Health
He carries the Alzheimer’s gene but never got the disease — scientists want to know why
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A Washington man appeared to be destined to develop Alzheimer’s disease — but against all genetic odds, he has eluded the common dementia for decades.
Researchers at the Washington University School of Medicine in St. Louis recently published a study focusing on Doug Whitney, 76, who lives near Seattle.
He has a rare inherited genetic mutation in the presenilin 2 (PSEN2) gene, which virtually guarantees early-onset Alzheimer’s.
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All of Whitney’s family members who inherited the gene have experienced cognitive decline starting in their early 50s or sooner, according to a WashU press release.
Whitney, however, shows no signs of mental decline. WashU researchers wondered if the reason for his continued cognitive health could help protect others against the disease.
Doug Whitney, Alzheimer’s research participant, appeared to be destined to develop Alzheimer’s disease — but against all genetic odds, he has eluded the common dementia for decades. (UWash Medicine/Megan Farmer)
In a study published in the journal Nature Medicine, the researchers analyzed his genetic data and brain scans, identifying “changes in genes and proteins” that could explain how he has defied the odds to remain mentally sharp.
The researchers also discovered that Whitney’s brain had virtually no buildup of tau, the hallmark protein that signals the onset of cognitive decline.
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“These extensive studies indicate a remarkable resistance to tau pathology and neurodegeneration,” said senior study author Randall J. Bateman, M.D., the Charles F. and Joanne Knight Distinguished Professor of Neurology at WashU Medicine, in the press release.
Urged by his cousin, Whitney first came to WashU in 2011 to participate in a study focused on families with inherited forms of Alzheimer’s, as many of his relatives had developed early-onset disease. At the time, he believed he did not have the gene.
“He actually was able to escape the expected course of the disease.”
Whitney’s mother was one of 14 children, nine of whom had the Alzheimer’s gene. Ten of them died before they were 60. Whitney’s own brother developed the disease before dying at age 55.
“I was 61 at the time — well past the age where it should have onset,” he told Fox News Digital during an on-camera interview. “But they tested me, and lo and behold, I did have the gene. I was amazed.”
In a study published in the journal Nature Medicine, the researchers analyzed Whitney’s genetic data and brain scans. (UWash Medicine/Megan Farmer)
The researchers were just as “confounded,” Whitney recalled.
“They tested me three times to make sure that there wasn’t some slip-up. But it’s true. I had the gene. And now I’m 76 years old and still haven’t had any symptoms.”
Cognitive clues
Jorge Llibre-Guerra, M.D., an assistant professor of neurology and co-first author of the study, echoed that it was a “big surprise” to learn that Whitney was a carrier of the genetic mutation — officially known as an “exceptional resilience mutation carrier.”
“He actually was able to escape the expected course of the disease,” he said in the release.
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Now, in this most recent study, the WashU researchers aimed to explore potential reasons for Whitney’s absence of Alzheimer’s.
“If we are able to uncover the mechanism behind this resilience, we could try to replicate it with a targeted therapy designed to delay or prevent the onset of Alzheimer’s, leveraging the same protective factors that have kept Mr. Whitney from developing this disease to benefit others,” said Llibre-Guerra.
Doug and Ione Whitney often work on puzzles together to help maintain mental sharpness. (UWash Medicine/Megan Farmer)
Those who have the PSEN2 mutation tend to have an “over-production” of amyloid protein, which builds up in the brain during the first stage of Alzheimer’s, according to the researchers.
In the second stage, as symptoms of cognitive decline begin, there is typically a buildup of tau protein in the brain.
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In Whitney’s case, brain scans showed a “significant accumulation” of amyloid, but almost a complete absence of tau.
One theory for how Whitney may have escaped his genetic fate stems from his time in the Navy.
The researchers discovered that Whitney’s brain (not pictured) had virtually no buildup of tau, the hallmark protein that signals the onset of cognitive decline. (AP Photo/Evan Vucci, File)
When the researchers analyzed Whitney’s cerebrospinal fluid, they found a “a significantly higher-than-normal level” of “heat shock” proteins, protective molecules that cells produce when they’re under stress, including high heat exposure.
During his many years of working as a shipboard mechanic in the Navy, Whitney was exposed to high temperatures for extended periods of time.
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“In the engine room of ships, the temperatures … would range from 100 to 110 degrees, for four hours at a time,” he told Fox News Digital. “They concluded that possibly there was some gene or protein that could mutate and protect me genetically from the disease.”
“We don’t yet understand how or if heat shock proteins may be mediating the effect,” Llibre-Guerra noted in the release. “However, in this case, they may be involved in preventing aggregation and misfolding of tau proteins, but we do not know for sure.”
“They tested me three times to make sure that there wasn’t some slip-up. But it’s true. I had the gene. And now I’m 76 years old and still haven’t had any symptoms,” Whitney said. (REUTERS/Brian Snyder/File photo)
The research was supported in part by the Dominantly Inherited Alzheimer Network, the National Institute on Aging and the Alzheimer’s Association, among others.
