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.

Summer can be difficult for the eyes, often in ways people do not immediately notice. Most of the attention during this season goes to drinking enough water, avoiding heat, and protecting the skin. Eye care usually comes much later, often only after discomfort begins. Long hours in the sun, dry surroundings, heat, and outdoor exposure can all leave the eyes feeling uneasy, especially over repeated days.

“During the summer season, we commonly see an increase in patients presenting with ocular surface discomfort, including dryness, itching, redness, burning sensation, and watering. Prolonged exposure to heat, ultraviolet radiation, dust, and air-conditioned environments can disturb the normal tear film and aggravate underlying allergic or dry eye conditions. In some cases, repeated eye rubbing and poor hygiene may also increase the risk of secondary irritation or infection. Timely preventive care and early attention to persistent symptoms are important to avoid worsening of these seasonal eye concerns,” says Dr Niteen Dedhia, Medical Director, Ojas Maxivision Super Specialty Eye Hospitals.

When heat and dehydration begin to show in your eyes

A common experience during summer is that the eyes simply do not feel as comfortable as they usually do. There may be a slight burning sensation, or the eyes may feel tired much earlier in the day, especially after being outdoors or spending hours in cooled indoor spaces. With the body losing fluids more quickly in hot weather, the eyes can also feel the effects. Many people do not immediately connect this discomfort to dehydration, but it plays a bigger role than expected. Added screen time indoors only makes this more noticeable.

Dust, sweat, and allergies adding to irritation

During summer, the eyes are exposed to many small everyday irritants. Dust on the roads, dry wind, pollution, and even sweat can all add to the discomfort. In some people, this shows up as itching, mild redness, or watering that keeps returning. Rubbing the eyes may feel like the easiest response, but it often makes the irritation worse. If this continues for days, even a minor problem can start feeling quite troublesome.

Sunlight and its hidden impact on eye comfort

Spending time in strong sunlight can be more exhausting for the eyes than most people realise. It is not just the brightness — by the end of the day, the eyes may feel heavy, watery, or unusually sensitive to light. Many people wear sunglasses, but not every pair is suitable for eye protection. Dark lenses may reduce glare, but that does not always mean they are blocking harmful rays. This is one reason discomfort can continue even when someone feels they have protected their eyes properly.

Small habits that make a noticeable difference

Managing summer eye discomfort does not require anything complicated. Staying well hydrated throughout the day helps more than most people expect. Using good-quality sunglasses, limiting time in the harsh afternoon sun, and simply rinsing the eyes after coming back from outside can ease a lot of irritation. Clean habits also matter in day-to-day care. Using your own towel, avoiding frequent hand contact with the eyes, and stepping away from screens occasionally can all help reduce strain and irritation.

Most people treat heartburn the way they treat a bad day: they reach for an antacid and move on. But for some patients, that familiar burning sensation is not just a digestive nuisance. It can be an early sign of something far more serious. A type of cancer called gastroesophageal junction (GEJ) adenocarcinoma develops quietly at the point where the food pipe meets the stomach, and it is frequently mistaken for routine acidity—until it is not.

Dr Ankit Jain, Senior Consultant, Medical Oncology, at Indraprastha Apollo Hospitals, in an interaction with Health and Me, spoke about the difference between cancer and heartburn symptoms.

What Is the Gastroesophageal Junction, and Why Does It Matter?

The gastroesophageal junction is simply the meeting point between the oesophagus and the stomach. When stomach acid repeatedly irritates this area over months or years, the lining can begin to change at a cellular level. This change, known as Barrett’s oesophagus, is a precancerous condition that often develops silently in people with chronic acid reflux. If left undetected, it can progress to GEJ adenocarcinoma. The tricky part is that this cancer does not behave exactly like oesophageal cancer or stomach cancer. It sits between the two, and that makes both diagnosis and treatment more nuanced.

Signs That Go Beyond Ordinary Heartburn

Heartburn is common across India, yet certain symptoms should not be brushed aside as routine acidity. If any of the following are present, a doctor’s visit should not be delayed:

1. Difficulty swallowing that starts with solid foods and gradually worsens
2. Unintended weight loss with no clear explanation
3. Chest or upper abdominal pain that does not improve with antacids
4. Unusual fatigue or anaemia, especially without another known cause
5. Blood in vomit or black, tarry stools

These are not panic triggers; they are signals worth investigating promptly.

The Case for Timely Screening

For patients over 40 with long-standing reflux, obesity, a smoking history, or a family history of upper digestive cancers, a baseline endoscopy is a reasonable and potentially life-saving step. GEJ adenocarcinoma caught early is far more treatable than the same cancer found at an advanced stage. The window for early detection exists, but it requires action before symptoms become severe. Persistent reflux deserves more than a repeat prescription. Sometimes, it deserves a closer look.

India is taking significant steps to enhance its vaccination strategy, with a special focus on adults, particularly those aged 55 and above, said Dr. N K Arora, Member of the National Technical Advisory Group on Immunisation in India (NTAGI), as part of the World Immunization Week.

NTAGI is the highest advisory body on immunization in the country, which consists of independent experts who provide recommendations on vaccines after reviewing data on disease burden, efficacy, and cost-effectiveness of vaccines.

In an exclusive interaction with HealthandMe, Dr. Arora shared that the country “is in the process of establishing priority pathogens and vaccines aimed at the adult population”.

This initiative will target those above the age of 55 or 60 to tackle infections that are particularly serious in older individuals, especially those living with chronic conditions like diabetes, hypertension, and cancer.

“The process has started. This year, we will be moving in that direction,” said Dr. Arora.

HPV Vaccination: A Milestone in Preventing Cervical Cancer

The expert lauded the introduction of the HPV vaccine for young girls. Dr. Arora highlighted the critical importance of this initiative, given India’s status as the country with the highest number of cervical cancer cases globally.

"Cervical cancer is preventable by the HPV vaccine, and we are now in the fortunate position of having a domestically manufactured vaccine," he explained.

The first round of vaccinations has already commenced, and Dr. Arora urged the media and public to dispel any misinformation surrounding the vaccine to ensure its success.

An Indigenous Dengue Vaccine

Further, the vaccine expert highlighted the potential introduction of an indigenous dengue vaccine, currently undergoing trials.

“The trials will take at least two and a half years, which means by the end of 28, we will have the results,” Dr. Arora said.

He emphasized the severity of dengue when it turns from a mild illness into a severe one, particularly among young adults.

The dengue vaccine, being developed indigenously, is expected to play a crucial role in protecting the 10-20 age group, who are most susceptible to severe dengue cases.

“We are waiting for the results of the trials, and once the vaccine is recommended by the NTAGI, the system will be ready to adopt it,” said Dr. Arora.

Also read: World Immunization Week: Vaccines Are Like Insurance, They’re Safe—Take Them, Says Dr NK Arora | Exclusive

India In The Forefront of Vaccine R&D

Dr. Arora stated that India, known as the pharmacy of the world, is playing a significant role in the global vaccine landscape.

“One feels very proud to be an Indian as every vaccine administered in India is made in India,” he said, noting that India also "provides two-thirds of the global vaccine supply".

This achievement positions India as a global leader in vaccine research and development, contributing substantially to global health initiatives.

"These initiatives are vital for the future of public health in India," Dr. Arora said.