Showing posts with label cognitive function. Show all posts
Showing posts with label cognitive function. Show all posts

Thursday, December 12, 2024

Advantages of physical activity for older people

 The new study, published in the International Journal of Behavioral Nutrition and Physical Activity, found that, on average, people aged 50 to 83 who did more moderate to vigorous physical activity than usual on a given day did better in memory tests the day after.

Associations of accelerometer-measured physical activity, sedentary behaviour, and sleep with next-day cognitive performance in older adults: a micro-longitudinal study | International Journal of Behavioral Nutrition and Physical Activity | Full Text

Guess I better go to the gym today.  When it's cold or raining, that's a tough haul for me.



Wednesday, April 05, 2017

Life style or genetics: The super agers

 I know a few "super agers" over 90, and although I can't comment on their exercise habits, I do know they maintain an active intellectual life (including e-mail, internet, music) and have a better social life than many younger people. 

"While there’s currently no proven method to preserve cortex volume, research has shown specific lifestyle changes that seniors can perform to help keep themselves sharp as they age, Kornel and Wright said. These include:
http://www.cbsnews.com/news/brain-scans-reveal-mental-secret-of-super-agers/ 

Links to recent research on lifestyle and cognitive decline:

https://s3-us-west-1.amazonaws.com/paperchase-aging/pdf/NjJf3fWGKw4e99CyC.pdf This is the 2014 article with the chart on lifestyle changes like diet, exercise, supplements.
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4931830/  This is the follow up article on the previous one. Reports on changes and brain scans.
 
https://www.jstage.jst.go.jp/article/circj/81/2/81_CJ-16-1011/_pdf Published this year about B12 and homocysteine. 
 
http://www.buckinstitute.org/buck-news/Memory-loss-associated-with-Alzheimers-reversed The above cognitive studies explained in everyday English

Saturday, August 13, 2016

Probably not potato chips and ice cream

“The Mediterranean-style diet (MedDiet) involves substantial intake of fruits, vegetables, and fish, and a lower consumption of dairy, red meat, and sugars. Over the past 15 years, much empirical evidence supports the suggestion that a MedDiet may be beneficial with respect to reducing the incidence of cardiovascular disease, cancer, metabolic syndrome, and dementia. A number of cross-sectional studies that have examined the impact of MedDiet on cognition have yielded largely positive results. The objective of this review is to evaluate longitudinal and prospective trials to gain an understanding of how a MedDiet may impact cognitive processes over time. The included studies were aimed at improving cognition or minimizing of cognitive decline. Studies reviewed included assessments of dietary status using either a food frequency questionnaire or a food diary assessment. Eighteen articles meeting our inclusion criteria were subjected to systematic review. These revealed that higher adherence to a MedDiet is associated with slower rates of cognitive decline, reduced conversion to Alzheimer’s disease, and improvements in cognitive function. The specific cognitive domains that were found to benefit with improved Mediterranean Diet Score were memory (delayed recognition, long-term, and working memory), executive function, and visual constructs. The current review has also considered a number of methodological issues in making recommendations for future research. The utilization of a dietary pattern, such as the MedDiet, will be essential as part of the armamentarium to maintain quality of life and reduce the potential social and economic burden of dementia.”

Adherence to a Mediterranean-Style Diet and Effects on Cognition in Adults: A Qualitative Evaluation and Systematic Review of Longitudinal and Prospective Trials. Roy J. Hardman, Greg Kennedy, Helen Macpherson, Andrew B. Scholey and Andrew Pipingas. Frontiers in Nutrition, vol. 3, page 22 -, 2016. DOI 10.3389/fnut.2016.00022

Tuesday, April 12, 2016

More on my wonderful chocolate drink

Remember when I was blogging about the wonderful benefits of dark chocolate, for brain and body, including weight loss? Check back here, and here, and here, in case you've forgotten.  After reading about a drink to help cognitive function, I thought, how hard could that be to mix up, so I started making a dark 100% cacao drink (Hersey's brown ribbon container), one to one with Splenda.  But, also, peanut powder for cooking that is 85% less fat is now available, so today I mixed some of the peanut powder with my  chocolate drink, and Shazam!, it was good.  I don't know if it has any health or brain benefits; but I just love the chocolate peanut butter flavor.

