A lack of Vitamin D , polluted air , exposure to some pesticides and excessive minerals in drinking water can all raise the risk of dementia , researchers have said . In a number of studies , the University of Edinburgh research team said that environmental risk factors , such as those found in pollutant - heavy areas , can contribute to the onset of dementia . A third of dementia patients ’ illness remains unexplained , leaving environmental factors as a likely cause .
A lack of Vitamin D, polluted air, exposure to some pesticides and excessive minerals in drinking water can all raise the risk of dementia, researchers have said. Analysing a number of studies, the University of Edinburgh research team said that environmental risk factors, such as those found in pollutant-heavy areas, can contribute to the onset of dementia. A third of dementia patients’ illness remains unexplained, leaving environmental factors as a likely cause.