The researchers found that consuming a lot of coffee can slow down the decline in mental abilities. This area in the brain is particularly important for planning, self-control, and attentiveness. A decrease in these abilities is often associated with a preliminary stage of Alzheimer’s dementia. Drinking coffee also slows down the formation of so-called amyloid beta plaques, which are suspected to be significantly involved in the development of Alzheimer’s disease.

However, it remains unclear how much coffee is best to drink per day in order to have a positive effect on memory function. According to the researchers, anyone who has only been drinking one cup a day can definitely drink a second one: An additional cup reduces the risk of mental impairment by eight percent after 18 months, reported study director Dr. Samantha Gardener from Edith Cowan University (ECU).

Caffeine is not solely responsible for the positive effect

For the future, the Australian researchers hope to develop guidelines for middle-aged people on the basis of this study on how they can slow down a decline in memory performance. The scientists are optimistic that these could also include simple things such as increased coffee consumption. In further studies, they now want to find out which components of the coffee bean cause the positive effect. Animal experiments have shown that the caffeine is probably not solely responsible for this. Other ingredients such as cafesterol and kahweol have also had positive effects on brain function and these are also found in decaffeinated coffee.

The results were published as part of the AIBL study. This long-term study examines the influence of cognitive properties as well as lifestyle and general health on the development of Alzheimer’s. The participants consisted of patients diagnosed with Alzheimer’s disease, people with mild cognitive impairment and healthy people who are concerned about their memory performance.

What: DOI 10.3389 / fnagi.2021.744872

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