Health
Alzheimer’s-related dementia could be prevented by experimental drug, researchers say
An experimental drug has shown promise in preventing Alzheimer’s for people at higher risk of developing the disease.
That’s according to a new study from Washington University School of Medicine in St. Louis, where researchers ran a clinical trial of people with rare genetic mutations that almost “guarantee” future Alzheimer’s development, according to a press release.
The study included 73 people in their 30s, 40s and 50s who have the mutation, which causes an overproduction of amyloid in the brain.
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Amyloid, a protein that builds up in the brain and can interfere with cognitive function, is one of the hallmarks of Alzheimer’s.
An experimental drug has shown promise in preventing Alzheimer’s for people at higher risk of developing the disease. (iStock)
All participants had no (or very mild) cognitive decline, had a family history of Alzheimer’s, and were within 15 years before to 10 years after their expected age of developing symptoms, the release stated.
For 22 of the participants who received a drug called gantenerumab for eight years, their risk of developing symptoms was cut in half — from 100% to 50% — the researchers reported.
“What we do know is that it’s possible to at least delay the onset of the symptoms of Alzheimer’s disease and give people more years of healthy life.”
“There was no effect seen in those only treated for two to three years of treatment,” senior author Randall J. Bateman, MD, the Charles F. and Joanne Knight Distinguished Professor of Neurology at WashU Medicine, told Fox News Digital.
The findings were published in the journal The Lancet Neurology on March 19.
For 22 of the participants who received a drug called gantenerumab for eight years, their risk of developing symptoms was cut in half — from 100% to 50% — the researchers reported. (iStock)
Gantenerumab, a monoclonal antibody designed to target and remove amyloid plaques in the brain, was in development by Roche in Switzerland and its U.S. affiliate, Genentech.
Development was stopped in 2023, however, after Roche/Genentech’s own clinical trials found that the drug did not meet their “primary endpoint” for slowing cognitive decline in people with early symptomatic Alzheimer’s disease, according to the release.
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“Everyone in this study was destined to develop Alzheimer’s disease and some of them haven’t yet,” said Bateman in the release.
“We don’t yet know how long they will remain symptom-free – maybe a few years or maybe decades. In order to give them the best opportunity to stay cognitively normal, we have continued treatment with another anti-amyloid antibody in hopes they will never develop symptoms at all,” he went on.
The hope is that if late-onset Alzheimer’s trials have similar results, prevention methods could ultimately be available to the general population, according to the researchers. (iStock)
“What we do know is that it’s possible to at least delay the onset of the symptoms of Alzheimer’s disease and give people more years of healthy life.”
The hope is that if late-onset Alzheimer’s trials have similar results, prevention methods could ultimately be available to the general population, according to Bateman.
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“I am highly optimistic now, as this could be the first clinical evidence of what will become preventions for people at risk of Alzheimer’s disease,” he said. “One day soon, we may be delaying the onset of Alzheimer’s disease for millions.”
Howard Fillit, MD, co-founder and chief science officer at the Alzheimer’s Drug Discovery Foundation in New York, noted that the study shows for the first time that early treatment to clear the plaques before symptoms arise can delay the onset of Alzheimer’s — “similar to how we treat and prevent other chronic diseases.”
Although gantenerumab is no longer being developed, researchers are evaluating other anti-amyloid drugs — such as remternetug, which is made by Eli Lilly — to determine whether they may prevent Alzheimer’s disease. (iStock)
“We’ve entered into a new era of Alzheimer’s research where we can not only modify the course of the disease, but where prevention is possible with therapeutic intervention,” Fillit, who was not involved in the study, told Fox News Digital.
Potential limitations and risks
There were several main limitations to the research, Bateman told Fox News Digital.
The number of people was limited due to the rarity of Alzheimer’s disease caused by mutations, the use of external controls, and the fact that the study started with lower doses, he said.
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“Many of the participants are still cognitively normal and near or past their expected age of onset even after more than eight years of treatment, so the effects could be larger or smaller with continued treatment and follow-up,” Bateman noted.
The researchers noted that anti-amyloid medications like gantenerumab have been shown to cause amyloid-related imaging abnormalities (ARIA).
Amyloid, a protein that builds up in the brain and can interfere with cognitive function, is one of the hallmarks of Alzheimer’s. (iStock)
These appear on brain scans as “tiny spots of blood in the brain or localized swelling of the brain,” the release stated.
