Tag Archives: Dementia

Intense (VO2peak) Aerobic Exercise Raises Cognition, Alzheimer’s Disease Risks Lowered In Older Adults

February 5, 2020 boomersdaily Leave a comment

From the Brain Plasticity Journal (Dec 26, 2019):

In conclusion, increased CRF (cardiorespiratory fitness) following this six-month intervention was associated with enhanced brain glucose metabolism in the PCC (posterior cingulate cortex), a region linked to AD, and cognition among late-middle-aged individuals at risk for AD. If these findings are supported by a larger-scale study, this would provide strong evidence that adults at risk for AD may enhance brain function and cognition by engaging in aerobic exercise training.

PCC glucose metabolism correlated positively with change in VO₂peak (the highest value of VO2 attained upon an incremental or other high-intensity exercise test, designed to bring the sub- ject to the limit of tolerance)…Improvement in executive function correlated with increased VO₂peak. Favorable CRF adaptation after 26 weeks of aerobic exercise training was associated with improvements in PCC glucose metabolism and executive function, important markers of AD.

Aerobic exercise has been associated with reduced burden of brain and cognitive changes related to Alzheimer’s disease (AD). However, it is unknown whether exercise training in asymptomatic individuals harboring risk for AD improves outcomes associated with AD. We investigated the effect of 26 weeks of supervised aerobic treadmill exercise training on brain glucose metabolism and cognition among 23 late-middle-aged adults from a cohort enriched with familial and genetic risk of AD.

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Aging, Health, News, Studies

Dementia: Antioxidant “Flavonols” From Fruits & Vegetables Lower Alzheimer’s Risk By 48%

January 31, 2020 boomersdaily Leave a comment

From a Rush University Medical Center online article:

The study found that participants in the group with the highest flavonol consumption were 48% less likely to develop Alzheimer’s dementia later on in life than participants with the lowest level. Of the 186 people in the highest group, 28 people, or 15%, developed Alzheimer’s dementia, compared to 54 people, or 30%, of the 182 people in the lowest group.

People who eat or drink more foods with flavonol, which is found in nearly all fruits and vegetables, plus tea and wine, may be less likely to develop Alzheimer’s dementia, according to the Rush researchers. They published the results of their study in the Jan. 29 online issue of Neurology.

Flavonols are a type of flavonoid, a group of phytochemicals found in plant pigments. They are known for their beneficial effects on health due to their antioxidant and anti-inflammatory properties.

A total of 921 people with an average age of 81 participated in the Neurology study. These participants did not have Alzheimer’s dementia when starting the study.

Aging, Health, News, Studies

Studies: Depression Diagnosis Increases Risk Of Dementia For Decades

January 24, 2020 boomersdaily Leave a comment

From a PLOS Medicine online study:

Depression is associated with increased odds of dementia, even more than 20 years after diagnosis of depression, and the association remains after adjustment for familial factors. Further research is needed to investigate whether successful prevention and treatment of depression decrease the risk of dementia.

The risk of dementia is increased for decades after a diagnosis of depression, where those diagnosed with especially severe depressions are at increased risk.

Dementia is common among the elderly, causing severe individual suffering as well as societal strain. As the proportion of people aged 65 years and above is rapidly increasing in the world population, the number of individuals with dementia is expected to double within 20 years, and this condition was estimated to have a worldwide cost of US$604 billion in 2010. Effective treatments for dementia remain scarce; however, a preventive approach may be possible through the identification of high-risk individuals and potentially modifiable risk factors.

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Health, Videos

Health: “Myths And Realities Of Parkinson’s Disease” (Video)

Video January 11, 2020 boomersdaily Leave a comment

In this Neuro Talk, Parkinson’s Foundation Chief Scientific Officer, Jim Beck, PhD, debunks common myths and misconceptions about Parkinson’s disease.

Website

Aging, Health, Studies

Dementia: Cognitive Loss Is Greatest At “Slightest Level Of Hearing Loss”

December 30, 2019 boomersdaily Leave a comment

From a New York Times online article:

…the researchers demonstrated that the biggest drop in cognitive ability occurs at the slightest level of hearing loss — a decline from zero to the “normal” level of 25 decibels, with smaller cognitive losses occurring when hearing deficits rise from 25 to 50 decibels.

