The role of diet in Parkinson's disease has been studied extensively, with particular foods being associated with either increased or decreased risk. For example, dairy products have been associated with increased Parkinson's disease risk,[1] while coffee or tea consumption have been associated with decreased risk.[2][3] Another observational study suggested that increased intake of foods such as fresh fruits and vegetables, olive oil, wine, coconut oil, and non-fried fish were associated with reduced risk, while consuming foods such as beef, fried foods, soda, and dairy products were associated with increased risk.[4]
Although the above research suggests that an overall healthier diet pattern may help to decrease Parkinson's disease risk, cohort studies examining the associations between healthy diet patterns and Parkinson's disease have been inconclusive.[5] However, multiple studies have noted associations between reduced Parkinson's disease risk and adherence to a Mediterranean diet.[6][5]