The majority of these side effects do not cause symptoms and resolve without treatment, but in rare cases ARIA can cause serious medical issues or can even be fatal.
This most recent study showed that 30% of participants experienced ARIA, likely due to the higher doses of the drug.
Although two participants had to stop using gantenerumab due to severe ARIA, there were no “life-threatening adverse events and no deaths,” the researchers noted.
“Overall, the safety profile of gantenerumab in the extension was similar to that in the original trial and in other clinical trials of gantenerumab,” they stated.
More research needed, experts agree
Dr. Chris Vercammen, a board-certified internal medicine physician who specializes in geriatrics and palliative care, said that while these initial findings are “encouraging,” more research is needed on the effects of these medications.
“Large, randomized trials, including diverse populations and individuals with late-onset Alzheimer’s, are needed to validate these early results and determine the full potential of these treatments,” Vercammen, who is also medical director at Remo Health in California, told Fox News Digital. (He was not involved in the new study.)
“It’s important to note that this study’s design focused on high-risk individuals in the pre-clinical stage, and therefore does not provide sufficient data on the impact of these medications on later-stage Alzheimer’s.”
Fillit added that this new research opens the door for further exploration of treating preclinical Alzheimer’s.
Anti-amyloid medications like gantenerumab have been shown to cause amyloid-related imaging abnormalities (ARIA), which appear on brain scans as “tiny spots of blood in the brain or localized swelling of the brain.” (iStock)
“We look forward to seeing the longitudinal data as well as further studies around this approach,” he told Fox News Digital.
“These efforts bring us one step closer to our ultimate goal of preventing the disease before it begins.”
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Although gantenerumab is no longer being developed, researchers are evaluating other anti-amyloid drugs — such as remternetug, which is made by Eli Lilly — to determine whether they may prevent Alzheimer’s disease.
“These efforts bring us one step closer to our ultimate goal of preventing the disease before it begins.”
“These rare families with mutations may wish to participate in ongoing trials,” Bateman told Fox News Digital.
“The older general population might be interested to know that there are ongoing trials in people with amyloid plaques to test this approach to determine if Alzheimer’s symptoms could be prevented.”
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The study was funded primarily by the Alzheimer’s Association, GHR Foundation and the National Institutes of Health (NIH).
Fox News Digital reached out to Roche/Genentech for comment.
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Washington, DC – GLP-1 weight-loss drugs have become a prevalent part of American healthcare, and the current administration is getting behind the movement.
In an exclusive interview with Fox News Digital at the Great American State Fair in the nation’s capital on July 6, CMS Administrator Dr. Mehmet Oz voiced his support for the use of GLP-1 (glucagon-like peptide-1) medications, such as Ozempic, for appropriate uses.
“I’m a fan of GLP-1 drugs when used correctly,” he said. “They do help people who are overweight lose weight quite effectively. They’re not a replacement for diet and exercise, but they might jumpstart the system so it’s easier for you to use healthier tactics.”
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This is especially helpful for those who may have trouble moving due to joint pain or are experiencing internal dysfunction, Oz said.
Certain GLP-1 drugs are covered by Medicare for overweight candidates with certain conditions, such as high blood pressure and diabetes, and Oz projected the benefits will continue to benefit taxpayers.
Dr. Mehmet Oz is pictured in Washington, D.C., at the Great American State Fair, where he spoke about federal health policy. (Angelica Stabile/Fox News Digital)
“We believe these are so effective in reducing conditions like high blood pressure and diabetes that they’ll actually save money for the federal taxpayer, because [they’re] going to make you healthy enough that you don’t have to consume health services,” Oz said.
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“We think about 70% of all the money we spend on healthcare is caused by chronic conditions, and obesity is the No. 1 driver of all that, so it’s a smart decision.”
Oz recently announced the launch of the Medicare GLP-1 Bridge program, which will allow more seniors to access GLP-1 drugs for only $50 a month if they meet qualifying health criteria and receive prior authorization from a doctor.
The doctor expressed support for broadening affordable access to GLP-1 medications for Americans. (iStock)
“There are a lot of overweight people who don’t have high blood pressure, diabetes or other conditions, so they don’t get access to the drug normally,” he said. “We want them to have the ability to use it as well.”
