Health
‘Reversing’ Alzheimer’s: Here are exercises to make the brain more resilient
Can Alzheimer’s disease be reversed?
Dr. Heather Sandison, a renowned expert in Alzheimer’s disease and related dementia care, believes that reversal isn’t just possible — but that it’s already happening in multiple patients.
In her new book “Reversing Alzheimer’s: The New Tool Kit to Improve Cognition and Protect Brain Health,” which was published by HarperCollins on June 11, Sandison — who is based in California — offers a step-by-step guide to helping Alzheimer’s patients improve their overall brain health.
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One of the core elements of Sandison’s program is a focus on exercise as one of the most important lifestyle factors in preventing and controlling dementia.
Research has shown that physical activity can reduce the likelihood and progression of Alzheimer’s.
Dr. Heather Sandison, at left, is a naturopathic doctor specializing in neurocognitive medicine and the founder of Solcere Health Clinic, San Diego’s premier brain optimization clinic, and Marama, the first residential memory care facility to have the goal of returning cognitively declined residents to independent living. (Dr. Heather Sandison/iStock)
In the excerpt below, Sandison offers some specific recommendations for the types of exercise that can benefit patients living with the disease.
Read an excerpt from ‘Reversing Alzheimer’s’
Dr. Heather Sandison: Need a new motivation to be active? Exercise is medicine for the brain and provides an amazing array of benefits.
Most obviously, exercise increases blood flow throughout the body, including to the brain. That means getting your body moving will deliver more oxygen and nutrients to your brain while also flushing away more waste products.
Exercise also strengthens the heart and cardiovascular system, which helps improve blood flow even when you’re not working out; it also reduces the risk of arterial plaques that might disrupt blood flow to the brain and contribute to dementia.
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The overarching reason that exercise is such a powerful health protector is that it is what’s known as a hormetic, or a beneficial stressor.
Basically, when you put your body through its paces, the body is forced to use up resources, and your tissues can even be broken down a bit. (That’s what happens when you lift weights: Your muscles tear a tiny bit.)
Dr. Heather Sandison, an expert in Alzheimer’s disease and related dementia care, believes that reversal isn’t just possible but that it’s already happening in multiple patients. (Dr. Heather Sandison)
In that sense, you’re introducing stress to your system, but that stress is a force for good, because it triggers your body to get more efficient at using its resources and your tissues to grow back even stronger. In other words, exercise makes your body — including your brain — more resilient.
Exercise benefits several of the root causes of neurological disease.
It improves structure by increasing your cardiovascular capacity and boosting circulation, which delivers oxygen and nutrients to the brain.
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It reduces stress in multiple ways — by giving you an outlet to blow off steam, by producing feel-good hormones such as endorphins and lowering the stress hormone cortisol, and, depending on what kind of exercise you choose, getting you outside and into nature, which is a well-known stress reliever.
It can also be social, and a great way to spend time with friends or even meet new people, which helps address the loneliness and social isolation that The Lancet lists as one of the modifiable risk factors for Alzheimer’s disease.
In her new book “Reversing Alzheimer’s: The New Tool Kit to Improve Cognition and Protect Brain Health,” published by HarperCollins on June 11, Sandison — based in California — offers a step-by-step guide to helping Alzheimer’s patients improve their overall brain health. (HarperCollins)
It improves sleep by tiring you out.
It strengthens immune function, which reduces the risk and effects of infection — all those muscular contractions and moving against gravity improves the flow of lymphatic fluid, which delivers immune cells and flushes away invader cells.
“Exercise benefits several of the root causes of neurological disease.”
It promotes detox, both through increased circulation and through sweating.
It improves signaling, as challenging and strengthening your muscles triggers the release of multiple signaling molecules, known as exerkines, that have demonstrated neuroprotective functions.
“The overarching reason that exercise is such a powerful health protector is that it is what’s known as a hormetic, or a beneficial stressor,” Sandison writes in her new book. (Dr. Heather Sandison)
If you do only one thing: Change up your current exercise routine in a way that challenges your brain and amps up the intensity.
