Health
Alzheimer’s on mother’s side of the family could increase disease risk, study finds
Having a mother with Alzheimer’s could lead to a higher risk of inherited disease than a paternal history.
That’s according to a recent study from Mass General Brigham. Researchers analyzed 4,400 adults between ages 65 and 85 who did not have any signs of cognitive decline, but did have amyloid show up in brain-imaging scans.
The people with the higher amounts of amyloid were more likely to have mothers with symptoms of Alzheimer’s — primarily memory loss, the researchers found.
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Amyloid, a protein that builds up in the brain and forms plaques that affect cognitive function, is one of the hallmarks of Alzheimer’s disease (AD).
The findings were published in JAMA Neurology in June.
Having a mother with Alzheimer’s could lead to a higher risk of inherited disease than a paternal history, a new study has found. (iStock)
“Our study showed a striking asymmetry in the impact of maternal versus paternal history of dementia on the risk of offsprings’ brain amyloid-beta protein accumulation, with maternal history having a greater impact,” senior corresponding author Hyun-Sik Yang, M.D., a neurologist at Mass General Brigham, told Fox News Digital via email.
“In our study, maternal history of dementia increased their children’s risk of having preclinical AD, while paternal history had less impact.”
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The researchers — a collaborative team from Mass General Brigham, Vanderbilt and Stanford — expected to see similar genetic risks to be passed down by mothers and fathers, Yang noted.
“Our results suggest otherwise, raising intriguing questions about AD genetics and how AD risk is inherited,” he said.
“In our study, maternal history of dementia increased their children’s risk of having preclinical AD, while paternal history had less impact,” a researcher said. (iStock)
The participants in the study had what is referred to as “preclinical Alzheimer’s disease,” Yang noted, which occurs when there is amyloid buildup but no symptoms.
“This stage might represent a unique opportunity to treat AD before it irreversibly destroys the brain,” he said.
The researchers also found a correlation between amyloid buildup and a history of Alzheimer’s on both sides of the family, as well as fathers with early-onset dementia.
“It’s interesting from a genetic perspective to see one sex contributing something the other sex isn’t.”
“If your father had early onset symptoms, that is associated with elevated levels in the offspring,” said Mabel Seto, PhD, first author and a postdoctoral research fellow in the Department of Neurology at the Brigham, in a press release.
“However, it doesn’t matter when your mother started developing symptoms — if she did at all, it’s associated with elevated amyloid.”
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Women are nearly twice as likely to develop Alzheimer’s than men, according to data from the Alzheimer’s Society.
“It’s really interesting from a genetic perspective to see one sex contributing something the other sex isn’t,” Seto said.
Limitations of the study
Courtney Kloske, PhD, director of scientific engagement at the Alzheimer’s Association in Chicago, Illinois, was not involved in the study but shared her insights on the findings.
“This study sheds light on the interplay between genetics and cognition in individuals with a family history of cognitive decline,” Kloske told Fox News Digital in an email.
A protein called amyloid that builds up in the brain and forms plaques — affecting cognitive function — is one of the hallmarks of Alzheimer’s disease. (iStock)
The expert did point out some limitations in the study, which the researchers also acknowledged.
“The authors mention that their findings should be interpreted cautiously,” she said.
One key limitation was that the study participants self-reported their family history, which could introduce some degree of bias or inaccuracy.
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“Additionally, the generally longer lifespan of women compared to men may contribute to the higher observed prevalence of cognitive impairment among women,” Kloske added.
Yang also spoke to this limitation, adding that the study participants were older adults and that the average life expectancy was shorter in their parents’ generation, especially for males.
While having elevated amyloid levels significantly increases the risk of someone eventually having dementia, more research is needed to determine the full impact of family history on the course of Alzheimer’s disease. (AP Newsroom)
“That might have made it even more challenging to assess the actual risk of dementia in their fathers, as they might have passed away before getting to the age when dementia becomes more prevalent,” he said.
Another consideration, according to Kloske, is that the parents in the current study lived in a “different, earlier era” when women were less likely to be in the workforce and had lower levels of education.
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“These trends limit the generalizability of these results,” she said.
Yang also reiterated that none of the study participants had dementia — “we asked about their family history and matched them with the amyloid PET scan results.”
While having elevated amyloid levels significantly increases the risk of someone eventually having dementia, Yang noted, more research is needed to determine the full impact of family history on the course of Alzheimer’s disease.
Women are nearly twice as likely to develop Alzheimer’s than men, according to data from the Alzheimer’s Society. (iStock)
“We think it is important for doctors evaluating dementia patients to gather detailed family history information, including the history of both parents and their age at onset if there was a memory loss or dementia history,” he said.
It is also important to seek out ways to decrease the risk, especially if someone has a family history, according to the researcher.
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“Lifestyle and environmental factors are thought to play a significant role in dementia risk,” Yang said.
“I always tell my patients to focus on a healthy lifestyle, such as a heart-healthy diet, regular physical activity, and a socially and intellectually active lifestyle.”
