Health
5 ways to preserve your vision as you age, according to an ophthalmologist
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As people age, vision naturally declines and the risk of eye conditions increases. That includes age-related macular degeneration (AMD), a condition that typically occurs in patients older than 50.
AMD is one of the leading causes of vision loss among adults over 60 and impacts millions of Americans, according to the American Macular Degeneration Foundation.
The condition degrades the ability to read, drive and recognize faces. AMD has no cure, so experts advocate for early detection and prevention.
In more advanced stages of AMD, patients may notice wavy straight lines, dark spots in their vision, or blurred central vision, according to ophthalmologist Dr. Vaidehi Dedania at NYU Langone Health.
Vision loss can be particularly difficult for seniors, as impaired eyesight can lead to more falls, decreased mobility and loss of independence, the doctor told Fox News Digital.
Age-related macular degeneration is one of the leading causes of vision loss among adults over 60. (iStock)
“We are moving toward a world where we don’t just react to vision loss — we can intercept it and take measures to delay what used to be inevitable for many patients,” Dedania said.
While the main risk factors for age-related macular degeneration are genetics and aging, the expert shared the following five lifestyle changes that could decrease the risk and severity of the disease.
DOCTOR SHARES 3 SIMPLE CHANGES TO STAY HEALTHY AND INDEPENDENT AS YOU AGE
No. 1: Stop smoking
Smoking is a major risk factor of AMD and can “significantly impact” the risk of vision loss, according to Dedania.
“The oxidative stress from smoking can really affect the retinal cells, and this is what increases someone’s risk of macular deterioration,” she told Fox News Digital. The habit can also speed up AMD’s progression and reduce the effectiveness of treatments.
Smoking can increase the risk of vision loss, according to experts. (iStock)
“We really encourage people who smoke to stop smoking, especially if they have family members with this condition,” the expert told Fox News Digital.
People who stopped smoking 20 years ago may have a risk level similar to those whose risk is based primarily on age and genetics, she noted. “That’s why quitting as early as possible is so important.”
No. 2: Get proper nutrition
Eating a healthy diet can impact the advancement of any disease, including AMD.
Diets high in processed foods, sugar and fat are associated with macular degeneration due to an imbalance of the gut microbiome, according to a recent study by researchers at the University of California, Davis.
COMMON DIABETES DRUG MAY HELP PRESERVE EYESIGHT AS PEOPLE AGE
“These are things that are currently still being explored, but we definitely know that our diet affects our risk of macular degeneration and how advanced it’s going to be,” Dedania told Fox News Digital.
She recommends adding more leafy greens and maintaining a balanced diet to support a healthy gut microbiome. In particular, she is a big advocate of the Mediterranean diet.
Eating a healthy diet can impact the advancement of any disease, including AMD. (iStock)
3. Consider supplements
Certain supplements can decrease the risk of AMD. In particular, AREDS2 is a specific combination of vitamins and minerals used in the Age-Related Eye Disease Study 2.
In clinical trials, the AREDS2 formula was shown to help slow progression of AMD in people with intermediate or late stages of the disease, according to the National Eye Institute.
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“While patients can take these supplements early on, we really only have data to show that it helps after they’ve already reached the intermediate stage,” Dedania noted.
Certain supplements could help slow progression of AMD in people with intermediate or late stages of the disease. (iStock)
While taking the supplement very early on may not significantly impact risk, it is safe to start anytime as long as patients aren’t doubling up on their vitamins, according to the doctor.
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Dedania noted that earlier formulations of AREDS — without the “2” — included beta-carotene, which has since been removed due to its link to lung cancer in smokers.
“Make sure that you’re finding the supplement that has AREDS2 on it and use that one,” she advised.
4. Exercise regularly
Regular movement is another core pillar of health that can help slow the progression of disease.
“Exercise falls into the overall balance of a healthy lifestyle,” Dedania said.
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“We know that exercise also diminishes oxidative stress, and these are things that we aim to do just for overall well-being — but there are studies that show that it also benefits patients with macular degeneration in terms of their risk of advanced disease.”
Patients should provide their doctor with information on a family history of eye conditions. (iStock)
No. 5: Get regular eye exams
Seeing your eye doctor for routine screenings could be the key to spotting an issue before it’s too late.
With AMD, patients are not typically symptomatic until they’ve reached intermediate or advanced stages of the disease. “Patients may have macular degeneration and they don’t know,” Dedania said.