If you are a devoted walker, find a new route that includes hills or stairs. If you’re open to trying something different, check out a new exercise class that you’ve been meaning to try.
Categories of exercise: some familiar, some cutting-edge
There are four types of exercise that you want to prioritize. Four may sound like a lot, but they are not mutually exclusive.
You can combine at least two types of exercise in one session — you can turn strength training into cardio by performing your strength moves in high-intensity intervals, or you can make your cardio dual task by doing something that requires your mental focus while you move.
Aerobic exercise
Aerobic exercise is what we think of as “cardio” — it gets your heart and blood pumping and includes forms of exercise such as walking, jogging, biking, dancing and swimming.
Aerobic exercise strengthens your heart, and what’s good for your heart is also good for your brain, because your heart sends the brain the blood, oxygen, and nutrients that your brain relies on to function.
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Your first goal with adding more exercise to your life is to get 150 to 200 minutes of aerobic exercise each week so that you get your heart rate into the vigorous zone of 70-85% of maximum heart rate.
Listening to your body and adjusting your intensity level based on your perceived exertion is one of the best ways to know if you are pushing yourself hard enough.
Strength training
Strength training — also known as resistance training — is just what it sounds like: using weights or other forms of resistance to build muscle tissue.
Building muscle — particularly in the big muscle groups of the legs, hips, and torso — is directly related to brain health, because these muscles generate brain-derived neurotrophic factor (BDNF), a “fertilizer” for the brain, cueing it to create new neuronal connections and promoting neuroplasticity.
Alzheimer’s patients should aim for at least two strength-training sessions per week, notes the author of a new book. (iStock)
You want to aim for at least two strength-training sessions per week. Strength training doesn’t have to involve your standard barbells and bench pressing your body weight.
You can use resistance bands, light dumbbells, or even the weight of your own body in exercises like squats, lunges and planks.
Even climbing stairs or hills counts as strength training and cardio in one activity, because they get your heart rate up as they also keep the muscles of the legs and hips strong.
Dual-task training
This next-level form of exercise combines physical movement with a cognitive challenge. The simplest form of this is walking and talking.
What is a cognitive challenge will vary from person to person, but if you’re in prevention mode, listening to a foreign language lesson or a nonfiction book while you walk outside or ride the stationary bike, and then pausing the recording to recap what you’ve just learned every few minutes, is a good option.
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For some people, going to a Pilates or yoga class or other class where you really have to pay attention to the teacher’s cues constitutes dual-task training — but not if it’s something you’ve been doing for long enough that you can zone out.
“Exercise is such a powerful health intervention that if we could just bottle it, we could probably get rid of chronic disease.”
And if you have already started experiencing measurable cognitive decline, dual-task training may look like going on a walk while pointing out the names of the plants that you pass along the way, or having someone quiz you on the names of family members, or recalling family stories or important dates.
Wherever you are, you want to be working right on your edge — you can almost feel the wheels of your brain turning in order to stay focused.
Contrast oxygen therapy
This relatively unique form of training alternates the amount of oxygen in the air you breathe as you exercise — an approach that encourages the tiniest blood vessels (known as your microvasculature) throughout your body, including your brain, to open up, resulting in greatly enhanced blood flow.
It’s similar to going to altitude to train and build your aerobic capacity, and it is incredibly valuable for cognitive function.
“Exercise does take time and effort, but making this one activity a regular part of your life addresses so many causal factors of dementia that it can profoundly reduce your risk,” Sandison says in her book. (iStock)
This type of exercise does require specialized gear. You can buy the device, or go find a clinic near you where you can try it out. It does require you to wear a mask that is hooked up to a machine while you exercise, and when the oxygen saturation is low, it can be intense because you have to work harder to bring in enough air.
In other words, contrast oxygen therapy is not for everyone. But if you are willing and able, it can be dramatically helpful.
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Honestly, exercise is such a powerful health intervention that if we could just bottle it, we could probably get rid of chronic disease.
Exercise does take time and effort, but making this one activity a regular part of your life addresses so many causal factors of dementia that it can profoundly reduce your risk.
