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
'Icebreaker' protein opens genome for t cell development, Penn researchers find
21.02.2018 | University of Pennsylvania School of Medicine
Similarities found in cancer initiation in kidney, liver, stomach, pancreas
21.02.2018 | Washington University School of Medicine
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
21.02.2018 | Life Sciences
21.02.2018 | Life Sciences
21.02.2018 | Materials Sciences