Can Green Tea and Black Coffee Help With Dementia?

Could coffee and green tea be the new brain tonic? A large European study showed that drinking three to five cups of coffee a day in midlife cut Alzheimer's risk 65% in late life. University of South Florida researcher Gary Arendash credits caffeine: He says it reduces dementia-causing amyloid in animal brains. Others credit coffee's antioxidants.

As part of a German-French research project, a team led by Dr. Christa E. Müller from the University of Bonn and Dr. David Blum from the University of Lille was able to demonstrate for the first time that caffeine has a positive effect on tau deposits in Alzheimer's disease. The two-years project was supported with 30,000 Euro from the non-profit Alzheimer Forschung Initiative e.V. (AFI) and with 50,000 Euro from the French Partner organization LECMA. The initial results were published in the online edition of the journal Neurobiology of Aging.

Tau deposits, along with beta-amyloid plaques, are among the characteristic features of Alzheimer's disease. These protein deposits disrupt the communication of the nerve cells in the brain and contribute to their degeneration. Despite intensive research there is no drug available to date which can prevent this detrimental process. Based on the results of Prof. Dr. Christa Müller from the University of Bonn, Dr. David Blum and their team, a new class of drugs may now be developed for the treatment of Alzheimer's disease.

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