Excerpted with permission from the new book, “Reversing Alzheimer’s: The New Tool Kit to Improve Cognition and Protect Brain Health” (HarperCollins) by Dr. Heather Sandison, copyright © 2024 by Dr. Heather Sandison. All rights reserved.
Health
Experimental Alzheimer’s drug could reduce alcohol withdrawal damage, researchers say
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An investigational dementia drug may also ease alcohol withdrawal by calming the brain inflammation linked to addiction and relapse.
That’s according to researchers at the University of Kentucky, who studied an experimental medication called MW150 that targets a brain inflammation pathway known as p38α MAPK.
The drug, which has not yet been approved, is designed to treat mild to moderate Alzheimer’s disease.
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Scientists believe neuroinflammation may contribute to relapse risk and long-term neurological damage in people with alcohol use disorder.
In laboratory and animal-model experiments, MW150 was found to reduce certain inflammatory markers during alcohol withdrawal.
An investigational dementia drug may also ease alcohol withdrawal by calming the brain inflammation linked to addiction and relapse. (iStock)
The work, which was published in the journal Alcohol, came from the University of Kentucky’s Sanders-Brown Center on Aging, led by neuroinflammation researcher Linda Van Eldik.
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Caleb Bailey, Ph.D., co-author of the study and a researcher in Van Eldik’s lab, said the study provides “biological plausibility” that MW150 could mitigate neuroinflammation arising from alcohol withdrawal.
Alcohol use disorder is difficult to treat because of high relapse rates, especially during withdrawal, according to Bailey.
Alcohol use disorder is difficult to treat because of high relapse rates, especially during withdrawal, according to the researchers. (iStock)
“If follow-up experiments reveal similar anti-inflammatory effects of MW150 in animal models of alcohol use disorder, it would provide a strong rationale for development of MW150 as a treatment for those struggling with chronic alcohol relapse due to alcohol withdrawal,” he told Fox News Digital.
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Along with a related drug called Neflamapimod, MW150 is already being investigated in clinical trials as a potential therapy for dementia and other neurodegenerative conditions, the researchers noted.
“That gives this work added significance,” Bailey said. “Because these compounds are already further along in development for other neurological diseases, it raises the possibility that they could someday be repurposed more efficiently for alcohol-related conditions if future studies continue to show promise.”
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There were some important caveats to the research, including that it was conducted in cell culture and animal models.
“Because they are ‘dish’-based models, they provide limited information regarding what happens in the full organism – or even the full brain for that matter,” Bailey said.
MW150, along with a related drug called Neflamapimod, is already being investigated in clinical trials as a potential therapy for dementia and other neurodegenerative conditions. (iStock)
“A series of follow-up studies in living animals is required to more fully understand how future MW150 treatment in alcohol use and withdrawal affects systemic health and/or alcohol consumption.”
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Dr. Amy Swift, deputy chief medical officer at Silver Hill Hospital in Connecticut, was not involved in the study but shared her reactions to the findings.
“Although detoxification using tapering doses of medication has long been considered the evidence-based first step in treating alcohol use disorder, its impact on the long-term trajectory of a person’s drinking behavior has been limited,” she told Fox News Digital.
“Minimizing alcohol consumption … is the best strategy for staying healthy.”
“Put simply, detoxification does not treat alcohol use disorder itself; rather, it prevents the potentially fatal complications of alcohol withdrawal.”
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Adding supportive medications — especially those intended to improve overall brain health — could address an important gap in early treatment of detoxification, according to Swift.
“It is worthwhile to investigate whether reducing neuroinflammation could improve a patient’s ability to engage in treatment earlier in recovery and, in turn, meaningfully alter their long-term relationship with alcohol,” an expert said. (iStock)
“Given the profound inflammatory effects alcohol has across multiple organ systems, it is worthwhile to investigate whether reducing neuroinflammation could improve a patient’s ability to engage in treatment earlier in recovery and, in turn, meaningfully alter their long-term relationship with alcohol,” she added.
Bailey emphasized that no amount of alcohol consumption is good from a physical health standpoint.
