Health
Alzheimer’s and Parkinson’s risk is higher for people with body fat in two specific areas
Excess fat in certain areas of the human body could make people more prone to neurological diseases like Alzheimer’s and Parkinson’s, a new study suggests.
The study, published in the journal Neurology — the medical journal of the American Academy of Neurology — linked higher levels of body fat in the arms and belly with a greater chance of developing these conditions.
In another key finding, people who have more muscle strength were at lower risk of developing these diseases.
HIDDEN BELLY FAT COULD SIGNAL ALZHEIMER’S DISEASE RISK 15 YEARS BEFORE SYMPTOMS SHOW UP, STUDY FINDS
“Overall, the key takeaway message from our study finding is that body composition and cardiovascular diseases may be potential targets for preventing neurodegenerative diseases,” said lead study author Shishi Xu, a clinician in the Department of Endocrinology and Metabolism at West China Hospital of Sichuan University, in a statement to Fox News Digital.
The study group that had higher levels of belly fat had a 13% greater chance of developing neurological diseases like Alzheimer’s and Parkinson’s compared to those with lower levels, the researchers found.
Excess fat in certain areas of the body could make people more prone to neurological diseases such as Alzheimer’s and Parkinson’s, a new study suggests. (iStock)
Participants with higher levels of arm fat had an 18% higher risk.
Those with high muscle strength were 26% less likely to develop these types of diseases than those with low levels of strength, according to Xu.
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Cardiovascular disease risk plays a role, too, she said.
“If you are exposed to adverse body composition patterns, such as belly fat, you will have a higher risk of developing cardiovascular diseases, which significantly increases your risk of future neurodegenerative diseases,” Xu said.
Higher levels of body fat in the arms and belly were linked to a greater chance of developing neurological conditions. (iStock)
“On contrast, actively preventing CVDs at an early stage after exposure to adverse body composition patterns may decrease your future risk of neurodegenerative diseases by 10.7% to 35.3%.”
Dr. James Galvin, director of the Comprehensive Center for Brain Health at the University of Miami Health System, was not involved in the study, but said the findings did not surprise him.
“Body composition and cardiovascular diseases may be potential targets for preventing neurodegenerative diseases.”
“This is consistent with a body of literature suggesting a bidirectional relationship between brain and body,” he told Fox News Digital.
“Loss of muscle mass and strength (sarcopenia) and increase in body fat, particularly visceral fat, are risk factors for cognitive impairment.”
Potential limitations
In observational studies like this one, it can be tough to distinguish between correlation or causation, Xu said.
“Although we have made significant efforts in this study to approach a causal relationship, we acknowledge that residual reverse causation may still bias our findings,” she told Fox News Digital.
Taking steps to achieve healthier body composition may be more effective for preventing neurological diseases than general weight control, researchers said. (iStock)
Although the study suggests that body composition and cardiovascular diseases may be potential targets for preventing neurodegenerative diseases, Xu noted that more evidence is needed to confirm that these are causal risk factors.
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Galvin noted that another major limitation of the study was the lack of diversity in the sample.
“This is unfortunate, as obesity is an important risk factor in many minoritized populations, and our own research has demonstrated that physical frailty is an important mediator of cognitive decline in African American older adults,” he said.
Recommended lifestyle changes
Based on the findings, the researchers said, taking steps to achieve healthier body composition — such as reducing belly and arm fat while promoting healthy muscle development — may be more effective for preventing neurological diseases than general weight control.
“Lifestyle modifications like engaging in resistance training, reducing sedentary behavior and adhering to a balanced diet can be effective in reducing abdominal fat as well as enhancing muscle strength, which may potentially offer greater neuroprotective benefits than weight-focused anti-obesity medications,” Xu said.
The researchers also stated that early management of cardiovascular diseases may reduce the risk of neurodegenerative diseases.
The quality or distribution of muscle and fat, rather than the absolute weight, may be more important for your health, according to researchers. (iStock)
The quality or distribution of muscle and fat, rather than the absolute weight, may be more important for your health, according to Xu.