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In a dramatic turn of events that’s captured the attention of animal lovers worldwide, Punch — the young macaque at a zoo in Japan famous for his inseparable bond with a stuffed orangutan toy — has reached a major milestone in his journey toward social integration.
On Thursday, visitors and staff at the Ichikawa Zoological and Botanical Garden witnessed a breakthrough: Punch was seen cuddling with and hitching a ride on the back of a fellow macaque.
Punch’s story began with hardship. He was abandoned by his mother shortly after his birth in July 2025 — and to ensure his survival, zookeepers stepped in to hand-rear the primate.
On Jan. 19, 2026, the zoo officially began the process of reintegrating Punch into the “monkey mountain” enclosure.
The transition was initially fraught with tension.
Punch’s story began with hardship when he was abandoned by his mother shortly after he was born. To help him, zookeepers gave him a stuffed toy that he began dragging around everywhere he went. (David Mareuil/Anadolu via Getty Images)
As a hand-reared infant, Punch was bullied and ignored by the established group of monkeys.
He was often seen huddled alone with his orange plush companion while the rest of the troop interacted.
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In an official statement released Feb. 27, the Ichikawa Zoological and Botanical Garden detailed the meticulous care behind this process.
Previous viral videos showed Punch bullied by the rest of the troop, running to his plushy toy for comfort. (David Mareuil/Anadolu via Getty Images)
“From an animal welfare perspective, our primary goal is to reintegrate Punch with the troop,” the zoo said.
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The strategy involved nursing Punch within the enclosure, so the troop could recognize him as one of their own, and pairing him with a gentle young female macaque prior to his full release to build his confidence.
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The latest footage, captured by X user @tate_gf, suggested the zoo’s patience is paying off.
The video shows Punch seeking physical contact not from his toy, but from another monkey — eventually climbing onto its back for a vital social behavior for young macaques: the “piggyback ride.”
The zoo’s strategy appears to be paying off: Punch, shown at far left, was recently seen riding on the back of a fellow macaque. (David Mareuil/Anadolu via Getty Images)
While Punch still carries his stuffed toy for comfort during moments of perceived danger, the zoo remains optimistic about his progress.
The organization cited the successful 2009 case of Otome, another hand-reared macaque who eventually outgrew her stuffed toy, successfully integrated — and went on to raise four offspring of her own.
The zoo has had crowds coming to see Punch, with hundreds of people lining up to get inside to see the young star, according to reports.
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“I’m hoping Punch has a good life like everybody else does, and think he’s a cute little guy,” one person commented online.
“Such a precious baby,” another person wrote.
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This story discusses suicide. If you or someone you know is having thoughts of suicide, please contact the Suicide & Crisis Lifeline at 988 or 1-800-273-TALK (8255).
Artificial intelligence has been touted as a boon to healthcare, but a new study has revealed its potential shortcomings when it comes to giving medical advice.
In January, OpenAI launched ChatGPT Health, the medical-focused version of the popular chatbot tool.
The company introduced the tool as “a dedicated experience that securely brings your health information and ChatGPT’s intelligence together, to help you feel more informed, prepared and confident navigating your health.”
But researchers at the Icahn School of Medicine at Mount Sinai have found that the tool failed to recommend emergency care for a “significant number” of serious medical cases.
The study, published in the journal Nature Medicine on Feb. 23, aimed to explore how ChatGPT Health — which is reported to have about 40 million users daily — handles situations where people are asking whether to seek emergency care.
Artificial intelligence has been touted as a boon to healthcare, but a new study has revealed its potential shortcomings when it comes to giving medical advice. (iStock)
“Right now, no independent body evaluates these products before they reach the public,” lead author Ashwin Ramaswamy, M.D., instructor of urology at the Icahn School of Medicine at Mount Sinai in New York City, told Fox News Digital.
“We wouldn’t accept that for a medication or a medical device, and we shouldn’t accept it for a product that tens of millions of people are using to make health decisions.”
Emergency scenarios
The team created 60 clinical scenarios across 21 medical specialties, ranging from minor conditions to true medical emergencies.
Three independent physicians then assigned an appropriate level of urgency for each case, based on published clinical practice guidelines in 56 medical societies.
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The researchers conducted 960 interactions with ChatGPT Health to see how the tool responded, taking into account gender, race, barriers to care and “social dynamics.”
While “clear-cut emergencies” — such as stroke or severe allergy — were generally handled well, the researchers found that the tool “under-triaged” many urgent medical issues.
The team created 60 clinical scenarios across 21 medical specialties, ranging from minor conditions to true medical emergencies. (iStock)
For example, in one asthma scenario, the system acknowledged that the patient was showing early signs of respiratory failure — but still recommended waiting instead of seeking emergency care.
“ChatGPT Health performs well in medium-severity cases, but fails at both ends of the spectrum — the cases where getting it right matters most,” Ramaswamy told Fox News Digital. “It under-triaged over half of genuine emergencies and over-triaged roughly two-thirds of mild cases that clinical guidelines say should be managed at home.”