AMD symptoms, like seeing wavy lines and black dots, don’t occur in early stages, according to an expert. (iStock)
The ophthalmologist reiterated that the disease is not frequently seen in patients under 50, and signs often go undetected in patients over 60.
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“It is important for patients 50 and above to have a general eye exam and come equipped with the knowledge of whether they have family members with macular degeneration,” she advised.
Health
Popular weight-loss diet shows surprising impact on serious mental health condition
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The keto diet may help individuals with anorexia nervosa, new research from UC San Diego School of Medicine suggests.
The small study, published in the journal Nature, enrolled 22 women between 18 and 45 years old who had a history of anorexia nervosa and a BMI (body mass index) above 17.5.
Anorexia nervosa (AN) is a severe psychiatric disorder involving food restriction and low body weight, the researchers describe. This is often followed by body dissatisfaction, an intense fear of eating, and a preoccupation with body shape and size even after weight restoration.
KETO DIET HAS SURPRISING IMPACT ON MENTAL HEALTH, RESEARCHERS DISCOVER
The participants followed a ketogenic therapy plan for 14 weeks, aiming for a diet consisting of 70% fat, 20% protein and 10% carbohydrates, according to a press release.
The participants followed a ketogenic therapy plan for 14 weeks, aiming for a diet consisting of 70% fat, 20% protein and 10% carbohydrates. (iStock)
The goal was to maintain weight while inducing nutritional ketosis — a metabolic state in which the body produces and uses ketones for energy because carbohydrate intake is low enough to shift metabolism toward fat burning.
The researchers monitored the participants via ketone testing, weekly weight checks, symptom questionnaires, and nutritional and psychiatric support.
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Among the remaining 18 participants, eating disorder symptoms reportedly improved in several areas, including restraint, depression scores, and concern with eating, shape and weight.
Overall scores on the Eating Disorder Examination Questionnaire (EDE-Q) also improved, with 72% of participants scoring in the recovered or normal range.
Eating disorder symptoms reportedly improved in several areas, according to the study findings. (iStock)
The participants’ body weight did not change significantly, and no BMI fell below 17.5, according to the results.
Those who continued to follow ketogenic therapy three months after the intervention had slightly better EDE-Q scores.
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The study authors concluded that ketogenic dietary therapy is “well-tolerated” and demonstrated “potential efficacy” in reducing anorexia nervosa symptoms in adults who are mildly underweight or weight-restored.
Although the study was “sufficiently powered,” the authors noted that the small sample size of predominantly White females limits the scope of the findings.
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“Future research should replicate these findings in more diverse populations and incorporate objective assessments of brain function, such as metabolic PET imaging, to assess brain glucose metabolism,” they wrote.
Those who continued to follow ketogenic therapy three months after the intervention had slightly better scores on the Eating Disorder Examination Questionnaire. (iStock)
Lead study author Guido Frank, MD, professor of psychiatry at the UC San Diego School of Medicine, who has studied and treated anorexia patients for more than 25 years, launched this study to broaden treatment options for this high-risk population.
Frank wrote in a statement that new approaches to anorexia nervosa are “urgently” needed.
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“Our work with ketogenic therapy looks beyond standard therapies and potentially at the underlying physiology of the disorder,” he went on.
“Growing evidence links anorexia nervosa to neurometabolic dysfunction, and we are hopeful that direct metabolic intervention can regulate neural function and address the psychological symptoms patients experience.”
Health
New cancer vaccine delivers stunning result against one of the deadliest skin cancers
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A new injectable therapy is showing positive results in reducing melanoma throughout a five-year period.
The personalized mRNA cancer therapy, called intismeran autogene, combined with the cancer immunotherapy drug KEYTRUDA (pembrolizumab), is a collaboration between Merck and Moderna.
The results from the phase 2b KEYNOTE-942 study were presented at the American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago on May 27.
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After about a five-year follow-up, the combo drug was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone.
The researchers analyzed data from 157 patients with high-risk stage 3 and 4 melanoma whose cancer had been removed via surgery. The participants were split into two groups — one received the combo therapy and the other only received pembrolizumab, according to a press release.
The therapy was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone after a five-year follow-up. (iStock)
The findings revealed that the combination group saw benefits that were “sustained and durable over time.”
Intismeran autogene is designed using mutations identified in a patient’s own tumor, with the intention of teaching the immune system what the cancer looks like so that it can recognize and attack it.
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According to the researchers, intismeran is “well-tolerated” with a “manageable” safety profile.
