When was the last time you measured your waistline? If you assume that BMI is the only number to focus on when it comes to your health, think twice. New research has revealed a shocking revelation—your waist circumference might be a far better predictor of men's cancer risk than BMI.

The study finds that for each 4-inch increase in waist size, a man's risk of cancer increases by a staggering 25%. Meanwhile, BMI, commonly regarded as the gold standard for assessing obesity, raises cancer risk by only 19% for the same weight gain. So, if you've been dismissing that pesky belly fat, it's time to take notice.

But why is your waistline so important? The reason is visceral fat—the hidden, deep fat that accumulates around your organs. Unlike other body fat, visceral fat is a stealthy troublemaker, causing inflammation, insulin resistance, and abnormal blood fat levels—all of which combine to create a cancer-perfect storm.

Obesity has been associated with an increased risk of numerous health conditions, including cancer, for decades. The research, though, indicates that a specific measure of the body—waist circumference—may be an even more reliable forecaster of cancer risk in men than the more frequently employed Body Mass Index (BMI). This finding emphasizes the need to pay particular attention to the distribution of fat and not merely to the weight of the body.

BMI has been the go-to measure for years for gauging health risks related to obesity. New research, though, that appears in The Journal of the National Cancer Institute indicates that waist measurement is a better predictor of cancer risk in men. According to the research, four more inches (10 cm) around the waist will add 25% to a man's cancer risk. Conversely, a 3.7 kg/m² rise in BMI (from a BMI of 24 to 27.7) increased cancer risk by only 19%.

Why is waist circumference a better predictor, then? Unlike BMI, which measures weight relative to height, waist circumference actually measures abdominal fat—specifically, visceral fat. This type of fat encircles internal organs and is also linked to higher levels of inflammation, insulin resistance, and abnormal blood lipids, all of which are factors in cancer growth. BMI, however, does not measure fat distribution, so two individuals with the same BMI can have very different levels of health risk depending on where fat is deposited on their bodies.

Why Men Are at Higher Risk?

Interestingly, the research identified a significant difference between men and women when it came to waist circumference and cancer risk. Although waist circumference and BMI were linked with obesity-related cancers in women, the relationship was weaker than for men. An increase of 12 cm (4.7 inches) in waist size or a 4.3 rise in BMI (from 24 to 28.3) raised the cancer risk in women by just 13%—a much lower percentage than for men.

Experts credit this difference to the way that fat is stored in the body. Men are more likely to carry fat around the abdomen, especially as visceral fat, which is more metabolically active and associated with cancer-producing biological alterations. Women, by contrast, store fat in peripheral sites such as the hips and thighs, where it is less likely to drive systemic inflammation and metabolic disturbances.

A possible reason is that men tend to depot fat more in the visceral regions, whereas women tend to carry more subcutaneous and peripheral fat," wrote the researchers. "This may render waist circumference a more robust risk factor for cancer in men and account for why waist circumference provides additional risk information beyond BMI in men but not women."

Cancer Types Most Linked to Abdominal Fat

The research used the International Agency for Research on Cancer (IARC) data to define obesity-related cancers. These cancers are esophageal (adenocarcinoma), gastric (cardia), colorectal, rectal, liver, gallbladder, pancreatic, renal, and thyroid cancers, and multiple myeloma and meningioma. In men, abdominal obesity is especially significant in raising the risk of these cancers through high levels of insulin and markers of inflammation.

For women, the research proposes that both waist circumference and hip circumference may give a more accurate estimate of visceral fat and cancer risk. "Adding hip circumference to risk models could strengthen the link between waist circumference and cancer, especially in women," researchers observed.

What This Means for Men's Health and Cancer Prevention?

With these results, doctors advise men to be more mindful of their waistline than only their BMI. Waist size is an easy method to gauge health risk, and its maintenance through lifestyle changes might be the key to cancer prevention.

How To Reduce Cancer Risk In Men?

Track Your Waist Size: Regularly measure your waist circumference and try to keep it in a healthy range (below 40 inches for men, according to medical advice).

Eat a Balanced Diet: A diet containing high fiber, lean protein, and healthy fats can assist in limiting visceral fat gain.

Exercise Consistently: Regular exercise with a combination of aerobic and strength training will help maintain a healthy waistline.

Control Stress and Sleep: Persistent stress and inadequate sleep tend to cause weight gain, especially in the midsection of the body.

Regular Health Screenings: Early identification of cancer risk factors through regular screening can greatly enhance long-term health status.

A study of more than 700 individuals found distinct differences in the mix of bacteria in the mouths and lungs of those with severe long COVID.

