Joondalup [Australia], November 23: If you are one of those people who can't start their day without a cup of hot coffee, we have some good news for you. New research has found that drinking higher amounts of coffee can make you less likely to develop Alzheimer's disease. The findings of this research were published in the 'Frontiers in Aging Neuroscience Journal'.

As part of the Australian Imaging, Biomarkers and Lifestyle Study of Ageing, researchers from Edith Cowan University (ECU) investigated whether coffee intake affected the rate of cognitive decline of more than 200 Australians over a decade. Lead investigator Dr Samantha Gardener said that the results showed an association between coffee and several important markers related to Alzheimer's disease.

"We found participants with no memory impairments and with higher coffee consumption at the start of the study had a lower risk of transitioning to mild cognitive impairment - which often precedes Alzheimer's disease - or developing Alzheimer's disease over the course of the study," she said. Drinking more coffee gave positive results in relation to certain domains of cognitive function, specifically executive function which includes planning, self-control, and attention. Skincare Tips: Why Do We Need Different Routines for Summer and Winter? Here's Why.

Higher coffee intake also seemed to be linked to slowing the accumulation of the amyloid protein in the brain, a key factor in the development of Alzheimer's disease. Dr Gardener said that although further research was needed, the study was encouraging as it indicated drinking coffee could be an easy way to help delay the onset of Alzheimer's disease. "It's a simple thing that people can change," she said.

It could be particularly useful for people who are at risk of cognitive decline but haven't developed any symptoms. "We might be able to develop some clear guidelines people can follow in middle age and hopefully it could then have a lasting effect," she said. If you only have allowed yourself one cup of coffee a day, the study indicated you might be better off treating yourself to an extra cup, although a maximum number of cups per day that provided a beneficial effect was not able to be established from the current study.

"If the average cup of coffee made at home is 240g, increasing to two cups a day could potentially lower cognitive decline by eight per cent after 18 months," Dr Gardener said. "It could also see a five per cent decrease in amyloid accumulation in the brain over the same time period," she added. In Alzheimer's disease, the amyloid clump together forming plaques that are toxic to the brain. Poor Sleep Linked to Negative Impact on Health, Says Study.

The study was unable to differentiate between caffeinated and decaffeinated coffee, nor the benefits or consequences of how it was prepared (brewing method, the presence of milk and/or sugar etc). Dr Gardener said that the relationship between coffee and brain function was worth pursuing.

"We need to evaluate whether coffee intake could one day be recommended as a lifestyle factor aimed at delaying the onset of Alzheimer's disease," she said. Researchers are yet to determine precisely which constituents of coffee are behind its seemingly positive effects on brain health. Though caffeine has been linked to the results, preliminary research showed that it may not be the sole contributor to potentially delaying Alzheimer's disease.

"Crude caffeine" is the by-product of de-caffeinating coffee and has been shown to be as effective in partially preventing memory impairment in mice, while other coffee components such as cafestol, kahweol and Eicosanoyl-5-hydroxytryptamide have also been seen to affect cognitive impairment in animals in various studies," she said.

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