Jif is not my peanut butter of choice (I buy Krema), however, it does have handy "to go" packages that are just right for my husband's trips to Haiti.  He misses the regular lunch time due to his schedule and eats peanut butter jelly in the dorm, and these are just perfect.

Friday, October 23, 2015

A rich vocabulary protects against dementia

http://www.sciencedaily.com/releases/2014/10/141021085524.htm

'Cognitive reserve' is the name given to the brain's capacity to compensate for the loss of its functions. This reserve cannot be measured directly; rather, it is calculated through indicators believed to increase this capacity.

A research project at the University of Santiago de Compostela (USC) has studied how having a wide vocabulary influences cognitive reserve in the elderly.

As Cristina Lojo Seoane, from the USC, co-author of the study published in the journal Anales de PsicologĂ­a (Annals of Psychology), explains: "We focused on level of vocabulary as it is considered an indicator of crystallised intelligence (the use of previously acquired intellectual skills). We aimed to deepen our understanding of its relation to cognitive reserve."

The research team chose a sample of 326 subjects over the age of 50 -- 222 healthy individuals and 104 with mild cognitive impairment. They then measured their levels of vocabulary, along with other measures such as their years of schooling, the complexity of their jobs and their reading habits.

They also analysed the scores they obtained in various tests, such as the vocabulary subtest of the 'Wechsler Adult Intelligence Scale' (WAIS) and the Peabody Picture Vocabulary Test.

"With a regression analysis we calculated the probability of impairment to the vocabulary levels of the participants," Lojo Seoane continues.

The results revealed a greater prevalence of mild cognitive impairment in participants who achieved a lower vocabulary level score.

"This led us to the conclusion that a higher level of vocabulary, as a measure of cognitive reserve, can protect against cognitive impairment," the researcher concludes.”

So instead of tweets and texting, perhaps you should blog?

"There is strong indication that a particular set of life activities are associated with a reduced risk of developing dementia and with a slower rate of memory decline in normal ageing. These include having a higher education, mentally stimulating occupations, strong social networks and having a variety of leisure interests. The amount of cognitive reserve appears to be plastic and influenced by aspects of experience in every stage of life."
Cognitive reserve--can we increase it?

Sunday, July 12, 2015

Diabetics need to take charge of their diets and their health

A new study published this week in the journal Neurology shows that people with type 2 diabetes demonstrate a decline in cognitive skills and ability to perform daily activities over the course of only two years.

  • After two years, the people with diabetes showed greater declines in gray matter as well as impairments in their ability to regulate blood flow in the brain than the people without.
  • Blood flow regulation decreased by an average of 65 percent in the participants with diabetes.
  • Among participants with diabetes, scores on thinking and memory tests decreased by an average of 12 percent, from 46 to 41 points, while test scores of the participants without diabetes stayed the same at 55 percent.
  • Higher levels of inflammation were correlated with greater difficulties with blood flow regulation.
  • Those with the highest levels of blood flow regulation impairment at the outset of the study had more difficulties performing daily activities (such as cooking and bathing) after two years.

Diet changes that could help

Despite cheese's less-than-healthy reputation, a recent study in the American Journal of Clinical Nutrition showed that cheese-eaters actually have a 12 percent lower risk of the disease than their non cheese-eating counterparts.
Plus, people who ate more cheese, fermented milk and yogurt in the study were also more likely to have a decreased diabetes risk than people who ate less of these foods, noted the

Researchers from the Louisiana State University Agricultural Center found that people who regularly eat tree nuts (we're talking pistachios, walnuts, almonds and cashews) have a lower risk of Type 2 diabetes, as well as heart disease and metabolic syndrome.

University of Washington and University of Pittsburgh researchers found that people who walked the most in their study -- which included 1,826 people from Native American communities -- had a 29 percent lower risk of diabetes, compared with those who walked the least.