Although these access shifts could boost Americans’ overall health — and in some cases could be lifesaving — Oz noted that there is “no silver bullet” when it comes to these medications.
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“I love the fact that the innovation that’s coming out of pharmaceutical companies is allowing us to save lives and make lives better,” he said. “But the real secret to longevity is eating right, exercising, sleeping, dealing with the stress of your life, finding some purpose in your existence [and] realizing you have agency over the future.”
“These are things that your mom would have told you [and that] you don’t need a doctor to be emphasizing.”
Medicating appropriately, combined with eating right, exercising and staying connected with others, can help make health goals attainable, the doctor said. (iStock)
While GLP-1s may not be a fix-all, combining these medications with foundational health practices “makes a lot of sense,” Oz said.
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“I don’t want people being fat-shamed … I don’t want you feeling guilty that you’re gaining weight even though everyone else around you seems to have figured it out,” he said. “It’s not that simple — our set points for hunger are different. We have different things going on in our lives.”
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“But if you realize how precious you are — the temple of the soul is so valuable. It’s the greatest gift your parents ever gave you, and you take advantage of every tool out there to make it work … which includes using medications when appropriate. That, to me, is MAHA.”
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Amid warnings of a Legionnaires’ disease outbreak on Manhattan’s Upper East Side, health experts say that early recognition of symptoms can mean the difference between a quick recovery and life-threatening complications, especially for high-risk groups.
New York City health officials are urging anyone who has visited the east side of Central Park or Manhattan’s Upper East Side since late June to watch for symptoms.
As of July 6, the New York City Health Department had confirmed 23 cases and 17 hospitalizations associated with the respiratory infection. No deaths have been reported.
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Officials are investigating contaminated cooling towers as the likely source. They have emphasized that the illness is not spread person-to-person and is not linked to the city’s drinking water.
Health experts say that early recognition of symptoms can mean the difference between a quick recovery and life-threatening complications, especially for high-risk groups. (iStock)
“Legionnaires’ disease is deadly but can be effectively treated if diagnosed early,” said NYC Health Commissioner Dr. Alister Martin in a press release. “New Yorkers at higher risk, including anyone who is 50 and older, those who smoke or people with chronic lung conditions should be especially mindful of their symptoms and seek care as soon as symptoms begin.”
What is Legionnaires’?
Legionnaires’ disease is a type of pneumonia caused by Legionella bacteria.
The bacteria is usually found in lakes, streams and other freshwater environments, but can grow in any area where water sits for a long time, according to the CDC.
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That can include shower heads, sink faucets, hot tubs, water features/fountains, plumbing systems and other water systems.
When people swallow or breathe in droplets of water that contain Legionella, they can potentially become ill.
Although human transmission is possible in rare cases, the disease is not typically transmitted among people, per the Centers for Disease Control and Prevention.
Symptoms of infection
Infections can lead to severe pneumonia in older people and those with compromised immune systems, according to Dr. Andrew Handel, a pediatric infectious diseases expert at Stony Brook Children’s Hospital on Long Island, New York.
Symptoms of Legionnaires’ disease usually show up between two and 14 days after exposure.
New York City health officials are urging anyone who has visited the east side of Central Park or Manhattan’s Upper East Side since late June to watch for symptoms. (iStock)
“Legionella infections cause symptoms that are similar to other forms of pneumonia — fever, coughing, difficulty breathing, shortness of breath and chest pain,” Handel previously told Fox News Digital.
“Legionnaires’ disease is deadly but can be effectively treated if diagnosed early.”
The signs are similar to other types of pneumonia, and include the following:
- Cough
- Fever
- Shortness of breath
- Muscle aches and headaches
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Some patients may also experience nausea, diarrhea and confusion, the CDC noted.
Diagnosis, treatment and prevention
A medical professional can diagnose the infection with laboratory tests and chest X-rays.
The condition is typically treated with antibiotics. In cases of severe infection, hospitalization may be required for breathing support and IV hydration.
Around 10% of people who contract Legionnaires’ disease will die from those complications — and the mortality risk rises to 25% for those who get Legionnaires’ while staying in a healthcare facility, according to the CDC.
