widows and widowers were 20 percent more likely. The analysis used evidence from 15 previously published studies involving more than 800,000 people in Europe, North and South America and Asia. The question of why this is might be explained by similar studies, which show that people with spouses tend to be healthier than those without them. The researchers analyzed that married couples may motivate each other to exercise, eat healthfully, maintain social ties and smoke and drink less—all things that are associated with a lower risk for dementia. 

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