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.

Holding urine occasionally, such as during a long meeting or traffic jam, is generally not harmful for most healthy adults. However, repeatedly delaying urination for extended periods may affect urinary health, particularly in people who are prone to urinary tract infections (UTIs) or have existing bladder problems.

What Happens When You Hold Urine for Too Long?

When urine remains in the bladder for too long, it can become uncomfortable and may contribute to bladder overdistension. In some individuals, particularly those with underlying urinary retention or bladder dysfunction, regularly postponing urination may worsen existing problems.

While holding urine does not directly cause a UTI in every case, incomplete bladder emptying can increase the risk of infection.

Also read: Are People With CKD At Higher Risk Of Dementia And Cognitive Problems?

Why You Should Not Reduce Water Intake to Avoid Bathroom Break

People who work long hours or commute frequently should try to respond to the urge to urinate rather than routinely suppressing it.

Maintaining adequate hydration is equally important, as deliberately drinking less water to avoid bathroom breaks can lead to concentrated urine and may increase the risk of certain urinary problems like concentrated urine leading to crystallization and stone formation.

When Should You Seek Medical Advice?

If you experience persistent urgency, burning during urination, lower abdominal discomfort, difficulty passing urine or blood in the urine, seek medical advice. Developing regular bathroom habits and ensuring convenient access to washrooms can help support long-term urinary health.

It is also important to recognise when urinary symptoms may indicate a more serious problem. Inability to pass urine despite a strong urge, particularly when accompanied by severe lower abdominal pain or swelling, requires urgent medical attention.

Fever, chills or pain in the back or side alongside urinary symptoms may indicate a kidney infection and should be assessed promptly. Avoid assuming that such symptoms are simply the result of holding urine for too long.

By Dr. Vikram Kalra, Principal Director - Nephrology and Kidney Transplant, Aakash Healthcare Multi Speciality Hospital, Dwarka

Menopause brings several changes to a woman’s body, and the breasts are no exception. As levels of oestrogen and other hormones decline, the glandular tissue in the breasts gradually decreases and is replaced by fatty tissue. This can change how the breasts look and feel.

For many women, breasts may become softer, less firm or change slightly in size and shape after menopause. Loss of skin elasticity with age can also contribute to changes in breast shape.

These changes can be a normal part of aging. But not every breast change after menopause should be attributed to hormones.

What breast changes can happen after menopause?

The hormonal changes associated with menopause can alter the composition of breast tissue. Some women may notice that their breasts feel softer or less dense than they did before menopause. Changes in skin elasticity can also lead to sagging or a gradual change in breast shape.

These changes, by themselves, are generally not a cause for alarm.

The concern arises when a new, unusual or persistent change appears, particularly if it is different from what a woman has experienced before.

Also read: Could A Daily Pill Help Prevent Breast Cancer Recurrence? Roche's Promising Experimental Drug Awaits FDA Approval

Which breast changes should not be ignored?

After menopause, women should speak to a doctor if they notice:

• A new change in the size or shape of one breast
• A new lump or area of thickening in the breast
• Persistent swelling in the breast
• Dimpling, puckering or thickening of the breast skin
• A newly inverted or retracted nipple
• Unusual nipple discharge, particularly if it contains blood
• A change in the appearance of the nipple or areola
• A new lump or swelling in the armpit or near the collarbone

These signs do not necessarily mean that cancer is present. Several benign breast conditions can cause similar changes. However, they should not be self-diagnosed or automatically dismissed as a consequence of menopause.

What about breast pain?

Breast pain is commonly caused by benign conditions and, before menopause, may also be associated with hormonal fluctuations. After menopause, persistent or unexplained breast pain should nevertheless be discussed with a doctor, particularly if it occurs alongside another breast change.

It is also important to remember that the absence of pain does not rule out breast cancer. Many breast cancers do not cause pain, and some may not produce a lump that can be felt.

This is one reason women should not wait for pain or a clearly palpable lump before seeking medical advice when they notice something unusual.

Is breast cancer screening necessary after menopause?

Screening remains an important part of breast health after menopause, but the appropriate approach depends on factors such as age, family history, personal medical history and individual risk.

Women should discuss screening with their healthcare provider and follow recommendations appropriate to their age and risk profile. Every woman should also learn how to perform a self-breast examination and become familiar with the normal look and feel of her breasts. Regular self-examination can help women notice new or unusual changes early and seek medical advice promptly.

Self-breast examination should complement, rather than replace, recommended screening and clinical evaluation. If a woman notices a new lump, skin change, nipple change or any other unusual finding, she should consult a doctor even if her routine screening is due later.

Those with a strong family history of breast or ovarian cancer, or a known genetic predisposition to breast cancer, may require a different or more intensive screening strategy.

Importantly, screening is intended for women who do not have symptoms. If a woman notices a new breast change, she should not simply wait for her next routine screening appointment; she should discuss the change with a doctor.

Also read: Breast Cancer: Are Women in India Being Diagnosed Too Late?

