Health
Men face higher cancer risk with this specific body fat measurement
Obesity has long been established as a risk factor for cancer, particularly when it’s stored in certain areas of the body.
Now, new research suggests that a larger waist circumference is a bigger risk factor than body mass index (BMI) for obesity-related cancers — but only for men, not for women.
The findings, which were published in the Journal of the National Cancer Institute, will be presented in May at the European Congress on Obesity in Malaga, Spain.
BMI IS WRONG WAY TO MEASURE OBESITY, RESEARCHERS SAY
The study was led by Dr. Ming Sun, Dr. Josef Fritz and Dr. Tanja Stocks from Lund University in Sweden.
New research suggests that a larger waist circumference is a bigger risk factor than body mass index for obesity-related cancers — but only for men, not for women. (iStock)
The researchers analyzed data from 340,000 Swedish people averaging 51 years of age whose BMI and waist circumference assessments were performed between 1981 and 2019, according to a press release.
They then compared those statistics to cancer diagnoses pulled from the Swedish Cancer Register.
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Over a period of 14 years, there were 18,185 diagnoses of obesity-related cancers among the patients in the study.
For men, an increase in waist circumference of around 11 cm resulted in a 25% higher risk of obesity-related cancer.
This was a bigger risk factor than having an increased BMI, which increased the chances by 19%.
For men, an increase in waist circumference of around 11 cm resulted in a 25% higher risk of obesity-related cancer. (iStock)
For women, an increase of about 12 cm in waist circumference and an increase in BMI were both linked to a 13% greater cancer risk, the study found.
Obesity-related cancers include cancers of the oesophagus (adenocarcinoma), gastric (cardia), colon, rectum, liver/intrahepatic bile ducts, gallbladder, pancreas, breast (postmenopausal), endometrium, ovary, renal cell carcinoma, meningioma, thyroid and multiple myeloma, the release stated.
“BMI is a measure of body size, but does not provide information on fat distribution, whereas waist circumference is a proxy more closely related to abdominal adiposity.”
Overall, the researchers found waist circumference to be a more accurate cancer predictor than BMI.
“BMI is a measure of body size, but does not provide information on fat distribution, whereas waist circumference is a proxy more closely related to abdominal adiposity,” they wrote.
“This distinction is crucial because visceral fat, which accumulates around the abdominal organs, is more metabolically active and has been implicated in adverse health outcomes, including insulin resistance, inflammation and abnormal blood fat levels. Consequently, individuals with similar BMIs may have distinct cancer risks due to differences in fat distribution.”
Why the difference between men and women?
One potential reason for the gender discrepancy, according to the researchers, is that men are more likely to store fat viscerally (in the belly), while women generally accumulate more subcutaneous fat (under the skin) and peripheral fat (in the arms and legs).
ALZHEIMER’S AND PARKINSON’S RISK IS HIGHER FOR PEOPLE WITH BODY FAT IN TWO SPECIFIC AREAS
“Consequently, waist circumference is a more accurate measure of visceral fat in men than in women,” the researchers wrote.
“This may make waist circumference a stronger risk factor of cancer in men, and explain why waist circumference adds risk information beyond that conveyed by BMI in men, but not women.”
The researchers suggested that combining hip circumference with waist circumference in women could give a more accurate estimation of visceral fat. (iStock)
Excess body fat is also linked to higher insulin levels in men than in women, the researchers noted, which could be a factor in waist circumference being more strongly linked to men’s cancer risk.
“The divergence in how waist circumference and BMI relate to cancer risk between men and women underscores the complexity of the impact of adiposity (excess body fat) on cancer development,” the researchers wrote.
“It suggests that considering biological and physiological differences between the sexes might be helpful when assessing cancer risk. Further research is needed to explore these sex differences.”
They also suggested that combining hip circumference with waist circumference in women could give a more accurate estimation of visceral fat.
“Waist circumference is a more accurate measure of visceral fat in men than in women,” the researchers wrote. (iStock)
Dr. Marc Siegel, clinical professor of medicine at NYU Langone Health and Fox News senior medical analyst, was not involved in the study, but reinforced that BMI is a “good indicator of obesity, but is not the only one.”
“Belly fat contains a lot of the inflammatory chemicals that act as carcinogens.”
“Obesity leads to inflammation, and inflammation correlates with many kinds of cancer, including breast and prostate and cancers of the gastrointestinal tract,” he told Fox News Digital.
