It happens unexpectedly: a person long thought lost to the ravages of dementia, unable to recall the events of their lives or even recognize those closest to them, will suddenly wake up and exhibit surprisingly normal behavior, only to pass away shortly thereafter. This phenomenon, which experts refer to as terminal or paradoxical lucidity, has been reported since antiquity, yet there have been very few scientific studies of it. That may be about to change.
In an article published in the August issue of Alzheimer’s & Dementia , an interdisciplinary workgroup convened by the National Institutes of Health’s (NIH) National Institute on Aging and led by Michigan Medicine’s George A. Mashour, M.D., Ph.D., outlines what is known and unknown about paradoxical lucidity, considers its potential mechanisms, and details how a thorough scientific analysis could help shed light on the pathophysiology of dementia. Continue reading
Two major studies with promising antibodies have recently failed – possibly because they have been administered too late. A new very early-detection test gives rise to hope.
Using current techniques, Alzheimer’s disease, the most frequent cause of dementia, can only be detected once the typical plaques have formed in the brain. At this point, therapy seems no longer possible. However, the first changes caused by Alzheimer’s take place on the protein level up to 20 years sooner. A two-tier method developed at Ruhr-Universität Bochum (RUB) can help detect the disease at a much earlier stage. The researchers from Bochum published their report in the March 2019 edition of the journal “Alzheimer’s and Dementia: Diagnosis, Assessment and Disease Monitoring”.
“This has paved the way for early-stage therapy approaches, where the as yet inefficient drugs on which we had pinned our hopes may prove effective,” says Professor Klaus Gerwert from the Department of Biophysics at RUB.
Significant reductions in the risk of mild cognitive impairment (MCI)*, and the combination of MCI and dementia**, have been shown for the first time through aggressive lowering of systolic blood pressure in new research results from the federally-funded SPRINT MIND Study reported at the Alzheimer’s Association International Conference (AAIC) in Chicago.
“This is the first randomized clinical trial to demonstrate a reduction in new cases of MCI alone and the combined risk of MCI plus all-cause dementia,” said Jeff D. Williamson, MD, MHS, Professor of Internal Medicine and Epidemiology and Chief, Section on Gerontology and Geriatric Medicine at Wake Forest School of Medicine. Williamson reported these results at AAIC 2018.
The results of this large-scale, long-term clinical trial provide the strongest evidence to date about reducing risk of MCI and dementia through the treatment of high blood pressure, which is one of the leading causes of cardiovascular disease worldwide.
“This study shows more conclusively than ever before that there are things you can do — especially regarding cardiovascular disease risk factors — to reduce your risk of MCI and dementia,” said Maria C. Carrillo, PhD, Alzheimer’s Association Chief Science Officer. “To reduce new cases of MCI and dementia globally we must do everything we can — as professionals and individuals — to reduce blood pressure to the levels indicated in this study, which we know is beneficial to cardiovascular risk.”
Most people have heard or read about calorie restriction being a technique for living longer. This is the first I have heard of it affecting cognition.
Several studies have reported that actively cutting down on calories – not simply “watching your weight” – might also be an effective strategy against cognitive decline, according to the Tufts University Health & Nutrition Letter.
One German study found a connection between a restricted-calorie diet and improved memory among participants divided into three groups: One aimed to reduce calorie intake by 30 percent, mostly by eating smaller portions; a second group kept calories the same while increasing intake of healthy fats by 20 percent; and a third, the control group, made no dietary changes. Continue reading
As regular readers know, I have a history of Alzheimer’s Disease or some form of dementia on both sides of my family, so I entertain a strong interest in the subject, particularly since I am a senior citizen.
A brain disorder that mimics symptoms of Alzheimer’s disease has been defined with recommended diagnostic criteria and guidelines for advancing future research on the condition. Researchers at Rush University Medical Center and scientists from several National Institutes of Health-funded institutions, in collaboration with international peers, described the newly named pathway to dementia, limbic-predominant age-related TDP-43 encephalopathy, or LATE, in a report published today in the journal Brain.
“We proposed a new name to increase recognition and research for this common cause of dementia, the symptoms of which mimic Alzheimer’s dementia but is not caused by plaques and tangles (the buildup of beta amyloid proteins that Alzheimer’s produces). Rather, LATE dementia is caused by deposits of a protein called TDP-43 in the brain,” said Dr. Julie Schneider, senior author of the Brain paper and associate director of the Rush Alzheimer’s Disease Center. Continue reading
Eat less; move more; live longer is the mantra here. Apparently, it also leads to think better, too. The Centers for Disease Control and Prevention (CDC) seems to think so.
Did you know that the health of your brain and your heart are connected? By keeping your heart healthy, you also lower your risk for brain problems such as stroke and dementia. Learn more about the connection between the heart and brain and steps to take to keep both healthy.