The bacteria is usually found in lakes, streams and other freshwater environments, but can grow in any area where water sits for a long time, according to the CDC. (iStock)
“Treatment needs to be early and aggressive,” Dr. Nathan Goodyear, an Arizona-based integrative medicine expert, previously told Fox News Digital. “Legionella infection is an intracellular infection that requires antibiotic treatment.”
Antibiotics that are appropriate for Legionella infection include Levofloxacin and Azithromycin.
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“Therapy can be prescribed orally in healthy individuals… but intravenous antibiotics often prove to be the initial option for treatment secondary to the pathogenicity of the disease,” Goodyear said.
Currently, there are no vaccines for Legionnaires’ disease.
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The best strategy to prevent infection is to reduce the growth and spread of the Legionella bacteria. The CDC recommends that building owners and managers use a water management program to reduce the risk.
“New Yorkers at higher risk, including anyone who is 50 and older, those who smoke or people with chronic lung conditions should be especially mindful of their symptoms and seek care as soon as symptoms begin,” city officials stated. (iStock)
To prevent serious illness from Legionnaires’, Goodyear recommends that all smokers kick the habit, and also emphasizes the need to “aggressively support” chronic pulmonary disease.
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“Increasing immune support (vitamin D3, vitamin C, Zinc) is required to counter the immune dysfunction associated with advancing age.”
Obesity is another foundational risk factor for all chronic inflammatory diseases, the doctor added.
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Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27.
In a post on Substack titled “The Day I’ll Never Remember,” she detailed a sudden episode that left her unable to recall the current month, year and president.
“I thought it was 2024. And I believed Joe Biden was president,” she wrote.
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The event occurred while Couric was attending the Aspen Ideas Festival in Colorado, during which she participated in two public panels — one on AI and one on journalism — both of which she cannot remember at all.
“I have no idea what we talked about, or of what occurred when the panels ended,” she said.
Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27. (Getty Images)
John Molner — Couric’s husband, who was in attendance at the festival and the two panels — also shared his account.
After the event, someone told Molner that Katie wasn’t feeling well. When he reached her, an EMT and a doctor were tending to her. “I could tell something was off,” he wrote. “It could have been altitude sickness, but Katie was definitely not all there.”
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At the hospital, when Couric struggled to recall the year, the president and her grandchildren’s names, doctors began checking for a stroke.
An MRI revealed no signs of stroke, which was a relief, but “Katie’s ‘fog’ became a lot more apparent,” Molner wrote.
John Molner, Couric’s husband, who was in attendance at the festival and the two panels, also shared his account. (Getty Images)
“She repeatedly asked me the same questions: ‘What was I doing before we got to the hospital?’ ‘Why am I at the hospital?’”
Couric was ultimately diagnosed with transient global amnesia, a sudden, temporary episode of memory loss that prevents a person from forming new memories and may also erase some recent memories, according to Mayo Clinic.
“The cause seems to be as mysterious as the brain itself.”
It is not caused by a stroke, seizure or head injury, and it usually resolves completely within 24 hours.
“[It’s] just a very weird neural episode that’s pretty uncommon and, at least in most cases, is a ‘one and done’ experience,” Molner said.
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Couric said she finally began feeling “like herself” again around 9 p.m. and went to sleep at 2 a.m.
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.”
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.” (Getty Images)
Data shows that approximately three to eight people per 100,000 will have an episode of transient global amnesia, with people 50 years of age and older at higher risk.
The specific cause of TGA is not known, but some experts believe it stems from a “temporary dysfunction in the brain’s hippocampus — the area responsible for creating new memories,” Couric shared.
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“Doctors believe this is driven by brief interruptions in blood or oxygen flow, or microscopic spasm in the blood vessels.”
Episodes could potentially be triggered by intense physical exertion, emotional distress, extreme temperature changes or migraines, experts say.
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Approximately 15% of patients will have a recurrence 10 years later.
“Why did this happen to me? Was the altitude an issue? Was I dehydrated? Tired? Stressed? The literature doesn’t seem to indicate that these are contributing factors, but the cause seems to be as mysterious as the brain itself,” Couric wrote.
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise. (iStock)
“All I know is that those hours will be forever lost. Someone described it as my brain failing to hit the ‘record button.’”
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“While this was a freaky occurrence, it could have been much more serious. So ultimately, I’m relieved — even though several hours of a Saturday in June will always be missing for me.”
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise.
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