A new study finds that brain volumes of people who regularly eat vegetables, fruit, and fish are on average 2ml greater than brain volumes of those who often drink sugary beverages. A brain volume reduction of 3.6ml equals to one year of aging.
For the study, the researchers from Erasmus University, Rotterdam, analyzed diets of 4,213 adults with an average age of 66 who didn’t have dementia. The participants also had to take scans to determine their brain volumes.
Dr Meike Vernooij, the author of the study, says: “People with greater brain volume have been shown in other studies to have better cognitive abilities, so initiatives that help improve diet quality may be a good strategy to maintain thinking skills in older adults.”
A new study, led by the University of East Anglia (UEA) in the United Kingdom, suggests that a class of common drugs used to treat such conditions as depression, incontinence, and gastrointestinal disorders connected to the higher risk of developing dementia in the future.
For the study, which is considered to be the largest study of the alleged link, the researchers used medical data of more than 300,000 persons over the age 65. This sample included around 50,000 patients with dementia.
Study leader Dr. George Savva, who works in the School of Health Sciences at UEA, explains: “This research is really important because there are an estimated 350 million people affected globally by depression, and bladder conditions requiring treatment are estimated to affect over 13 percent of men and 30 percent of women in the U.K. and [United States].”
A group of researchers claims that they are close to developing a blood test that will be able to detect the Alzheimer’s disease long before the symptoms appear.
One of the main problems in treating the Alzheimer’s disease is that it is always diagnosed at a relatively late stage as the symptoms may develop over the many years.
In a recent study, published in the journal EMBO Molecular Medicine, researchers wanted to understand whether measuring the relative levels of healthy and pathological amyloid-beta in the blood could identify Alzheimer’s disease at its early stages.
The initial phase of the study demonstrated promising results – in participants who showed subtle early symptoms of the Alzheimer’s disease, the test detected changes in levels of amyloid-beta that associated with abnormal deposits visualized using brain scans.
A new study from the United Kingdom shows a link between the loss of dopamine-firing cells in the brain and ability of the brain to form new memories. These findings may lead to a new method for diagnosing Alzheimer’s.
For the study, a team of researchers used a type of MRI scan which is called 3Tesla. It is twice stronger than standard MRI. They scanned the brains of 51 healthy adults, 30 patients with a mild cognitive impairment, and 29 with the diagnosis of Alzheimer’s disease.
Having analyzed the results of the scanning, the researchers concluded that there was a link between the size of two key brain areas – the ventral tegmental and hippocampus – and the ability of the patients to learn new information.
Lead study author Annalena Venneri, of the Sheffield Institute for Translational Neuroscience at the University of Sheffield in the United Kingdom, explains: “The hippocampus is associated with forming new memories, therefore these findings are crucial to the early detection of Alzheimer’s disease. The results point at a change which happens very early on, which might trigger Alzheimer’s disease.”
A recent research suggests that people with high blood sugar experience worse long-term cognitive decline compared to their peers with the normal level of blood sugar.
For their study, a team of researchers tracked 5,189 participants, including 55% women, whose average age was 66 years. They analyzed their level of cognitive function between 2004–2005 and 2014–2015. Over time, the scientists monitored levels of HbA1c, or glycated hemoglobin, a measure of blood sugar control.
The analysis of the received data showed that participants with greater levels of HbA1c experienced much higher rate of decline.
The researchers, led by epidemiologist Wuxiang Xie from Imperial College London, explain in their paper: “Our findings suggest that interventions that delay diabetes onset, as well as management strategies for blood sugar control, might help alleviate the progression of subsequent decline over the long-term.”