Heart disease, stroke, and vascular dementia are preventable. Take steps to reduce your risk.
- Control your blood pressure. High blood pressure is a leading cause of heart disease and stroke. Over time, high blood pressure puts too much stress on blood vessels. Scientists now know that having uncontrolled high blood pressure in midlife also raises your risk for dementia later in life. Know your numbers by getting your blood pressure checked regularly. If your blood pressure is high, work with your doctor, nurse, or health care team to manage it. One way to manage your blood pressure is to take your medicines as prescribed. Learn more ways to manage blood pressure.
- Eat healthy foods and limit alcohol. Eat plenty of vegetables, fruits, whole grains, and low-fat dairy, and include seafood rich in omega-3 fatty acids (such as salmon) each week. Limit foods with added sugars and saturated fats, and lower your sodium (salt) intake. If you drink alcohol, drink in moderation. Drinking too much alcohol raises blood pressure, which can lead to stroke and increase the risk of some kinds of heart disease.
- Get diabetes under control. Diabetes causes high blood sugar, which can damage blood vessels and nerves. This damage raises the risk for heart disease, stroke, and dementia.
- Don’t smoke. Smoking damages blood vessels and makes blood more likely to clot, which can lead to heart disease and stroke. Smoking is the leading cause of preventable death in the United States. If you don’t smoke, don’t start. If you do smoke, learn how to quit.
- Stay active. Lack of physical activity can lead to high blood pressure and obesity. Most Americans don’t meet guidelines of getting at least 150 minutes of moderate-intensity exercise each week. Find ways to get your heart pumping for at least 150 minutes per week. Take the stairs, schedule a walk at lunch, or do jumping jacks during commercial breaks. Learn more about how to get enough physical activity.
In the nearly 10 years of writing this blog I have come to believe that use it or lose it is an unassailable law of the body. And what applies to the body often carries over to the brain. As I have mentioned previously, my family has dementia in general and Alzheimer’s in particular on both sides, so keeping a clear head really resonates with me.
Keeping physically and mentally active in middle age may be tied to a lower risk of developing dementia decades later, according to a study published in the medical journal Neurology. Mental activities included reading, playing instruments, singing in a choir, visiting concerts, gardening, doing needlework or attending religious services.
“These results indicate that these activities in middle age may play a role in preventing dementia in old age and preserving cognitive health,” said study author Jenna Najar, MD, from Sahlgrenska Academy, University of Gothenburg.
“It’s exciting as these are activities that people can incorporate into their lives pretty easily and without a lot of expense.” Continue reading
As I have written here numerous times, both sides of my family have a history of Alzheimer’s Disease, the most common form of dementia. As a guy in his late 70’s this is a critical subject for me. And I am not the only one. I live near Northwestern Memorial Hospital, a major Chicago health establishment. They have a Healthy Transitions program there for folks over 50 which provides programs explaining the changes we are experiencing and can expect to experience. The most popular are the ones dealing with cognitive impairment, Alzheimer’s and dementia. We are all concerned.
That’s why I hope there is a special place in hell for companies who prey on the fears of seniors about their mental health and capacities. I found this item from the U.S. Food and Drug Administration (FDA) most satisfying. Continue reading
As a senior citizen whose family has Alzheimer’s and dementia on both sides I am keenly interested in anything on the subject. Herewith a study published in Nature Medicine.
Athletes know a vigorous workout can release a flood of endorphins: “feel-good” hormones that boost mood. Now there’s evidence that exercise produces another hormone that may improve memory and protect against Alzheimer’s disease, according to a study co-led by Ottavio Arancio, MD, PhD, a researcher at Columbia University’s Vagelos College of Physicians and Surgeons and Taub Institute for Research on Alzheimer’s Disease and the Aging Brain.
Physical activity is known to improve memory, and studies suggest it may also reduce the risk of Alzheimer’s disease. But researchers don’t understand why. Continue reading
As a senior citizen coffee drinker who also has serious concerns about possible cognitive impairment, I was pleased to run across this study by Rutgers scientists.
Rutgers scientists have found a compound in coffee that may team up with caffeine to fight Parkinson’s disease and Lewy body dementia – two progressive and currently incurable diseases associated with brain degeneration.
The discovery, recently published in the Proceedings of the National Academy of Sciences, suggests these two compounds combined may become a therapeutic option to slow brain degeneration.
Mouradian said further research is needed to determine the proper amounts and ratio of EHT and caffeine required for the protective effect in people. NeuroscienceNews.com image is in the public domain.