“In recent years, due to the widespread use and even abuse of weight-loss drugs, people have become overly concerned with overall weight and often overlook the key role of different body components,” she said.
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Muscle strength is often overlooked, the researcher noted.
“Our current study findings highlight that enhancing muscle strength is important and may potentially offer neuroprotective benefits,” she said.
“Our current study findings highlight that enhancing muscle strength is important and may potentially offer neuroprotective benefits,” the researcher said. (iStock)
“Therefore, maintaining a healthy lifestyle and enhancing your muscle strength are crucial.”
Galvin agreed, recommending that people should focus on reducing body fat while maintaining skeletal muscle by adding resistance and flexibility training and changing nutrition patterns.
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Added the doctor, “As we learn more about the impact of lifestyle on brain health and risk of disease, it is increasingly evident that there are many ways to build a better brain as we age.”
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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.
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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.”
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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.
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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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Eating processed meat like ham, sausage and bacon may be linked to a higher risk of certain types of cancer, according to new research.
While health organizations have already confirmed that processed meat can contribute to colon cancer, this study looked closer at cancers in the upper digestive tract, where the link has historically been less clear.
To understand these connections, researchers from the European Prospective Investigation into Cancer and Nutrition (EPIC), one of the world’s largest long-term nutrition and cancer cohorts, tracked the health and diets of 450,112 people across Europe for an average of 14 years.
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The study group included 131,426 men and 318,686 women, according to the study’s press release.
During the follow-up period, 876 people developed stomach cancer and 215 people developed esophageal adenocarcinoma, which is cancer of the tube connecting the mouth to the stomach.
For female participants, eating both processed meat and white meat was linked to an increased risk of developing the disease. (iStock)
Researchers tracked where the stomach cancers grew, separating them into the upper part of the stomach near the throat and the lower part of the stomach.
The researchers also sorted the tumors into two categories based on how the cancer cells appeared under a microscope: intestinal, which forms more organized structures, and diffuse, in which the cells are more scattered throughout the tissue.
BACTERIA IN YOUR MOUTH MAY TRAVEL TO THE GUT AND TRIGGER STOMACH CANCER, RESEARCH FINDS
After adjusting for other lifestyle factors, the researchers found that for every extra 30 grams of processed meat a person ate per day, their overall risk of stomach cancer went up by 9%. Eating that same extra 30 grams a day was also linked to a 13% higher risk of esophageal adenocarcinoma.
A standard single slice of regular deli-sliced ham or lunch meat averages around 28 grams, according to USDA data and nutritional tracking databases.
An extra 20 grams of white meat, such as chicken and turkey, was linked to a 12% higher risk of cancer in the main body of the stomach. (iStock)
An extra 20 grams of white meat, such as chicken or turkey, was linked to a 12% higher risk of cancer in the main body of the stomach, the researchers noted.
The study also revealed differences between men and women. For male participants, only processed meat showed a clear, statistically significant link to a higher risk of stomach cancer. For female participants, however, eating both processed meat and white meat was linked to an increased risk.
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These findings align with global health benchmarks, particularly those established by the World Health Organization’s International Agency for Research on Cancer.
The agency has long classified processed meat as a known human carcinogen, primarily due to its strong, well-documented links to colorectal cancer.
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However, health organizations have also consistently pointed to a potential, yet less definitive, relationship between these meats and cancers of the stomach.
Eating 30 grams of processed meat a day, or the equivalent to one slice of ham, was linked to a 13% higher risk of esophageal adenocarcinoma. (iStock)
Further scientific investigation is needed to confirm the findings and to account for other underlying risk factors, such as certain stomach infections, which could interact with dietary habits.
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A key limitation of the study is its reliance on self-reported diets, which can sometimes lead to inaccuracies in how participants recall their meat consumption over time, the researchers noted.
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The findings were published in the International Journal of Cancer.
Fox News Digital reached out to the researchers requesting comment.
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