The most commonly cited side effects of the personalized mRNA vaccine plus KEYTRUDA were fatigue, injection-site pain, chills, fever and headache. The researchers reported no new long-term safety concerns and no severe vaccine-related adverse events.
The combination therapy is currently being evaluated in a phase 3 study — the final confirmation stage.
Patients with late-stage melanoma have a “significant risk” of cancer recurrence, according to an expert. (iStock)
In a Merck press release from January, Kyle Holen, MD, Moderna’s senior vice president and head of development, oncology and therapeutics, noted that this data highlights the “potential of a prolonged benefit … in patients with resected high-risk melanoma.”
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“We continue to invest in our platform in oncology because of encouraging outcomes like these, which illustrate mRNA’s potential in cancer care,” he said.
Dr. Marjorie Green, senior vice president and head of oncology, global clinical development at Merck Research Laboratories, also commented that for many patients with stage 3 or 4 melanoma, there is a “significant risk of recurrence following surgery.”
Researchers confirmed that the combination therapy is currently being evaluated in a phase 3 study. (iStock)
“As such, demonstrating the longer-term potential of intismeran autogene and KEYTRUDA to reduce the risk of recurrence for certain patients with melanoma is a meaningful milestone,” she said.
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The company cited encouraging five-year follow-up data and pointed to upcoming late-stage INTerpath trial results with Moderna in several hard-to-treat cancers.
Health
New ways to prevent flu revealed in ‘accidental’ lab breakthrough, study finds
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An accidental lab discovery has opened the door to entirely new ways of preventing the flu.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells, SWNS reported.
By targeting the specific molecules the viruses rely on, scientists found that they could block them from entering new cells and halt their replication altogether.
5 THINGS YOU NEED TO KNOW BEFORE GETTING YOUR FLU SHOT, ACCORDING TO DOCTORS
Researchers say these “fundamental insights” into seasonal influenza highlight a clear path toward developing better preventive medications.
“The hope is that fundamental, curiosity-based research like this helps to pave the way for novel strategies to treat and prevent influenza infections,” principal investigator Dr. Emily Bruce, from the University of Vermont’s Larner College of Medicine, said in the SWNS report.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells. (iStock)
While several flu strains cause illness, H1N1 and H3N2 influenza A viruses are the most common. However, current flu tests cannot differentiate between them, and clinical treatments are identical for both.
Although vaccines and antivirals are available, Bruce noted a “dire” need for better medications to stop the virus from spreading cell to xxcell.
“You don’t get sick when a virus is in one cell,” he noted. “You get sick because a virus replicates itself and goes into many more cells.”
HOW LONG YOU’RE CONTAGIOUS WITH THE FLU — AND WHEN IT’S SAFE TO GO OUT
The study, which was published in The Journal of Virology, originally aimed to map how viral RNA segments are transported within cells to create new viral particles.
The team used H1N1 and H3N2 viruses isolated from the nasal passages of positive patients in 2022.
Clinical treatments remain identical for both primary strains of the flu virus. (iStock)
During the investigation, the team unexpectedly stumbled upon a cellular pathway that blocked the virus from entering lung cells, SWNS reported.
RESEARCHERS LOCKED FLU PATIENTS IN A HOTEL WITH HEALTHY ADULTS — NO ONE GOT SICK
The data revealed that when a specific human protein called Rab11B was depleted, H3N2 viruses failed to enter human lung cells. H1N1 viruses were completely unaffected.
Using reverse genetics, the team mapped this defect and uncovered a brand-new, H3N2-specific role for Rab11B during viral entry.
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This discovery challenged the scientific assumption that all flu viruses enter cells the same way.
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“Viruses are like pirates from different countries hijacking someone’s ship,” Bruce said. “Different viruses, like different types of pirates, use different methods to get onboard.”
This discovery challenged the scientific assumption that all flu viruses enter cells the same way. (iStock)
“We had previously thought that all flu viruses used the same way to get into a cell, but we discovered that this is not true,” she went on. “H1N1 and H3N2 need different proteins to get in, and if you get rid of the right protein, a specific virus can’t get in.”
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While these findings identify a critical cellular pathway for viral entry, the study was conducted using isolated cells, the researchers acknowledged.
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Further research is needed to determine whether blocking the protein is safe and effective within a live, complex human respiratory system.
Bruce and the team hope to conduct further research to determine whether this Rab11B-dependency is a fundamental property of H3N2, or if it’s a trait unique to currently circulating flu strains.
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