Apple, pear and blueberry eaters have lower risks of Type 2 diabetes, according to a study in the American Journal of Clinical Nutrition.
The study was based on the diets of 200,000 people. HuffPost Canada reported that anthocyanins and fruits rich in anthocyanins were linked with lower diabetes risk; flavanoids, however, were not.

Eating a range of fruits and veggies could help to lower the risk of Type 2 diabetes, Medical Daily reported.

Drinking alcohol at a moderate level is linked with a lower risk of Type 2 diabetes for some people, according to an American Journal of Clinical Nutrition study.  Harvard researchers found that for women with refined carb-heavy diets, moderate alcohol consumption is linked with a decreased diabetes risk of 30 percent, compared with non-imbibing women who eat similar diets, Reuters reported.

Chinese researchers found earlier this year that coffee may stop a protein linked with Type 2 diabetes from building up, thereby possibly lowering the risk of the disease, WebMD reported. The research, published in the Journal of Agricultural and Food Chemistry, suggests that three particular compounds found in coffee are able to have this beneficial effect: caffeine, chlorogenic acid and caffeic acid, according to WebMD.

HuffPost Science, July 11, 2015

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2769828/

Tuesday, February 17, 2015

Resistance Training improves cognitive function in older women

[Excerpts from the article] The EXCEL (EXercise for Cognition and Everyday Living) study was a 6-month randomized trial. Eighty-six community-dwelling women 70 to 80 years old were randomly allocated to twice-weekly resistance training (RT) (28 women), twice-weekly Aerobic Training (AT) (30 women), or twice-weekly balance and tone (BAT) training (control group) (28 women). Participants were classified as having probable mild cognitive impairment if they had a score lower than 26 out of 30 on the Montreal Cognitive Assessment8 and had subjective memory complaints. . . .

In senior women with subjective memory complaints, 6 months of twice-weekly RT improved selective attention/conflict resolution, associative memory, and regional patterns of functional brain plasticity compared with twice-weekly BAT exercises. In contrast, 6 months of twice-weekly AT improved physical function. We provide novel evidence that RT can benefit multiple domains in those at risk for dementia.

While we previously demonstrated that 12 months of twice-weekly RT significantly improved Stroop Test performance in cognitively healthy women 65 to 75 years old, (3) our current study found an improvement after only 6 months in women 70 to 80 years old with probable mild cognitive impairment. Thus, the benefits of RT on selective attention/conflict resolution may be more potent among those at greater risk for dementia.

Baker et al (6) previously demonstrated that 6 months of AT improved selective attention/conflict resolution and set shifting performance in older women with amnestic mild cognitive impairment. This may be attributed to differences in both the frequency and intensity of AT between the 2 studies. In addition, our study participants were older and had lower baseline Mini-Mental State Examination scores.

We also demonstrated that 6 months of RT twice-weekly significantly improved associative memory performance, co-occurring with positive functional changes in hemodynamic activity in regions involved in the memorization of associations. (10) Impaired associative memory is a hallmark of early stages of Alzheimer disease.

“Resistance Training Promotes Cognitive and Functional Brain Plasticity in Seniors With Probable Mild Cognitive Impairment” Arch Intern Med. 2012;172(8):666-668

Resistance training is a specific component of any strength training routine. Technically put, resistant training is any exercise performed against an opposing force produced by a resistance. This resistance can be made from pushing, squeezing, pulling or bending. http://everything-about-pilates.com/resistance-training/

Saturday, August 15, 2009

U.S. seniors smarter than their congressmen?

That study hasn't been done, but there was one at the U of Michigan that seems to show American seniors are about 10 years better off than British seniors. Maybe it's all that waiting in line for medical care that the over 65s in England have to put up with?

"U.S. seniors performed significantly better than their counterparts in England on standard tests of memory and cognitive function, according to a new study.

The study is the first known international comparison of cognitive function in nationally representative samples of older adults in the United States and England. The report is published in the June 25 peer-reviewed journal BMC Geriatrics."

Full report here.