Health
Blood Biomarkers Highlight Diet’s Impact on Cognitive Function: Study
United States: New findings detail how particular nutrients contribute to maintaining a healthy aging brain.
Details of the News
These beneficial nutrients match the composition of the Mediterranean diet, which is already associated with healthy cognitive aging, according to the study authors.
Aron Barbey, the senior researcher and director of the University of Nebraska–Lincoln’s Center for Brain, Biology and Behavior said that the identified nutrients “align with the extensive body of research in the field demonstrating the positive health effects of the Mediterranean Diet, which emphasizes foods rich in these beneficial nutrients,” as US News reported.
Study Insights
In the study, around 100 participants aged 65 to 75, who did not show signs of cognitive impairment, were provided blood samples and underwent brain function assessments through tests and MRI scans.
The study revealed that participants aged differently in terms of brain health, with some aging faster and others slower than their chronological age would suggest.
Notably, slower brain aging was observed alongside distinct serum nutrient profiles between the two groups.
The beneficial nutrient blood biomarkers identified included:
- These include vaccenic, gondoic ,alpha linolenic, elcosapentaenoic, eicosadienoic and lignoceric fatty acids.
- Lutein and zeaxanthin, are antioxidants and carotenoids.
- Two forms of vitamin E.
- Choline is an essential nutrient.
The researchers noted that these nutrient profiles bear similarities to the Mediterranean diet.
Expert Commentary
According to Barbey, such nutrient patterns “are promising and have favorable associations with measures of cognitive performance and brain health,” as US News reported.
Moreover, this first of its kind and the largest study to check blood markers for nutrient levels, and thereby combine that data with brain imaging and cognitive testing as researchers noted.
Barbey said, “This allows us to build a more robust understanding of the relationship between these factors.”
Adding further, “We move beyond simply measuring cognitive performance with traditional neuropsychological tests,” and “Instead, we simultaneously examine brain structure, function, and metabolism, demonstrating a direct link between these brain properties and cognitive abilities. Furthermore, we show that these brain properties are directly linked to diet and nutrition, as revealed by the patterns observed in nutrient biomarkers,” as Barbey noted.
The findings were published in the journal Nature Aging on May 21.
Health
Mpox Vaccine Breakthrough: Hope for Global Eradication
United States: The World Health Organization said on Friday that it had approved its first shot of vaccines against the mpox for use in adults, saying that it is a progression toward eradicating the disease in Africa.
More about the news
This approval is significant for organizations like Vaccines Alliance Gavi and UNICEF as they can now purchase it from Bavarian Nordic A/S.
Buying supplies is, however, a challenge since the product is manufactured by only one company.
According to WHO Director-General Tedros Adhanom Ghebreyesus, “This first (authorization) of a vaccine against mpox is an important step in our fight against the disease, both in the context of the current outbreaks in Africa and in future,” ABC News reported.
Previously, the UN health agency endorsed the two-dose mpox vaccine targeting the adult population who are 18 years and above. As for WHO, even though they did not advise the use of the vaccine for people below the age of 18, in particular cases, vaccines can be given to infants, children, and adolescents “in outbreak settings where the benefits of vaccination outweigh the potential risks.”
What more has the WHO recommended?
The WHO has also pointed out that it has been making an “access and allocation mechanism” to execute an even and fair distribution of mpox tests, treatments, and vaccines to the countries that need them most.
WHO has suggested that a dose could be split in the event that there is a shortage of the vaccine since one dose was proven to be 50 percent effective, and it is important to gather more information on the efficacy of the vaccine when used as a single shot.
About the vaccine
The Bavarian Nordic mpox vaccine was earlier named and approved by several developed countries in Europe and North America during the mpox outbreak in the year 2022.
In millions of adults, doses have proven that the vaccine assists in decelerating the virus distribution, but little is known about children.
Director-general of the Africa Center for Disease Control and Prevention said last month that seventy percent of the patients are below the age of 15 in Congo, where the outbreak is most severe, and children under the age of 15 are the majority of fatalities at 85 percent.
However, the WHO noted that more than 120 countries had confirmed more than 103 thousand legion cases of mpox since the start of the outbreak two years ago, ABC News reported.