“It is not surprising that waist circumference in men could be a more precise indicator if measured properly, because belly fat contains a lot of the inflammatory chemicals that act as carcinogens,” the doctor noted.
Obesity-related cancers include cancers of the oesophagus (adenocarcinoma), gastric (cardia), colon, rectum, liver/intrahepatic bile ducts, gallbladder, pancreas, breast (postmenopausal), endometrium, ovary, renal cell carcinoma, meningioma, thyroid and multiple myeloma. (American Cancer Society/Getty Images)
For women, where fat distribution is somewhat different, Siegel agrees that it “makes sense” to consider both waist and hip circumference, as the Swedish study suggests.
“The study looks at over 300,000 people and is an important new reference, but it is observational, so it shows an association, but not proof,” the doctor added.
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Dr. Brett Osborn, a Florida neurosurgeon and longevity expert, also detailed the different ways in which men and women store fat.
“While women accumulate more subcutaneous fat — on the hips, thighs and buttocks — men pack it around the waist, deep inside the abdomen,” Osborn, who was not involved in the study, told Fox News Digital.
“This is visceral fat, and it’s metabolically toxic. It’s not just sitting there. It’s active, like a gland, secreting inflammatory chemicals (cytokines), raising insulin levels, disrupting hormones and laying the groundwork for cancer cell growth.”
Strength training three times per week is ideal, one doctor advised, adding, “Resistance training reduces visceral fat and inflammation.” (iStock)
Osborn reiterated that BMI is limited in its ability to accurately measure excess fat.
“First, BMI doesn’t factor in muscle mass, so a short, stocky individual with a low body fat percentage may be categorized as overweight or obese, when in fact quite the opposite is true,” he said.
“Second, BMI doesn’t tell you where the body fat is, and as it turns out, that’s what’s critical — at least in men.”
Minimizing risk
To reduce cancer risk, Osborn recommends that men measure their waistlines to ensure they’re in a healthy range. People can also track their visceral fat score on a medical-grade anthropometry scale, he said.
“Understand that belly fat isn’t just cosmetic — it’s carcinogenic.”
“Anything above 40 inches (102 cm) is a red flag,” he told Fox News Digital.
Strength training three times per week is ideal, the doctor advised, adding, “Resistance training reduces visceral fat and inflammation.”
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Proper nutrition is also important, he said. “Eat like your life depends on it — because it does. Stop feeding your cancer risk.”
“Understand that belly fat isn’t just cosmetic — it’s carcinogenic,” Osborn added. “You may not feel it now, but the clock is ticking. Visceral fat is silent, aggressive and deadly — and it’s doing damage even if your BMI is ‘normal.’”
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Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27.
In a post on Substack titled “The Day I’ll Never Remember,” she detailed a sudden episode that left her unable to recall the current month, year and president.
“I thought it was 2024. And I believed Joe Biden was president,” she wrote.
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The event occurred while Couric was attending the Aspen Ideas Festival in Colorado, during which she participated in two public panels — one on AI and one on journalism — both of which she cannot remember at all.
“I have no idea what we talked about, or of what occurred when the panels ended,” she said.
Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27. (Getty Images)
John Molner — Couric’s husband, who was in attendance at the festival and the two panels — also shared his account.
After the event, someone told Molner that Katie wasn’t feeling well. When he reached her, an EMT and a doctor were tending to her. “I could tell something was off,” he wrote. “It could have been altitude sickness, but Katie was definitely not all there.”
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At the hospital, when Couric struggled to recall the year, the president and her grandchildren’s names, doctors began checking for a stroke.
An MRI revealed no signs of stroke, which was a relief, but “Katie’s ‘fog’ became a lot more apparent,” Molner wrote.
John Molner, Couric’s husband, who was in attendance at the festival and the two panels, also shared his account. (Getty Images)
“She repeatedly asked me the same questions: ‘What was I doing before we got to the hospital?’ ‘Why am I at the hospital?’”
Couric was ultimately diagnosed with transient global amnesia, a sudden, temporary episode of memory loss that prevents a person from forming new memories and may also erase some recent memories, according to Mayo Clinic.
“The cause seems to be as mysterious as the brain itself.”
It is not caused by a stroke, seizure or head injury, and it usually resolves completely within 24 hours.
“[It’s] just a very weird neural episode that’s pretty uncommon and, at least in most cases, is a ‘one and done’ experience,” Molner said.
