JOONDALUP researchers have found more reason to enjoy a cup of tea, with a review of existing research showing it can help prevent diseases such as Alzheimer’s and diabetes.
Researchers from ECU’s School of Medical and Health Sciences examined more than 100 studies from around the world that have looked at tea consumption.
They found that black, white and green tea can reduce the risk factors associated with Alzheimer’s disease and diabetes.
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READ NOWECU Centre for Excellence for Alzheimer’s Disease Research and Care research fellow Binosha Fernando said the review offered new lines of enquiry for scientists.
“There is strong evidence that tea consumption can lower the levels of beta amyloid b (Aβ) in the brain, the build-up of which can cause Alzheimer’s disease,” she said.
“In particular a number of studies have found that the flavonoid Epigallocatechin gallate (EGCG), which is found in tea, can reduce the levels of Aβ in the brain, which could delay the onset of Alzheimer’s disease.”
The researchers also examined the evidence that tea consumption could be protective against diabetes.
“Both population-based studies as well as human clinical trials have shown a link between tea consumption and a reduced risk of developing type 2 diabetes,” Dr Binosha said.
“One study found that drinking tea could result in a significant reduction in the symptoms of diabetes, including a 15-fold increase in insulin activity.
“Overall, tea appears to offer a safe and acceptable approach toward lowering the risk factors associated with diabetes and Alzheimer’s disease.
“What is needed now is more randomised, clinical trials which are placebo controlled using standardised doses to determine exactly the manner, type and amount of tea required to achieve these beneficial results.”
The researchers also recently identified depression and trouble sleeping as potential risk factors for Alzheimer’s disease.
The centre is currently investigating if a combination of the spice circimun and fish oil can potentially delay the onset of Alzheimer’s disease.
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