Regular high caffeine consumption affects dopamine function in patients with Parkinson's disease, shows a new international study. Caffeine consumption before undergoing diagnostic brain dopamine imaging may also affect the imaging results.
A follow-up study led by the University of Turku and Turku University Hospital in Finland examined how caffeine consumption affects brain dopamine function over an extended period in patients diagnosed with Parkinson's disease. The dopamine function of the brain was assessed with single photon emission computed tomography to measure dopamine transporter binding.
"While caffeine may offer certain benefits in reducing risk of Parkinson's disease, our study suggests that high caffeine intake has no benefit on the dopamine systems in already diagnosed patients. A high caffeine intake did not result in reduced symptoms of the disease, such as improved motor function," says Kaasinen.
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