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“We don’t currently have robust pharmacological treatments to mitigate damage caused by chronic alcohol consumption,” he said. “Minimizing alcohol consumption, therefore, is the best strategy for staying healthy.”
As the MW150 compound continues to be studied for dementia patients, Bailey saud, “information regarding the interaction between these drugs and alcohol — for better or for worse — will be important for patient outcomes.”
Health
One type of sitting may pose greater dementia risk than another, study suggests
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For years, researchers have believed prolonged sitting could raise dementia risk — but new findings suggest the type of sitting may matter more than previously thought.
The research, which was published in the American Journal of Preventive Medicine in March, found that replacing mentally passive sedentary behavior with mentally active sedentary behavior was associated with a significant reduction in dementia risk.
Mentally active sedentary behaviors could include reading, office work and other activities that keep the brain engaged while sitting, while mentally passive behaviors may include watching television or other low-engagement screen activities.
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To gather the findings, Swedish researchers analyzed data from more than 20,000 adults between ages 35 and 64 who were tracked over a 19-year period, between 1997 and 2016, according to a press release.
Participants answered questions about their sitting habits, physical activity and other lifestyle behaviors, while dementia diagnoses were identified using Swedish health and death records.
Researchers emphasized that how people use their brains while sitting may matter more than previously understood. (iStock)
Mentally active sedentary behavior was associated with “a significant reduction in dementia risk” compared to more passive sitting activities.
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Although the study was based in Sweden, the release said the findings “are likely generalizable to a wider global population” and could help “inform public health guidelines and preventive strategies to reduce dementia.”
In a statement, lead researcher Dr. Mats Hallgren of Sweden’s Karolinska Institute said the study highlighted major distinctions between passive and mentally engaging sedentary habits when it comes to brain health.
The research tracked more than 20,000 adults over nearly two decades to examine links between sitting habits and dementia. (iStock)
“While all sitting involves minimal energy expenditure, it may be differentiated by the level of brain activity,” said Hallgren.
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“How we use our brains while we are sitting appears to be a crucial determinant of future cognitive functioning and, as we have shown, may predict dementia onset.”
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Sedentary behavior is a “ubiquitous but modifiable risk factor for many health conditions, including dementia,” according to the researcher.
“Our study adds the observation that not all sedentary behaviors are equivalent; some may increase the risk of dementia, while others may be protective,” he added. “It is important to remain physically active as we age, but also mentally active — especially when we are sitting.”
The findings suggest not all sitting behaviors are equal when it comes to protecting long-term brain health. (iStock)
The CDC projects that by 2060, nearly 14 million American adults will have Alzheimer’s disease.
One recent study published by the Alzheimer’s Association found that a person’s biological age may be tied to dementia risk.
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Researchers also recently found that a higher intake of unprocessed meat may protect against dementia in older people who have a variant of a certain gene.
Health
5 common walking mistakes that could hurt your progress, according to an expert
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Walking is a great way to get the body moving and clear the mind — but if you’re doing it wrong, it may do more harm than good.
That’s according to Dr. Milica McDowell, author of the new book “Walk,” a guide to getting the most out of walking.
The Montana-based doctor of physical therapy, who specializes in lower extremity and orthopedics, shared in an interview with Fox News Digital how powerful walking can be.
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“Walking has incredible health benefits for your wellness today and your longevity tomorrow,” she said. “And it’s something that’s at an all-time low since the pandemic.”
“Walking improves every system in your body – gut, musculoskeletal, mental health, your hormones – and so it has an incredible power to help optimize how you’re doing.”
“Walk,” co-authored by physical therapist Milica McDowell, explores how walking can improve longevity, mobility, mental well-being and overall fitness. (Amelia Anne Photography; Hachette Book Group/Alexander Ryabintsev)
McDowell added that walking is a “phenomenal way” to support a weight-loss journey, as it’s low-impact and low-intensity. It can also boost creativity and reduce stress.
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While the health benefits of walking are evident, McDowell warned of some mistakes that could reverse progress.
No. 1: Walking while scrolling
Escaping our phones can sometimes feel impossible, but if there’s ever a time to be on do-not-disturb, it’s during a walk, according to McDowell.
