Your waistline may be a better predictor of cancer risk than your bathroom scale. Although obesity has long been linked to higher rates of cancer, research points to a more precise culprit: where fat is stored in the body.
Visceral fat, the deep belly fat that wraps around the liver, pancreas, and intestines, doesn’t just sit there. It actively releases inflammatory chemicals and hormones that create ideal conditions for cancer to develop and spread.
Unlike subcutaneous fat, the fat just under the skin, visceral fat often goes unseen and can bypass the scale—meaning even people with a normal body mass index are at hidden cancer risk.
To understand why visceral fat is so risky and how it can be targeted, it helps to know exactly what and where it is.
What Makes Visceral Fat Different?
Visceral fat sits deep in the abdominal cavity, surrounding organs including the liver, pancreas, and intestines. You can’t pinch it or see it in the mirror, which is why many people don’t realize they’re carrying it.
“Visceral fat is also called active fat, as it’s an endocrine organ that releases harmful compounds directly into the bloodstream and into the portal vein that goes straight to the liver. The main danger is that it releases pro-inflammatory cytokines,” Dr. Wiljon Beltre, a board-certified, fellowship-trained bariatric and metabolic surgeon, told The Epoch Times.
This type of fat is particularly dangerous because it secretes significantly higher levels of pro-inflammatory cytokines and hormones than subcutaneous fat, contributing to chronic, low-grade systemic inflammation.
Visceral fat is measured using imaging techniques such as MRI and CT scans or estimated with simple waist-to-hip ratio calculations. A waist circumference of more than 35 inches for women and 40 inches for men is considered a red flag for elevated visceral fat and associated health risks.
How Visceral Fat Promotes Cancer
Visceral fat creates what researchers call a “pro-tumor microenvironment”—ideal conditions for cancer to take root and grow.
“There’s a direct link to cancer due to the constant, low-grade systemic inflammation,” Beltre said. “This damages DNA and makes cells more prone to malignant transformation.”
The mechanism involves several pathways. Visceral fat secretes inflammatory cytokines, which promote oxidative stress, drive abnormal cell growth, and impair normal immune function, and hormones such as leptin that disrupt normal cell function.
Excess visceral fat also drives insulin resistance, raising circulating insulin and insulin-like growth factor levels, which promote cancer cell proliferation and survival.
A December 2025 study published in the Journal of the National Cancer Institute found that higher levels of visceral fat significantly increase liver cancer risk; affected individuals showed about four times higher odds of developing the disease.
“Insulin affects your inflammatory profile and your sex hormone profile. It is all like one big network. It’s one perfect storm,” Emma Hazelwood, a research associate in cancer evolution at the University of Cambridge’s Early Cancer Institute and lead author of the liver cancer study, told The Epoch Times.
“Liver fat increases your risk of liver cancer. That makes sense—the fat’s right there secreting pro-inflammatory cytokines.”
A 2021 study published in Nutrients confirmed that a pro-tumor microenvironment increases the risk of colorectal, pancreatic, liver, breast, endometrial, ovarian, and esophageal cancers, even in people with a normal body mass index. High visceral fat correlated with worse prognosis, higher recurrence, and increased mortality.
A 2023 study published in BMC Cancer found that higher visceral fat in endometrial cancer patients was linked to more aggressive tumors and worse progression-free survival, suggesting that the fat influences not just whether cancer develops but also how aggressively it behaves.
How to Target Visceral Fat
Because visceral fat is so metabolically active, it responds well to targeted lifestyle interventions.
Diet
“From a nutrition standpoint, reducing ultra-processed foods and added sugars helps lower inflammation and stabilize insulin, which is key for shrinking visceral fat,” Jennifer Scherer, a registered dietitian nutritionist and medical exercise specialist, told The Epoch Times in an email.
She suggested focusing meals on protein, produce, and whole-food carbs. Eating higher-fiber meals, getting adequate protein, and eating protein first and carbs last also help stabilize blood sugar and reduce visceral fat accumulation.
Clinical evidence supports low-carbohydrate approaches. A 2020 study published in Nutrition & Metabolism found that in adults with obesity, a very low-carbohydrate diet led to significantly greater total fat loss, particularly visceral fat, compared with a standard low-fat diet. Other research has shown that very low-carbohydrate, high-fat diets can also effectively reduce visceral fat.
Beltre recommends limiting processed foods and drinks, limiting trans and saturated fats, and increasing fiber and lean proteins.
Exercise
Physical activity is one of the most effective ways to burn visceral fat, even without significant weight loss.
“You don’t have to ‘spot reduce,’ but you can target visceral fat through training,” Scherer said.
Strength training improves insulin sensitivity and directly reduces visceral fat storage, whereas moderate-to-vigorous aerobic exercise enhances abdominal fat oxidation.
A 2023 systematic review published in Obesity Reviews found that regular exercise, including aerobic exercise, resistance training, and high-intensity interval training (HIIT), reduced visceral fat and improved body composition in people who were overweight or obese. Vigorous aerobic exercise and HIIT were most effective, while resistance training worked mainly in men and those with lower body fat percentages.
Even brief, consistent activity throughout the day can add up, making a tangible difference.
“Ten-minute ‘exercise snacks,’ brisk walking, or incline walking can move the needle,” Scherer said.
For practical, sustainable results, she recommends resistance training two to three times per week, combined with 7,000 to 10,000 steps daily or other consistent low-grade movement such as walking the dog or opting for the stairs over the elevator.
“Aerobic exercises like jogging, cycling, or swimming, at least 30 minutes per day, can be particularly beneficial,” Beltre said. “Lean muscle mass can increase resting metabolism and assist with fat burning throughout the day.”
The most effective approach combines the two strategies. A 2024 meta-analysis published in the Journal of the International Society of Sports Nutrition found that long-term interventions pairing diet and exercise were more effective at reducing visceral fat in adults who were overweight or obese than diet-only or exercise-only interventions.
Other Critical Factors
Sleep and stress management matter significantly.
“Not getting enough sleep and chronic stress can raise cortisol levels, which promote abdominal fat,” Beltre said.
He recommended meditation, yoga, and breathing exercises to help manage stress and reduce cortisol levels.
Limiting alcohol is critical. Scherer noted that it is one of the fastest ways to reduce visceral fat, as the liver prioritizes alcohol metabolism over the metabolism of fat stores.
Ultimately, because visceral fat can accumulate silently, a comprehensive approach that combines diet, exercise, and lifestyle strategies is key. Hidden fat poses a cancer risk even in people who appear healthy or aren’t visibly overweight, so the goal isn’t just lowering the number on the scale—it’s targeting the fat that matters.
Some practitioners advocate more radical dietary changes.
Amanda King, an integrative metabolic oncology nutritionist and naturopath, said: “What would happen to your health if you just gave yourself 30 days, cut out the grains, cut out the seed oils [and] have healthy animal-based protein, eggs, some oily fish, vegetables, a small amount of fruit, and lots and lots of healthy fats?”
Visceral fat typically begins to respond within three months of consistent lifestyle modifications, and it often shows results before significant changes appear on the scale.
“These [interventions] are the needle-movers that reduce visceral fat and—importantly—lower chronic inflammation,” Scherer said. “Which is one of the strongest links between abdominal fat and cancer risk.”