‘It’s my calling’
To help him stay sharp, Whitney often does crossword puzzles and sudoko along with his wife.
“I think I’m pretty healthy at 76,” he said. “I’m pretty active, and I hardly have any medications to take.”
For those who are experiencing symptoms, Whitney recommends contacting the Alzheimer’s Association.
“Get into research as soon as possible — the earlier you get in, the better chance you have,” he said. “Don’t give up. Nobody’s alone out there anymore. There are lots of people waiting to help you.”
“Looking at the advances they’ve made over the last 14 years — it’s amazing,” Whitney said. “It’s imperative that we keep going.” (iStock)
Whitney said he is optimistic about the future of Alzheimer’s treatment.
“Looking at the advances they’ve made over the last 14 years — it’s amazing,” he said. “It’s imperative that we keep going.”
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Llibre-Guerra said he’s hopeful that the insights gleaned from Whitney’s case will spark broader studies — in both people and animals — aimed at uncovering the biological secrets behind his resistance to Alzheimer’s.
“As long as they need me, I’ll be here. I’m in it for the long haul.”
“We have made all of the data we have available, as well as the tissue samples,” he said. “If researchers want to request those to do additional analysis, that’s something we would welcome.”
Whitney said he is committed to helping advance Alzheimer’s research, which his wife refers to as his “third career.”
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“It’s become my calling,” he said. “When we go for testing, it’s a pretty rigorous day, but after 14 years, I’m used to it now, so that’s not a concern.”
“As long as they need me, I’ll be here. I’m in it for the long haul.”
Fox News Digital reached out to the researchers for comment.
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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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Older adults identified as “super movers” are about half as likely to develop cognitive impairment than their peers.
That’s according to a recent study led by Stony Brook Medicine in New York, which evaluated the cognitive function of 4,000 adults 80 and over who participated in multiple aging and longevity studies over several years.
Among this group, 6% to 10% were classified as super movers, which means they walk at a much faster pace than others of the same age and gender — at speeds comparable to people three decades younger.
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The super movers were found to have about half the risk of cognitive decline compared to seniors with typical gait speed.
The findings were published in the journal Neurology on June 16.
Older adults identified as “super movers” are about half as likely to develop cognitive impairment than their peers. (iStock)
“The study reinforces that mobility and brain health are closely connected,” lead study author Dr. Joe Verghese, MD, neurologist at Stony Brook Medicine, told Fox News Digital. “This suggests that preserving mobility may be an important marker of healthy brain aging and resilience.”
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The most intriguing finding, according to Verghese, was that super movers maintained cognitive function despite having similar dementia-related brain changes as their peers.
In postmortem brain analysis, there was no difference in dementia-related pathologies between the super movers and the slower walkers, the study stated.
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“This suggests they may possess resilience mechanisms that help preserve brain function even in the presence of age-related changes,” he said. “Understanding these resilience factors could lead to new strategies for promoting healthy brain aging.”
As the study was observational, there were some limitations, and it does not prove that walking faster prevents dementia, the researchers noted.
Super movers were found to have about half the risk of cognitive decline compared to seniors with typical gait speed. (iStock)
“Other factors, such as cardiovascular health, physical fitness or genetics, may also contribute to both faster walking and better cognitive outcomes,” Verghese said.
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This study adds to growing evidence that what’s good for the heart and muscles also benefits the brain, he noted, adding that “staying physically active remains one of the most effective, evidence-based ways to support healthy aging.”
“Walking speed is best viewed as a marker of overall health, not a treatment.”
“The broader message is that physical activity is important at any age,” Verghese said. “Walking is an easy step-up point because you don’t need any special equipment. You can do it inside or outdoors, and you can do it on a regular basis. You can walk with a dog, you can walk with a friend.”
Any activity is beneficial if it’s done regularly and with the right intensity, he added.
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Rather than just trying to walk faster, the neurologist recommends that seniors focus on maintaining mobility through regular physical activity, strength training, balance exercises and good cardiovascular health.
“Walking speed is best viewed as a marker of overall health, not a treatment,” Verghese noted.
Major public health guidelines from the CDC and U.S. Physical Activity Guidelines recommend at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking.
Major public health guidelines from the CDC and U.S. Physical Activity Guidelines recommend at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking. (iStock)
This can be achieved by walking 30 minutes a day, five days a week, or about 20 to 25 minutes most days. Another option is to engage in shorter sessions that add up over the day.
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“You have to do it within your health limitations and medical conditions,” Verghese advised. “So if there are any medical concerns, I would get your physician to clear you before starting exercise.” The good thing about walking, he added, is that you can start at a slow pace and then gradually build up to a brisker pace.
“And then adding on strength and balance training, whatever age you are, I think is also important.”
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