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Under-triage can be life-threatening, the doctor noted, while over-triage can overwhelm emergency departments and delay care for those in real need.
Researchers also identified inconsistencies in suicide risk alerts. In some cases, it directed users to the 988 Suicide and Crisis Lifeline in lower-risk scenarios, and in others, it failed to offer that recommendation even when a person discussed suicidal ideations.
“ChatGPT Health performs well in medium-severity cases, but fails at both ends of the spectrum.”
“The suicide guardrail failure was the most alarming,” study co-author Girish N. Nadkarni, M.D., chief AI officer of the Mount Sinai Health System, told Fox News Digital.
ChatGPT Health is designed to show a crisis intervention banner when someone describes thoughts of self-harm, the researcher noted.
OpenAI launched ChatGPT Health, the medical-focused version of the popular chatbot tool, in January 2026. (Gabby Jones/Bloomberg via Getty Images)
“We tested it with a 27-year-old patient who said he’d been thinking about taking a lot of pills,” Nadkarni said. “When he described his symptoms alone, the banner appeared 100% of the time. Then we added normal lab results — same patient, same words, same severity — and the banner vanished.”
“A safety feature that works perfectly in one context and completely fails in a nearly identical context … is a fundamental safety problem.”
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The researchers were also surprised by the social influence aspect.
“When a family member in the scenario said ‘it’s nothing serious’ — which happens all the time in real life — the system became nearly 12 times more likely to downplay the patient’s symptoms,” Nadkarni said. “Everyone has a spouse or parent who tells them they’re overreacting. The AI shouldn’t be agreeing with them during a potential emergency.”
Fox News Digital reached out to Open AI, creator of ChatGPT, requesting comment.
Physicians react
Dr. Marc Siegel, Fox News senior medical analyst, called the new study “important.”
“It underlines the principle that while large language models can triage clear-cut emergencies, they have much more trouble with nuanced situations,” Siegel, who was not involved in the study, told Fox News Digital.
ChatGPT and other LLMs can be helpful tools, a doctor said, but they “should not be used to give medical direction.” (iStock)
“This is where doctors and clinical judgment come in — knowing the nuances of a patient’s history and how they report symptoms and their approach to health.”
ChatGPT and other LLMs can be helpful tools, Siegel said, but they “should not be used to give medical direction.”
“Machine learning and continued input of data can help, but will never compensate for the essential problem – human judgment is needed to decide whether something is a true emergency or not.”
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Dr. Harvey Castro, an emergency physician and AI expert in Texas, echoed the importance of the study, calling it “exactly the kind of independent safety evaluation we need.”
“Innovation moves fast. Oversight has to move just as fast,” Castro, who also did not work on the study, told Fox News Digital. “In healthcare, the most dangerous mistakes happen at the extremes, when something looks mild but is actually catastrophic. That’s where clinical judgment matters most, and where AI must be stress-tested.”
Study limitations
The researchers acknowledged some potential limitations in the study design.
“We used physician-written clinical scenarios rather than real patient conversations, and we tested at a single point in time — these systems update frequently, so performance may change,” Ramaswamy told Fox News Digital.
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Additionally, most of the missed emergencies happened in situations where the danger depended on how the condition was changing over time. It’s not clear whether the same problem would happen with acute medical emergencies.
Because the system had to choose just one fixed urgency category, the test may not reflect the more nuanced advice it might give in a back-and-forth conversation, the researchers noted.
ChatGPT Health is designed to show a crisis intervention banner when someone describes thoughts of self-harm. (iStock)
Also, the study wasn’t large enough to confidently detect small differences in how recommendations might vary by race or gender.
“We need continuous auditing, not one-time studies,” Castro noted. “These systems update frequently, so evaluation must be ongoing.”
‘Don’t wait’
The researchers emphasized the importance of seeking immediate care for serious issues.
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“If something feels seriously wrong — chest pain, difficulty breathing, a severe allergic reaction, thoughts of self-harm — go to the emergency department or call 988,” Ramaswamy advised. “Don’t wait for an AI to tell you it’s OK.”
The researchers noted that they support the use of AI to improve healthcare access, and that they didn’t conduct the study to “tear down the technology.”
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“These tools can be genuinely useful for the right things — understanding a diagnosis you’ve already received, looking up what your medications do and their side effects, or getting answers to questions that didn’t get fully addressed in a short doctor’s visit,” Ramaswamy said.
“That’s a very different use case from deciding whether you need emergency care. Treat them as a complement to your doctor, not a replacement.”
“This study doesn’t mean we abandon AI in healthcare.”
Castro agreed that the benefits of AI health tools should be weighed against the risks.
“AI health tools can increase access, reduce unnecessary visits and empower patients with information,” he said. “They are not inherently unsafe, but they are not yet substitutes for clinical judgment.”
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“This study doesn’t mean we abandon AI in healthcare,” he went on. “It means we mature it. Independent testing and stronger guardrails will determine whether AI becomes a safety net or a liability.”
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