Regularly drinking green tea could protect the brain against Alzheimer's and other forms of dementia, according to scientists at Newcastle University.
The study showed chemicals created when the tea is digested help prevent the degeneration of brain cells.
Similar research has hinted the beverage could also help protect against some forms of cancer.
The Alzheimer's Research Trust said diet and lifestyle were important in assessing the risks of the disease.
The study is published in the academic journal Phytomedicine.
'Diet and lifestyle'
Project leader Dr Ed Okello, from the university's School of Agriculture, Food and Rural Development, said: "We found when green tea is digested, the resulting chemicals are actually more effective against key triggers of Alzheimer's development than the undigested form of the tea.
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