Cup of tea perks up brain activity
WHEN you want to unwind, a steaming cup of tea can be the perfect option. And it seems relaxation is not the only benefit – as the drink may also improve brain performance, according to research.
Neurological activity increases noticeably around half an hour after drinking black or green tea, a study found, including processes linked to memory and decision making.
It is unclear which ingredients are responsible for the effect, but previous studies suggest a pivotal role is played by antioxidants known as flavonoids – which are unaffected by the addition of milk.
These are already thought to help control inflammation, promote blood vessel function andd limit clogging of the arteries.
For the latest study, researchers at Newcastle University versity investigated brainwave patternsterns to establish the effect of tea on various neurological functions.
Eight volunteers rs were asked to drink a cup made with green or black leaves before having ving their brain activity measured.sured.
Electrodes attachedached to their heads found three types of brainrainwave increased withinthin an hour – alpha, beta and theta.
There was a highly significantant increase in the thetaeta waves between 30 minutes and an hour later, says the study published in Nutritionitional Neuroscience.
Both black and d green tea stimulated the activity, which is linked with improved cognitive function.
Less significant but still notable was an increase in alpha and beta waves, which are connected to alertness, memory and logical reasoning.
Study leader Dr Edward Okello, executive director of the Medicinal Plant Research Group at Newcastle University, said: “Tea has been associated with many mental benefits, such as attention enhancement, clarity of mind and relaxation.”
He added that the findings provide further evidence for the drink’s assumed benefits.
“The highly significant increase in theta waves post-consumption may be an indication of [tea [tea’s]s] putative role in cognitive function, alertness and attention,” he said.
Previous research has shown that drinking three to four cups of tea a day may cut the chance of having a heart attack.
The drink can also help prevent type 2 diabetes, and slows the progression of the disease once it develops.
The antioxidants it contains have been found to halt certain effects of ageing, while regularly drinking black tea has been shown to visibly lower stress levels.
White tea could also help prevent obesity, as it was found to lessen the growth of new fat cells.
— Daily Mail.