Lead author M. Maral Mouradian, director of the Rutgers Robert Wood Johnson Medical School Institute for Neurological Therapeutics and William Dow Lovett Professor of Neurology, said prior research has shown that drinking coffee may reduce the risk of developing Parkinson’s disease. While caffeine has traditionally been credited as coffee’s special protective agent, coffee beans contain more than a thousand other compounds that are less well known. Continue reading
Dementia can be a real snake lurking in the brain of seniors who happen to be our loved ones. Is their memory merely slipping with their added years, or do they really have a cognitive impairment? It’s a tough question for many families. As a member of a family with several instances of dementia, I can attest to that.
Quick tests used in primary care settings to identify whether people are likely to have dementia may often be wrong, according to a study published in the November 28, 2018, online issue of Neurology® Clinical Practice, an official journal of the American Academy of Neurology.
The tests, called brief cognitive assessments, evaluate thinking and memory skills. They help doctors decide who may benefit from a full diagnostic assessment for dementia. The three tests examined in this study were the Mini-Mental State Examination, which looks at orientation to time and place and the ability to remember words, the Memory Impairment Screen, which focuses on the ability to remember words, and Animal Naming, which involves naming as many animals as possible in 60 seconds. Continue reading
At the risk of repeating myself I have a strong interest in any form of dementia and especially Alzheimer’s Disease as I have had at least three close family members succumb – and I am a senior citizen. the folowing is from the University of Washington School of Medicine.
Alzheimer’s disease is difficult to diagnose as well as treat, but researchers now have a promising new screening tool using the window to the brain: the eye.
A study of 3,877 randomly selected patients found a significant link between three degenerative eye diseases – age-related macular degeneration, diabetic retinopathy and glaucoma – and Alzheimer’s disease.
The results offer physicians a new way to detect those at higher risk of this disorder, which causes memory loss and other symptoms of cognitive decline. Continue reading
Studying DNA from more than 1.5 million people, an international team of researchers — led by Washington University School of Medicine in St. Louis and the University of California, San Francisco — has identified points of DNA that increase the risk of cardiovascular disease and also heighten the risk for Alzheimer’s disease, according to an article in Neuroscience News.
Scientists have long been aware of connections between variations of the APOE gene, which is involved in cholesterol and lipid metabolism, and Alzheimer’s disease. That gene is known to double the risk for Alzheimer’s disease in some patients and increase risk by up to 12 times in others. But in the new study, the researchers identified other DNA points that also appear to be involved both in cardiovascular disease risk and the risk for Alzheimer’s. Continue reading
We are eating less; moving more and hopefully living longer, but it is imperative that we have a fully functioning brain or our work will be in vain.
A simple and inexpensive word recall test accurately predicted whether people had elevated brain levels of beta-amyloid. Scientists hope this non-invasive stress test that puts pressure on memory–similar to how an exercise stress test checks cardiovascular health–could help identify subtle signs of cognitive impairment that may have previously been missed by standard memory tests.
An NIA-supported team of researchers led by Dr. David Loewenstein of the Center for Cognitive Neurosciences and Aging and the University of Miami Miller School of Medicine developed the Loewenstein-Acevedo Scales for Semantic Interference and Learning (LASSI-L) test. Their preliminary findings were published in the September 4, 2018 issue of Neurology.
British researchers found that people exposed to increased levels of air pollution had 40 percent higher chances of developing dementia.
Air pollution is an established risk factor for heart disease/stroke and respiratory disease, but its potential role in neurodegenerative diseases, such as dementia, isn’t as clear.
The researchers used carefully calculated estimates of air and noise pollution across Greater London to assess potential links with new dementia diagnoses.
They looked at patient data on 131,000 Londoners aged 50 to 79, and based on their residential postcodes, the researchers estimated their yearly exposure to air pollutants. These were specifically nitrogen dioxide, fine particulate matter and ozone, as well as proximity to heavy traffic and road noise, using modelling methods validated with recorded measurements. Continue reading
I feel very strongly about smoking. This is one of those Captain Obvious things to me. It astounds me that anyone who can read will continue to smoke.
The following is excerpted from my Page – How many ways does smoking harm you? Check it out for chapter and verse on the multi-faceted damage that smoking does to your body.
Tobacco use is the single largest cause of preventable cause of death in the United States.
On average people who smoke die about 10 years sooner than non-smokers. The New England Journal of Medicine.
Smoking triples the risk for cataracts and is also a risk factor for macular degeneration and its response to treatment. Dr. Nicholas Volpe, Tarry Professor and Chairman Department of Opthalmology Feinberg School of Medicine Northwestern University
The American Cancer Society estimates that in 2014 about 224,000 new cases of lung cancer and 159,260 cancer deaths caused by tobacco use. The overall survival rate for those with lung cancer, sadly, remains at around 15%. You have less than one chance in six of surviving. Continue reading