"Caffeine's Protective Effects Against Parkinson's Disease Confirmed, Regardless of Genetic Factors"
Regular consumption of tea or coffee containing caffeine has been found to significantly reduce the risk of developing Parkinson's Disease (PD) for individuals with Asian gene variants associated with the disorder. A study involving 4,488 subjects revealed that caffeine consumers with PD gene variants have a 4-8 times lower risk of PD compared to non-caffeine drinkers with the gene. The protective benefits of caffeine appeared to increase with higher doses, but even modest consumption below 200mg per day was beneficial. The exact interaction between caffeine and Asian PD gene variants is still unknown.