Don't blame every change on menopause

Menopause is a natural stage of life, but it should not become an explanation for every new symptom.

Most breast changes are not cancerous. However, the only way to determine the cause of a persistent or suspicious change is through appropriate medical evaluation.

Women should become familiar with how their breasts normally look and feel and pay attention to changes that are new or unusual for them.

Breast health does not become less important after menopause. In fact, continuing to pay attention to changes, practising regular self-breast examination and staying up to date with appropriate screening can help detect problems early.

The message is not to fear every change, but to avoid ignoring one simply because menopause has begun. When something feels or looks different, getting it checked is always better than assuming it is “just menopause.”

By Dr. Tapti Sen, Sr. Consultant ,Breast Surgery, RG Stone Urology & Laparoscopy Hospital, Kolkata

Many women notice changes in their breasts, such as localised tenderness, an itchy nipple or a slight pulling of the skin. These changes are often caused by benign conditions, including hormonal changes, irritation or infection.

Breast cancer does not always present as a painless lump, however. It can sometimes appear in less typical ways, and recognising persistent or unexplained changes can help people seek timely assessment.

India’s breast cancer burden

GLOBOCAN 2022 estimates recorded 192,020 new breast cancer cases and 98,337 deaths in India in 2022. These estimates placed India third globally for the number of new cases and first for the absolute number of deaths. These are estimates for 2022, not current annual counts.

Changes in skin, shape and nipple

A tumour can involve the breast’s supporting fibrous structures and surrounding tissues, causing skin tethering, dimpling or a new change in breast shape or symmetry. Any new, unexplained change deserves clinical assessment.

Changes in the nipple also deserve attention. A nipple that newly flattens, turns inward or deviates to one side should be assessed. Spontaneous discharge from one nipple—particularly bloody or clear discharge—can be a warning sign, although it is not always caused by cancer. Persistent itching, burning, flaking or eczema-like crusting of the nipple may be associated with Paget’s disease of the breast, a rare malignancy involving the nipple–areola complex that is often associated with an underlying breast carcinoma.

Unexplained swelling or persistent lumps in the armpit or above the collarbone can sometimes be an early sign of breast cancer. These findings also have non-cancerous causes and need assessment rather than self-diagnosis.

Also read: Why Peak Incidence For Breast Cancer In India Occurs Between Ages 40–50, Compared To 60–70 In The US & Europe

Pain, redness and swelling

Breast cancer can be painful, even though pain alone is not a reliable way to tell whether a change is cancerous. A painful lump should not be ignored, and a painless lump should not be assumed to be harmless.

Inflammatory breast cancer can be particularly difficult to recognise. It may cause rapid breast enlargement, heaviness, redness, warmth and swelling, sometimes without a distinct lump. The skin may develop a pitted appearance resembling orange peel. Because these symptoms can resemble mastitis or other skin conditions, infection may initially be suspected. However, persistent or worsening redness and swelling, especially when symptoms do not improve as expected with treatment, require prompt reassessment and investigation for an underlying malignancy.

How the diagnosis is confirmed

Any persistent or suspicious breast change warrants clinical assessment. Depending on the person’s age and symptoms, evaluation may include diagnostic mammography and targeted ultrasound. Further imaging or biopsy may be needed when indicated. A suspicious finding should not be dismissed solely because initial imaging is reassuring.

Persistent or suspicious nipple and skin changes require timely specialist assessment. If Paget’s disease or another malignancy is suspected, biopsy may be necessary without a trial of topical treatment. Suspected inflammatory breast cancer requires prompt imaging and tissue diagnosis; a skin punch biopsy may also be indicated.

Also read: Breast Cancer in Young Women: What You Should Know

Common causes of delay

People may delay seeking help because they expect a symptom to become painful, hope it will go away, or assume that redness or itching is due to irritation. Breast symptoms other than a lump can also be associated with longer diagnostic journeys. The length of delay varies between individuals and healthcare settings, so precise comparisons should be interpreted in the context of the study and the interval it measures.

Repeatedly treating persistent skin redness or nipple crusting with antibiotics, moisturisers or steroid ointments without reassessment can delay appropriate investigation. Treatment may be reasonable when infection or a skin condition is suspected, but symptoms that persist, recur or worsen need further evaluation.

When to seek medical advice

A new breast lump, unexplained skin dimpling, new nipple inversion, spontaneous bloody discharge, or persistent redness and swelling warrants prompt medical assessment. Unexplained fullness or swelling in the armpit or above the collarbone should also be checked. Most breast changes are benign, but symptoms should not be ignored or self-treated indefinitely. A healthcare professional can decide whether imaging, biopsy or other investigations are needed.

Early assessment can improve the chance of diagnosing breast cancer at a treatable stage. In general, breast cancer diagnosed while localised has a better prognosis than disease that has spread to distant parts of the body, although outcomes also depend on tumour biology, treatment, and other clinical factors.

By Dr. Arun Kumar Sharma, Consultant, Surgical Oncology, Fortis Hospital Jalandhar