A new study conducted by the researchers at the National Neuroscience Institute in Singapore has shown that drinking one cup of black tea may reduce the risk of Parkinson’s disease by as much as 71 percent.
Researchers examined 63,257 Chinese women and men and compared their incidence of Parkinson’s with their intake of various beverages. By conducting an in-person questionnaire, they found that higher caffeine intake was linked with a 45 percent lower risk of Parkinson’s disease. They also found that those who drank 23 or more cups of black tea each month still had a 71 percent lower risk of Parkinson’s disease than those who drank less black tea.
The researchers of the study wrote: “Black tea, a caffeine-containing beverage, showed an inverse association with Parkinson’s disease risk that was not confounded by total caffeine intake or tobacco smoking. [This suggests that] ingredients of black tea other than caffeine appear to be responsible for the beverage’s inverse association with Parkinson’s disease.”
This research has found to only apply to black tea, not green tea. This study has been published in the American Journal of Epidemiology.