Published in the European Respiratory Journal, the study found that differences in the lung microbiome were linked to respiratory problems, cognitive difficulties and digestive symptoms associated with long COVID.

The findings may help researchers understand why some people develop long COVID and identify potential treatments, according to the team from the University of Dundee, UK.

"The microbiome is important to maintain health throughout the body, so it is a strong candidate for something that may contribute to long COVID,” said lead author Dr. Daniela Alferes de Lima Headley.

What Did The Study Find?

Also read: XFG COVID Variant: What India Should Watch As Cases Rise In UK And France

The observational study included 771 adults who had been hospitalized for COVID-19 between February 2020 and March 2021. Researchers grouped participants according to the severity of their ongoing health problems and symptoms.

The participants had an average age of 57.5 years, and 38.5% were women.

Six months after hospital discharge, researchers collected saliva samples to examine microbes in the mouth and sputum samples to study the lung microbiome. They used DNA sequencing to identify the microbes and analyze their diversity. Participants also completed questionnaires about their symptoms.

The results showed that people with very severe long COVID had distinct differences in their oral and lung microbiomes compared with those who had fewer ongoing symptoms.

Microbiome differences were also associated with:

• • Respiratory problems: Reduced lung function.
  • Cognitive symptoms: Brain fog, memory problems, and difficulty with attention and concentration.
  • Digestive issues: Abdominal pain, nausea, diarrhea and loss of appetite.

Bacterial Changes Linked To Inflammation

Further, the changes associated with long COVID symptoms also included an increased abundance of bacteria that produce lactic acid. These changes were also linked to signs of inflammation in participants' blood samples.

James Chalmers, chair of respiratory research at the University of Dundee, said the greatest microbiome changes were found in people with the most severe symptoms five to six months after COVID-19.

"We also found that changes in the airway microbiome were linked not just to lung problems, but also to symptoms like brain fog and gut symptoms, suggesting the lung microbiome could have effects on health more broadly," he added.

However, the researchers do not yet know whether these microbiome differences existed before COVID-19 or developed after infection. The long-term effects of these changes also remain unknown.

Read More: COVID-19 May Raise Risk of 6 Allergic Conditions, Study Finds

Could The Findings Lead To New Treatments?

Chalmers said more research is needed to understand what causes long COVID, which continues to affect many people worldwide.

Because the microbiome can be altered through interventions such as antibiotics and probiotics, understanding its role could help researchers explore potential treatment options.

What Is Long COVID?

Long COVID refers to new, returning or ongoing health problems that persist four or more weeks after the initial COVID-19 infection. Symptoms can last for months or even years.

Common symptoms include fatigue, brain fog, memory problems, difficulty concentrating and slowed thinking.

Research has also suggested that brain inflammation may persist even after the virus is no longer detectable.

For some women with endometriosis, getting a diagnosis is only the beginning of a long struggle to access treatment and navigate management.

In Canada, long waitlists for specialist appointments are pushing patients to consider expensive surgery abroad, highlighting how delays in care can prolong pain and disrupt everyday life.

Noelle Menu, 37, from Calgary, said her symptoms intensified after she stopped taking birth control while trying to conceive at 26.

Years of pain, emergency room visits, surgery and delays in specialist care eventually led her and her husband to seek private treatment in Tijuana, Mexico.

After being told that waiting several years to see a specialist in Canada was possible, Menu said: “We can’t deal with it in Canada.”

The couple used their savings and went into debt to pay for treatment at EndoGlobal in Mexico. The total cost was approximately $35,000, including travel, accommodation and other expenses, according to CBC News.

Her experience highlights the delay in addressing endometriosis that can intensify debilitating symptoms.

What Is Endometriosis And Why Can It Be Difficult To Diagnose?

Endometriosis is a chronic condition in which tissue similar to the lining of the uterus grows outside it, potentially affecting the ovaries, bowel, bladder and other areas. The resulting inflammation and scar tissue can cause severe menstrual cramps, persistent pelvic pain, painful sex, bowel or urinary symptoms and difficulties conceiving.

The World Health Organization estimates that endometriosis affects around 10% of reproductive-age women worldwide, or approximately 190 million people.

Diagnosis can be challenging because symptoms vary and may overlap with other conditions. There is no single definitive test that identifies every case. Doctors may use a detailed medical history, pelvic examination, ultrasound or MRI, with surgery sometimes needed to investigate or treat suspected disease.

The WHO estimates that diagnosis commonly takes between four and 12 years, leaving many patients managing symptoms without a clear explanation for prolonged periods.

