In a study published in the September issue of The American Journal of Medicine, researchers followed almost 2000 subjects for up to 10 years and found that the risk for developing Alzheimer’s disease was reduced by 76% for those who drank fruit and vegetable juices more than 3 times per week compared with those who drank juices less than once per week. A lower reduction (16%) was obtained for juice consumption once or twice per week.
Recent studies of Alzheimer’s disease biochemistry have focused on the accumulation of beta-amyloid peptide in the brain, and the action of hydrogen peroxide in mediating this process. Various studies have suggested that polyphenols, strong anti-oxidants available in many foods, might disrupt these processes and provide some protection against Alzheimer’s disease. Although some studies of anti-oxidant vitamins have been disappointing, this study is the first to examine juices rich in polyphenols as a preventive measure for Alzheimer’s disease.
The subjects were already part of the Kame Project, a prospective study of Japanese populations living in Hiroshima, Japan; Oahu, Hawaii; and the metropolitan area of Seattle, Washington. Drawing from the Seattle population, 1836 people were identified as free of dementia in 1992-1994, and were followed at 2-year time intervals until the end of 2001. Dietary consumption of fruit and vegetable juices was determined from self-administered questionnaires developed for Asian populations. Cognitive function was assessed by trained interviewers using a standardized test, with clinical follow-up resulting in clinical diagnoses for those patients showing impairment.
Writing in the article, Qi Dai, MD, PhD, states, “We found that frequent drinking of fruit and vegetable juices was associated with a substantially decreased risk of Alzheimer’s disease. This inverse association was stronger after adjustments for potential confounding factors, and the association was evident in all strata of selected variables. These findings are new and suggest that fruit and vegetable juices may play an important role in delaying the onset of Alzheimer’s disease”. Qi Dai also said that the next step is to investigate whether high blood concentrations of polyphenols high in major fruit and vegetable juices are associated with a reduced risk of cognitive decline and Alzheimer’s disease.
Pamela Poppalardo | alfa
The genes are not to blame
20.07.2018 | Technische Universität München
Targeting headaches and tumors with nano-submarines
20.07.2018 | Universitätsmedizin der Johannes Gutenberg-Universität Mainz
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences