Experiencing daytime sleepiness is something that is usually perceived as a minor inconvenience, but for older adults, it could be an early warning sign of Dementia. This neurodegenerative disease leads to the progressive decline of brain cells. This eventually

affects memory, cognition, and personality, making everyday tasks more difficult. As one of the fastest-growing neurological disorders across the world, dementia poses a significant health threat to ageing populations.

Is Dementia Linked To Poor Sleep?

For this study, researchers followed 445 older adults (average age 76) over three years, aiming to determine whether poor sleep could increase the risk of mild cognitive impairment (MCI), which often leads to dementia. At the start, none of the participants had MCI, but by the end of the study, 36 individuals had developed the condition.

The researchers discovered that participants with poor sleep were more likely to develop MCI compared to those who slept well. However, when depression symptoms were taken into account, the link between poor sleep and MCI became less pronounced, suggesting that while sleep issues are a concern, mental health also plays a key role in dementia risk.

To assess sleep quality, the Pittsburgh Sleep Quality Index (PSQI) was used, evaluating factors such as sleep duration, disturbances, and daytime alertness. Among these, "daytime dysfunction"—defined as excessive sleepiness and low energy during the day—was most strongly associated with an increased risk of MCI. Those experiencing daytime dysfunction were more than three times as likely to develop MCI as those who didn’t report such symptoms.

There are many types of dementia:

Dementia is not a specific disease. According to the Centers for Disease Control and Prevention (CDC), it is an overall term that describes a decline in mental ability that interferes with daily life. People with dementia often have symptoms like trouble remembering, thinking, or making everyday decisions. These symptoms tend to get worse over time.

Alzheimer’s disease is the most common type of dementia, and it mostly affects the elderly. Each form of dementia has a different cause. Though dementia mostly affects older adults, it is not a part of normal ageing. An estimated 6.7 million older adults have Alzheimer's disease in the United States. That number is expected to double by 2060, as per data from the CDC.

In 2022, 3.8% of men and 4.2% women in US were diagnosed with dementia. The percentage of people increase with age from 1.7% for those aged 65-74 to 13.1% for those aged 85 and older. Alzheimer's accounts for 60 to 80% of all dementia cases and it is most prevalent in California, Florida, and Texas, as these states have the highest number of people.

Pennsylvania has reported the first two measles-related deaths of 2026 in the US, both involving unvaccinated individuals. One was reportedly an infant, while details about the second person have not been released.

While the cause of the infant’s death is disputed, Lancaster County Coroner confirmed that measles antibodies were found in postmortem testing, raising significant concerns

According to the Pennsylvania Department of Health (DOH), the deaths mark the first measles-related deaths in the state in 35 years.

Pennsylvania Reports 424 Measles Cases

Pennsylvania is among the hardest-hit states in the US outbreak, with 424 cases reported across 28 counties, including 94 in the past week. At least 73 people have been hospitalized with measles complications.

Lancaster County has reported 197 confirmed cases. The county also has a low MMR vaccination rate, with coverage falling from 95.5% in 2017 to 87.6% last year. Local physicians and health officials say the actual case count is likely higher.

Infants Face Higher Risk

The first MMR dose is recommended at 12 to 15 months, followed by a second dose at 4 to 6 years.

“The real vulnerability is in infants between 6 and 11 months of age, as maternal antibody is waning and they haven’t gotten their first dose of the MMR vaccine,” said Dr. Peter Hotez, dean of the National School of Tropical Medicine at Baylor College of Medicine in Dallas.

In areas with high measles exposure, health authorities may recommend an early MMR dose from 6 months of age. This was done during last year’s Texas outbreak, when two unvaccinated girls died of measles.

Questions Over the Reported Deaths

Gov. Josh Shapiro and Health Secretary Debra Bogen announced the two deaths at a Tuesday press conference in Lancaster County and urged people to get vaccinated.

“We hope and we pray that those deaths will be the last,” Shapiro said. “This illness and death from measles is completely preventable.”

The state initially withheld details, citing privacy concerns. The lack of information prompted questions from local officials and lawmakers.

Republican Sen. Scott Martin said the announcement had not been independently verified. Republican Rep. Dave Zimmerman called for more information, while county commissioner Josh Parsons said the local coroner could not confirm any measles deaths.

Coroner Says Infant Did Not Die From Measles

The state confirmed information about the infant’s death on Wednesday after Lancaster County Coroner Stephen Diamantoni said his office was investigating a newborn who tested positive for measles and died from a ruptured spleen.

Diamantoni said the newborn died shortly after birth from a laceration of the spleen, not measles, although measles antibodies were found in postmortem testing.

“The newborn had measles” but did not “die of measles,” Parsons said, citing the coroner.

No details have been released about the second person whose death was announced by the state.

Shapiro, Kennedy Clash Over Vaccination Rates

Shapiro blamed Health Secretary Robert F. Kennedy Jr.’s policies and rhetoric for contributing to outbreaks.

Kennedy rejected the claim, saying Pennsylvania’s vaccination decline began before his tenure and arguing that distrust created during the Covid-19 pandemic had weakened confidence in vaccines.

US Reports 2,777 Measles Cases

The US has confirmed 2,777 measles cases this year, the highest number in 35 years.

Measles has been considered eliminated in the US since 2000 because it has not continuously spread for a year. The Pan American Health Organization is expected to decide in November whether the US has lost its elimination status.

Doctors in London have performed the world’s first brain tumour surgery assisted by artificial intelligence. AI analysed the operation live, helping surgeons assess critical structures and protect the patient’s vision.

The procedure was carried out in May at the National Hospital for Neurology and Neurosurgery, part of University College London Hospitals (UCLH). The first patient, 48-year-old Rhys Hibbert, had an 11-mm tumour on his pituitary gland that had begun affecting his vision.

Hibbert’s vision had deteriorated to the point that he was using walking sticks. After surgery, he said he could see clearly when he woke up and was walking independently without glasses or sticks within a week.

How AI Helped During The Operation?

To answer the biggest question, the AI did not perform the surgery. The neurosurgeon was in complete control the whole time. The technology, instead, analysed live video from the surgical camera in real time. It identified and highlighted important structures in the brain, including blood vessels and nerves related to vision.

The pituitary gland is roughly the size of a marble, but it is located in a crowded and packed region at the base of the brain. It is surrounded by the optic nerves and major blood vessels. A tumour in this area can therefore cause vision problems by pressing against the nerves.

It's extremely delicate work as the pituitary gland, optic nerves and blood vessels are packed into an extremely small area. According to UCLH, being just a millimetre off target can potentially result in blindness, stroke or death.

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In Hibbert's case, the tumour had been discovered after he collapsed and suffered a seizure in December 2024. His symptoms later progressed to hormone imbalance and worsening vision.

Consultant neurosurgeon Professor Hani Marcus, who performed the operation alongside surgical resident Danyal Khan, said, “Huge thanks to the trial participants and to the team committed to improving patient outcomes by taking this important first step globally.”

The AI therefore acted more like an additional set of highly trained eyes, helping surgeons steer clear of the areas that needed to be avoided while removing as much of the tumour as safely possible.

The AI Was Trained On Hundreds Of Surgical Videos

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The system was developed by researchers at the UCL Hawkes Institute and trained AI with hundreds of videos from previous endoscopic pituitary surgeries.

Dr Sophia Bano, Associate Professor in Robotics and Artificial Intelligence at UCL and technical lead for the system, said the AI had been exposed to a breadth of surgical examples that would take a human surgeon many years to learn.

She said, “It is designed to help recognise critical anatomy, surgical instruments and tissue interactions in real time, supporting the surgeon during highly delicate procedures.”

The technology can also potentially track surgical instruments and how they interact with tissue, allowing the possibility of giving surgeons additional feedback during complex procedures.

AI Is Supporting Surgeons, Not Replacing Them

The significance of the procedure lies in real-time assistance. The surgeon interprets what is happening, makes decisions and controls the instruments, while the AI provides valuable additional information about the anatomy.

Health Innovation Minister James Frith described the procedure as an example of AI's potential in healthcare, while stressing that safeguards remain essential. He said, “AI needs proper safeguards and we will always ensure that safety is taken seriously.”

Actress Busy Philipps recently revealed that she underwent two surgeries this year after doctors found a rare brain tumour. They discovered it unexpectedly during a full-body MRI despite her not having obvious symptoms.

The Dawson's Creek and Cougar Town actor, 47, told PEOPLE that the tumour was discovered in February after she underwent a Prenuvo full-body scan. The scan showed a 2.6-cm mass in her brain, which was later diagnosed as a grade 2 oligodendroglioma.

She underwent surgery on March 2 to remove the tumour. She then needed a second operation after developing a staphylococcal infection at the surgical site. She has since returned to work and said she is now undergoing regular monitoring, without chemotherapy or radiation.

What Is An Oligodendroglioma?

An oligodendroglioma is a rare type of glioma, a tumour that develops from cells in the brain or spinal cord.

These tumours arise from oligodendrocytes, cells that help produce myelin, the protective coating surrounding nerve fibres.

Grade 2 oligodendrogliomas are generally slow-growing, although they are classified as malignant because they can grow back or become more aggressive over time.

Dr Alexandra Miller, Philipps' neuro-oncologist at NYU Langone, told PEOPLE that the tumour is considered malignant because of its ability to regrow. She also said oligodendroglioma affects approximately 1,100 to 1,300 people in the US each year.

“It is considered malignant, but it has the best prognosis of all of the malignant gliomas,” says Miller. “It’s sort of defined as a cancerous tumor based on the ability of the tumor to regrow over time, rather than it looking very malignant under the microscope.”

Philipps’s early detection, before she had any symptoms, was beneficial, Dr. John Golfinos of NYU Langone said. He said that If she had waited until having symptoms like seizures, the tumor — which was a grade 2 on a scale of 2 to 4 — “would have been two or three times the size. It might have been much harder to take the whole thing out."

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Brain Tumours Can Remain Hidden For Years

One striking part of Philipps' story is that she did not have obvious neurological symptoms. Oligodendrogliomas can sometimes grow slowly enough that people do not immediately notice anything is wrong.

Symptoms depend heavily on where the tumour develops and can include seizures, headaches, changes in behaviour or personality, problems with speech or vision, weakness and difficulties with memory or thinking.

Philipps has said that, in retrospect, she had noticed some changes in her emotions and behaviour, including episodes of irritability and crying, but did not know they could be due to a brain tumour.

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After Surgery, Why She Didn't Need Chemotherapy Or Radiation

Surgery is often the first treatment for oligodendroglioma. Doctors aim to remove as much of the tumour as possible while protecting healthy brain tissue, particularly parts responsible for speech, movement, memory and other essential functions.

Her doctor, Orrin Devinsky of NYU Langone, was the physician who reviewed her MRI and told her that the mass was a genuine tumour and needed to be removed.

In Philipps' case, surgeons successfully removed the 2.6-cm mass. The tissue was then examined to determine exactly what type of tumour she had.

They found that it wasn't the brain tumour type that requires immediate chemotherapy or radiation. Because Philipps had a grade 2 oligodendroglioma that was surgically removed, her medical team has opted for regular monitoring rather than additional treatment at this stage.