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Couric said she finally began feeling “like herself” again around 9 p.m. and went to sleep at 2 a.m.
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.”
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.” (Getty Images)
Data shows that approximately three to eight people per 100,000 will have an episode of transient global amnesia, with people 50 years of age and older at higher risk.
The specific cause of TGA is not known, but some experts believe it stems from a “temporary dysfunction in the brain’s hippocampus — the area responsible for creating new memories,” Couric shared.
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“Doctors believe this is driven by brief interruptions in blood or oxygen flow, or microscopic spasm in the blood vessels.”
Episodes could potentially be triggered by intense physical exertion, emotional distress, extreme temperature changes or migraines, experts say.
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Approximately 15% of patients will have a recurrence 10 years later.
“Why did this happen to me? Was the altitude an issue? Was I dehydrated? Tired? Stressed? The literature doesn’t seem to indicate that these are contributing factors, but the cause seems to be as mysterious as the brain itself,” Couric wrote.
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise. (iStock)
“All I know is that those hours will be forever lost. Someone described it as my brain failing to hit the ‘record button.’”
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“While this was a freaky occurrence, it could have been much more serious. So ultimately, I’m relieved — even though several hours of a Saturday in June will always be missing for me.”
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise.
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Older adults identified as “super movers” are about half as likely to develop cognitive impairment than their peers.
That’s according to a recent study led by Stony Brook Medicine in New York, which evaluated the cognitive function of 4,000 adults 80 and over who participated in multiple aging and longevity studies over several years.
Among this group, 6% to 10% were classified as super movers, which means they walk at a much faster pace than others of the same age and gender — at speeds comparable to people three decades younger.
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The super movers were found to have about half the risk of cognitive decline compared to seniors with typical gait speed.
The findings were published in the journal Neurology on June 16.
Older adults identified as “super movers” are about half as likely to develop cognitive impairment than their peers. (iStock)
“The study reinforces that mobility and brain health are closely connected,” lead study author Dr. Joe Verghese, MD, neurologist at Stony Brook Medicine, told Fox News Digital. “This suggests that preserving mobility may be an important marker of healthy brain aging and resilience.”
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The most intriguing finding, according to Verghese, was that super movers maintained cognitive function despite having similar dementia-related brain changes as their peers.
In postmortem brain analysis, there was no difference in dementia-related pathologies between the super movers and the slower walkers, the study stated.
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“This suggests they may possess resilience mechanisms that help preserve brain function even in the presence of age-related changes,” he said. “Understanding these resilience factors could lead to new strategies for promoting healthy brain aging.”
As the study was observational, there were some limitations, and it does not prove that walking faster prevents dementia, the researchers noted.
Super movers were found to have about half the risk of cognitive decline compared to seniors with typical gait speed. (iStock)
“Other factors, such as cardiovascular health, physical fitness or genetics, may also contribute to both faster walking and better cognitive outcomes,” Verghese said.
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This study adds to growing evidence that what’s good for the heart and muscles also benefits the brain, he noted, adding that “staying physically active remains one of the most effective, evidence-based ways to support healthy aging.”
“Walking speed is best viewed as a marker of overall health, not a treatment.”
“The broader message is that physical activity is important at any age,” Verghese said. “Walking is an easy step-up point because you don’t need any special equipment. You can do it inside or outdoors, and you can do it on a regular basis. You can walk with a dog, you can walk with a friend.”
Any activity is beneficial if it’s done regularly and with the right intensity, he added.
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Rather than just trying to walk faster, the neurologist recommends that seniors focus on maintaining mobility through regular physical activity, strength training, balance exercises and good cardiovascular health.
“Walking speed is best viewed as a marker of overall health, not a treatment,” Verghese noted.
Major public health guidelines from the CDC and U.S. Physical Activity Guidelines recommend at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking.
Major public health guidelines from the CDC and U.S. Physical Activity Guidelines recommend at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking. (iStock)
This can be achieved by walking 30 minutes a day, five days a week, or about 20 to 25 minutes most days. Another option is to engage in shorter sessions that add up over the day.
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“You have to do it within your health limitations and medical conditions,” Verghese advised. “So if there are any medical concerns, I would get your physician to clear you before starting exercise.” The good thing about walking, he added, is that you can start at a slow pace and then gradually build up to a brisker pace.
“And then adding on strength and balance training, whatever age you are, I think is also important.”
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