As of Sunday, it recorded 723 people in well over a dozen countries in Africa have perished from the disease.
Health
9/11 Dust Exposure Linked to 14x Higher Dementia Risk
United States: The World Trade Center Health Program has been covering the medical expenses for cancer, respiratory ailments, mental health conditions, and musculoskeletal disorders linked to work at the site ever since it was established by an act of Congress and signed into law by President Barack Obama in 2011.
More around the news
Recently, researchers have started to look into cognitive impairment and dementia afflicting first responders at rates far higher than in the general population.
The study findings are urging healthcare providers to be more expressive regarding lobbying the World Trade Center Health Program, which is overseen by the CDC, to include dementia among the illnesses covered.
What more are the experts stating?
According to Benjamin Luft, the director of a program at Stony Brook University that cares for and monitors the health of first responders, “I’m hoping they will,” and “They have a systematic process in which they evaluate the scientific data. We’ve spent a huge amount of time and effort to establish that exposure to the neurotoxins and dust could cause these problems, and so should be eligible for coverage,” the Washington Post reported.
Lust has been working as a senior author of a study whose findings were published this summer and involved more than five thousand respondents who regularly undergone tests for over a decade.
They found that the ones with maximum exposure to the dust, as well as neurotoxic debris at the WTC, would have fourteen times more chances of becoming infected with dementia before the age of 65.
As per Ray Dorsey, a professor of neurology at the University of Rochester, the small-sized ordinary dust particles, which are termed fine particulate matter, could enter the nose and reach the brain to cause damage, the Washington Post reported.
However, as Dorsey said, “The nose is the front door to our brain,” and “Dust and chemicals set up shop in the small area of our brain, then spread to the parts of the brain important for memory.”
Health
FDA Approves Controversial Childhood Obesity Drug
United States: A drug has recently received approval for the treatment of obesity in adults and teenagers. It has been proven to be efficient for kids starting from the age of six when taken together with the necessary lifestyle changes – a new study found.
More about the news
A medication called liraglutide, used in adults with obesity, reduced body mass, attenuated weight gain, and enhanced favorable biomarkers in children aged between six and eleven years, research reported in a medical conference on Tuesday, and to the New England Journal of Medicine, ABC News reported.
Following the trial, the company that manufactures the drug, Novo Nordisk, has sought permission from the US authorities to apply the medication in children in that age bracket, the spokesperson said on Tuesday.
Should the medication be approved, it would be the first treatment for the kind of obesity experienced by over 20 percent of kids in the age group of 6 through 11 in the United States, according to the US CDC.
What do the study results show?
According to Dr. Claudia Fox, a pediatric obesity expert at the University of Minnesota, who led the study, “To date, children have had virtually no options for treating obesity,” and “They have been told to ‘try harder’ with diet and exercise,” ABC News reported.
Like most drugs with antiemetic properties, side effects include gastrointestinal effects in those administered the drug, including nausea, vomiting, and diarrhea, among others.
However, physicians and parents would have to research those risks and the absence of knowledge about the safety of employing such drugs in young children.
According to Dr. Melissa Crocker, a pediatric obesity specialist at Boston Children’s Hospital, “Having a medication for that age group, if approved, would be a really nice tool to have, but we’re also going to have to be careful about how widely we start using it,” ABC News reported.
“And I would answer that differently at six than I would at 11,” she added.
About Liraglutide
Liraglutide belongs to a class of drugs known as GLP-1s, which currently boast some of the biggest-selling drugs in the world, such as Wegovy and Mounjaro.
The medications make them resemble hormones that control hunger, feelings of being full or satiated, and digestion. Although this drug is given as a daily injection, it has been approved under the name of Victoza as a treatment for diabetes in adults and in children that are at least ten years of age and for Saxenda under the treatment of obesity affecting adults and children aged between 12 to 17 years.
The new study, also funded by Novo Nordisk, enrolled 82 children with a mean age of 10 and a baseline weight of 70kgs or 154. 2 pounds. In this sample, the average starting BMI was 31, categorizing the childhood population as obese or overweight.
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