Also read: Endometriosis: Repurposed Anti-Parasite Drug Shows Promise In Mouse Study

How Do Delays Affect Patients?

For patients with severe disease, waiting for specialist care can mean continuing to live with pain that interferes with work, relationships, sleep and fertility plans.

Another Canadian patient, identified in CBC's report as Papiernik, described discovering that endometriosis had infiltrated her colon after a colonoscopy detected a mass. She was referred for specialist care but faced further waits for an appointment and surgery.

“Living like this for two years was just not an option for me,” she said.

Canada's House of Commons health committee has identified gaps in endometriosis care, while the condition's economic impact includes lost productivity and healthcare costs. The issue is not simply whether treatment exists, but whether patients can access appropriate care before symptoms and complications become harder to manage.

Also read: Urine & Vaginal Samples May Help Detect Womb Cancer: Lancet Study Suggests Less Invasive Way To Triage Patients

Does Surgery Cure Endometriosis?

Surgery can remove endometriosis lesions, adhesions and scar tissue, reducing pain and treating complications. However, it is not a guaranteed cure. Symptoms may persist or return, and treatment decisions depend on disease severity, the organs involved, fertility goals and previous treatment.

Hormonal medicines and pain management can also help control symptoms. Some patients benefit from a combination of medical treatment, surgery and ongoing follow-up.

Travelling abroad may offer faster access to specialist treatment, but it comes with financial costs and other challenges. Patients should consider the surgeon's experience, the facility's standards, the possibility of complications and arrangements for follow-up after returning home.

A routine heart scan helped doctors detect pancreatic cancer in a 72-year-old US woman before it was too late. Vicky Titcomb, a Cape Cod bookstore owner and great-grandmother, underwent the scan at Mass General Brigham in March 2025, before traveling to New York City to visit her son.

Although she felt healthy, the scan revealed an abnormality on her pancreas. Further testing confirmed pancreatic cancer, one of the deadliest forms of cancer, CBS News reported.

“I felt like my life just switched in that moment,” Titcomb said. “It was a very weird feeling.”

Titcomb had undergone treatment for breast cancer in 2012.

In 2025, she was diagnosed with stage 1 breast cancer as well as pancreatic cancer. Doctors also found a mass on her ovary, which proved benign after the ovary was removed.

Why Early Detection Matters In Pancreatic Cancer

Also read: Daraxonrasib: US FDA Approves Once-Daily Pill for Metastatic Pancreatic Cancer

Pancreatic cancer is often diagnosed after it has spread to other organs. Its five-year overall survival rate is 13%.

The American Association for Cancer Research noted in its 2026 Cancer Progress Report that pancreatic cancer survival rates have shown little improvement despite advances in cancer care.

Doctors at Mass General Brigham planned chemotherapy and radiation to shrink Titcomb’s pancreatic tumor before surgery.

“I was told the size of the (pancreatic) cancer was about the size of a grape. The goal, to me, was trying to make this cancer a raisin,” she said. “That's the way I visualized it.”

The plan was to perform a Whipple procedure, a complex operation that removes the head of the pancreas, part of the small intestine, the gallbladder and the bile duct. Only about one in five pancreatic cancer patients is eligible for this surgery.

Titcomb’s early diagnosis made the operation possible.

“If I had not had that scan when I did, the outcome would have been bad,” she said.

Chemotherapy, Radiation And Surgery

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Titcomb began chemotherapy in June 2025, receiving eight doses over four months. She then underwent three weeks of radiation and additional chemotherapy.

Surgical oncologist Dr. Thomas Clancy said she tolerated the treatment “very well.” The therapy shrank the pancreatic tumor enough for surgery.

On November 4, Titcomb underwent surgery to treat her breast cancer. Just over two weeks later, Clancy performed a robotic Whipple procedure to remove the affected part of her pancreas and other structures.

The operation was successful, and Titcomb said she was walking that night. She returned home after several days in the hospital.

Although she was recovering well, Clancy recommended two more months of chemotherapy because pancreatic cancer can be aggressive.

“There was a lot going on,” Titcomb said. “I just tried to cope with the day-to-day.”

No Evidence Of Cancer After Treatment

In March 2026, after further treatment, Clancy told Titcomb she had no evidence of cancer. She will continue to undergo scans every three months.

“She’s living her life. I generally tell patients at this point, ‘You’re done with therapy ... you go about your days,’” Clancy said. “The goal is to not be thinking about it all the time.”

Titcomb is returning to running her bookstore, which family members helped manage during her treatment. She is also spending time with her children, grandchildren and great-grandchildren, keeping in touch with those who live far away through photos, videos and phone calls.