Hearing loss is now known to be the largest modifiable risk factor for developing dementia, exceeding that of smoking, high blood pressure, lack of exercise and social isolation, according to an international analysis published in The Lancet in 2017.

the new findings on cognitive losses linked to subclinical hearing loss, gleaned from among 6,451 people age 50 or older, suggest that any degree of hearing loss can take a toll.

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Health, News, Science

Health: “Understanding Parkinson’s Disease” (Nature Videos)

Video December 16, 2019 boomersdaily Leave a comment

Parkinson’s disease is a neurological condition that affects the brain and other parts of the nervous system. The gradual loss of nerve cells leads to a suite of characteristic motor and non-motor symptoms.

What causes these cells to die and how the pathology develops in the nervous system are not yet clear but multiple lines of investigation are being pursued to answer these questions. In this animation, we explore some of the latest in Parkinson’s disease research.

Website: https://www.nature.com/articles/s41583-019-0254-x

Health, Sleep, Studies, Uncategorized

Health Studies: Poor Sleep Associated With Non-Alzheimer’s Dementia And Impaired Cognition

December 12, 2019 boomersdaily Leave a comment

From a University of Toronto Medicine article:

“There are two important takeaways from this paper. One is that poor sleep is associated with brain immune dysregulation or dysfunction,” says Lim, the corresponding author for the paper.

“The second part is that dysfunction appears to be further associated with impaired cognition.”

The study shows that in adults with fragmented sleep – where people were waking up repeatedly instead of sleeping soundly – there was an effect on microglia, and the cells showed signs of accelerated aging and other abnormalities.

The researchers were then able to identify that these changes in the microglia could be associated with worse cognition in older adults, both with and without Alzheimer’s disease.

To read full study: https://advances.sciencemag.org/content/5/12/eaax7331

Aging, Health

Aging: “The Modern Epidemic Of Loneliness” (UC San Diego Video)

Video December 5, 2019 boomersdaily Leave a comment

As societal stresses have increased, loneliness and social isolation have become silent killers. Dilip Jeste, MD, a geriatric neuropsychiatrist who specializes in successful aging, explains how loneliness has become an epidemic, the risk factors, helpful interventions, and how we can harness wisdom for compassion, self regulation, and more.

Website: https://www.uctv.tv/shows/35226

Aging, Health

Health: “Key Techniques in Diagnosing Dementia”

December 4, 2019 boomersdaily Leave a comment

Exercise, Health, Reviews, Studies

Brain Health: “Package Of Lifestyle Changes” (Brisk Exercise, Healthy Diet & Sleep, Cognitive Training) Helps Prevent Dementia

November 17, 2019 boomersdaily Leave a comment

From a Wall Street Journal online article:

How Likely is Dementia - Source The Lancet, Gill Livingston, et al. — How Likely Is Dementia?

Dementia is a complicated disease that has multiple causes and risk factors, some of which remain unknown. Nevertheless, there is increasing evidence that people—even those who inherit genes that put them at greater risk of developing Alzheimer’s in later life—can improve their chances by adopting lifestyle changes.

“It’s not just about running three times a week,” says Sarah Lenz Lock, executive director of AARP’s Global Council on Brain Health. “Instead, it’s about a package of behaviors, including aerobic exercise, strength training, a healthy diet, sleep and cognitive training.”

When it comes to battling dementia, the unfortunate news is this: Medications have proven ineffective at curing or stopping the disease and its most common form, Alzheimer’s disease. But that isn’t the end of the story. According to a recent wave of scientific studies, we have more control over our cognitive health than is commonly known. We just have to take certain steps—ideally, early and often—to live a healthier lifestyle.

In fact, according to a recent report commissioned by the Lancet, a medical journal, around 35% of dementia cases might be prevented if people do things including exercising and engaging in cognitively stimulating activities. “When people ask me how to prevent dementia, they often want a simple answer, such as vitamins, dietary supplements or the latest hyped idea,” says Eric Larson, a physician at Kaiser Permanente in Seattle and one of a group of scientists who helped prepare the report. “I tell them they can take many common-sense actions that promote health throughout life.”