Walking while scrolling is “really dangerous,” she cautioned, as you’re less aware of your surroundings and more susceptible to accidents.
Walking while scrolling is a danger to public health, the expert says. (iStock)
“You could step in a pothole. You could get hit by a car. You could trip over something. You could bump into someone,” she said. “Walking and scrolling is actually a bit of a public health crisis.”
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Scrolling also puts the neck in a downward position, making the head heavier, which changes your posture “from the top down,” McDowell said. “That can be a problem if you’re someone who struggles with neck pain, back pain or shoulder pain.”
No. 2: Wearing the wrong shoes
McDowell recommends wearing a proper shoe designed specifically for walking to support the feet, promote healthy alignment and protect musculoskeletal health.
The shoe should be “shaped like a foot” so that the toes have room to spread within a wide toe box, she said.
Having space between each toe activates more muscles in the foot and creates a “more healthy walking gait,” according to the expert.
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More than 60% of adults wear the wrong shoe size, according to McDowell, and sizing can vary significantly between brands and manufacturers. She recommends getting measured by a professional to ensure the optimal fit.
No. 3: Not balancing your routine
Walking engages important muscles that support stability and mobility, including the glutes, which help propel the body forward with each step.
But walking shouldn’t be your only form of exercise, experts say. Incorporating strength training and other forms of movement can help prevent overuse injuries, improve balance and build overall fitness.
A well-rounded fitness routine will boost the health benefits of walking, the expert said. (iStock)
“A health stack includes drinking enough water, having healthy nutrition and sleeping adequately — and walking can be added to the other activities,” she said.
Pairing walking with activities like weightlifting, pickleball, dancing or CrossFit can help create a more balanced fitness routine, according to McDowell, and are all part of building a strong “health stack.”
“A health stack includes drinking [enough] water, having healthy nutrition, sleeping adequately — and walking can be added to the other activities,” she said.
No. 4: Not considering walking speed
The speed at which we walk may tell us more about our health than we think.
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Walking speed is the sixth vital sign of health, according to McDowell. These clinical measurements also include blood pressure, heart rate and body temperature.
If your walking speed begins to decline, this could be a marker of underlying health conditions up to seven years before they occur.
A decline in walking speed could be an early warning sign of an underlying health condition. (iStock)
While most people walk at about 90 to 100 steps per minute, translating to about three miles per hour, McDowell suggested increasing your speed to reap “higher level benefits.”
This might mean taking a brisk walk at about 120 to 130 steps per minute, or three and a half to four miles an hour.
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“That can be a place where you get higher level payoff, including more calories burned, if you’re on a weight-loss journey,” she said.
No. 5: Not staying consistent
McDowell emphasized the importance of staying consistent with your walking routine.
A daily walk will have bigger payoffs than only walking once or twice a week. The expert likened walking to basic hygiene, such as brushing your teeth.
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“Everyone is at different places on their walking journey,” she said. “Don’t set the 10,000 steps per day benchmark. That is a marketing myth … Go ahead and find a step count that works well for you, maybe between 5,500 and 7,500.”
Efficiency is everything
McDowell summed up that each walk should be efficient.
“If you are an efficient walker, you are graceful, you are not wasting energy, you are walking balanced no matter your height, your weight or your age,” she said.
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As the wellness movement has emphasized the importance of just moving, McDowell commented that walking is a “pinnacle activity” in this push.
“People are recognizing that these softer, more consistent activities can provide a lot of benefit for our physical and mental health,” she said.
McDowell encourages walking with a friend for added social benefit. (iStock)
“You don’t have to go and crush yourself in the gym. You don’t have to be dripping sweat … It’s something you can do for periods of time throughout the day, little ‘snacks’ that all add up, or you can take longer walks depending on what time is available to you.”
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Walking can also be a positive social experience done with friends and loved ones, McDowell noted. This is particularly important for seniors who can benefit from the combined physical activity and social interaction.
“Walking with an older adult can help combat loneliness,” she said. “It can also help improve balance and reaction time, and reduce fall risk.”
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