BMI has been the benchmark in evaluating health and fitness for many years. The formula is quite simple: weight in kilograms divided by the square of height in meters. This would easily tell if one is underweight, within the healthy weight range, overweight, or obese. But with new research findings, scientists are now questioning its accuracy and usefulness as a total measure of body composition.

The report, published in The Lancet Diabetes & Endocrinology, has sparked a global conversation on rethinking BMI. Supported by more than 50 international medical experts, the report suggests classifying obesity into "clinical" and "pre-clinical" types for better diagnosis and treatment. The shift underscores a growing consensus: BMI alone may not tell the full story of your health.

While BMI is simple to calculate and universally accessible, it is far from perfect. It does not consider muscle mass, bone density, or fat distribution, leading to misleading conclusions in some cases. For example, athletes with a high muscle mass may be considered overweight, whereas individuals with normal BMI might carry unhealthy amounts of visceral fat.

A landmark study in JAMA Network Open studied more than 155,000 postmenopausal women and found that women with a normal BMI but a waist size over 35 inches were more likely to die from heart disease or cancer compared with their counterparts whose waists are smaller. That makes a great case for how BMI can be insufficient and fat distribution must be factored into account.

Not all body fat is equal. Subcutaneous fat, which lies just beneath the skin, is relatively harmless. The real health danger lies in visceral fat—fat that surrounds internal organs. Unlike subcutaneous fat, visceral fat is metabolically active, releasing stress hormones like cortisol and inflammatory substances that raise blood pressure, blood sugar, and cholesterol levels. These effects significantly increase the risk of conditions such as heart disease, type 2 diabetes, and certain cancers.

BMI Isn't Always the Best Measure of Body Composition — Here's What to Use Instead

Since BMI is not the most reliable measure, scientists and doctors have sought other means to measure body composition more accurately.

1. Waist Circumference

A simple tape measure can provide valuable insight into your health. Measure your waist at the level of your belly button, ensuring the tape is parallel to the ground. For women, a waist measurement under 35 inches is considered healthy, while for men, the goal is under 40 inches.

2. Waist-to-Hip Ratio

This is the ratio of your waist circumference to that of your hips. To calculate it, divide your waist measurement by your hip measurement. According to the National Center for Biotechnology Information, a ratio under 0.8 for women and 0.9 for men is considered healthy.

3. Body Roundness Index (BRI)

A newer method that seems to be receiving more attention involves the Body Roundness Index or BRI: height, weight, and girth are placed together to represent a more advanced view of what body composition says. Research presented in JAMA Network Open offers evidence that this BRI predicts mortality risk greater than BMI in some cases- a promising weapon for public health.

Also Read: Using BMI To Classify People As Obese Is Flawed Say Experts

Ways To Cut Off Unhealthy Fat

The good news is that visceral fat responds well to lifestyle changes. Here are three evidence-based strategies:

Time-Restricted Eating

Adopting an eating window of 12 hours—such as from 7 a.m. to 7 p.m.—can significantly reduce visceral fat, according to a study published in Nutrition Research Reviews. This approach not only helps control caloric intake but also reduces late-night snacking, a known risk factor for abdominal obesity.

Limit Alcohol Intake

Excessive alcohol consumption is associated with increased belly fat. A 2017 study published in Public Health Nutrition revealed that alcohol increases the levels of insulin and encourages the storage of fat in the abdominal area. Limiting alcohol to occasional indulgence helps avoid weight gain in this region.

High-Intensity Interval Training (HIIT)

HIIT involves repeated episodes of high-intensity exercise separated by periods of rest. A review in *Sports Medicine* concluded that HIIT is very effective in reducing visceral and total body fat. It can be noted that adding just 20 minutes of HIIT two times a week can make all the difference.

The reliance on BMI as a sole indicator of health is increasingly being challenged. While it remains a convenient screening tool, its limitations necessitate a broader approach that considers factors like fat distribution, waist circumference, and new metrics such as BRI.

In the simplest of words, health is multi-dimensional, and shifting perspectives from considering weight solely to broader measures of body composition will get people a much clearer understanding of where their health risks are so that they can take the action required for a better quality of life. Through adjustment to diet, exercise, or perhaps through innovative metrics like BRI, health is well within reach of the individual.

This dynamic conversation raises the point about personalized health screenings, which helps everyone get more relevant tools fitting their unique lives and circumstances. As body composition research is enhanced, so do the futures look brighter and brighter for the times of measurement when it comes to health.

Definition and diagnostic criteria of clinical obesity. The Lancet Diabetes & Endocrinology.

Association of Normal-Weight Central Obesity With All-Cause and Cause-Specific Mortality Among Postmenopausal Women. JAMA Netw Open. 2019

Waist-Hip Ratio. NIH.

Physiological responses to food intake throughout the day. Nutr Res Rev. 2014

Association between abdominal obesity and alcohol drinking pattern in normal-weight, middle-aged adults. Public Health Nutr. 2017

Cortisol is one of the body's most powerful hormones, which is essential for survival, yet capable of quietly undermining health when chronically elevated. The line between beneficial training stress and harmful overload is thinner than most athletes realize, and the body's early warning signals are easy to dismiss.

Understanding how cortisol responds to exercise and when that response tips from adaptive to destructive is foundational to training smarter, recovering better, and protecting long-term health.

Why Cortisol Matters

Cortisol is a vital, life-sustaining hormone essential for survival and adaptation. During physical exertion, it ensures the immediate mobilization of energy by triggering the breakdown of stored carbohydrates and fats (gluconeogenesis and lipolysis) to fuel working muscles. Additionally, it maintains vascular integrity and acts as a powerful anti-inflammatory agent, safely modulating the immune system to protect the body against extreme inflammation caused by exercise-induced tissue damage.

When Exercise Becomes Stress

Exercise is naturally an acute stressor, but it transitions into a harmful chronic stress when training loads exceed the body's ability to recover. High-intensity, prolonged aerobic exercise or extreme high-volume resistance training, combined with inadequate rest, sleep disruption, and external stressors, keeps the hypothalamic-pituitary-adrenal (HPA) axis constantly activated. When the natural 24-hour cycle of cortisol is disrupted and if the body does not get a long enough period of low cortisol exposure, exercise transitions from a positive adaptation (eustress) into destructive physiological strain.

Beyond Stress: How Excess Cortisol Reshapes the Body

The physical remodeling that chronic cortisol causes is profound and operates at the molecular level. Protein degradation occurs through activation of the ubiquitin–proteasome system. Cortisol further suppresses anabolic pathways by inhibiting mTOR signaling and reducing insulin-like growth factor 1 activity, leading to a sustained decrease in protein synthesis.

Visceral fat cells, the deep abdominal fat surrounding internal organs, have more cortisol receptors than fat cells elsewhere in the body. When cortisol levels remain elevated, these receptors essentially attract and store more fat in the midsection.

While Ozempic or Wegovy offer weight loss benefits, a significant caveat is the risk of regaining the kilos. This is not only a waste of money and effort but may also affect overall health.

About 70 per cent of people who stop these drugs eventually regain much of the weight they lost, often within 18 months.

Now, US researchers have developed a new minimally invasive procedure that resets the gut, and in early trials, has shown potential to help people maintain weight loss after stopping these popular drugs, which contain semaglutide — a GLP-1 receptor agonist — as the main ingredient.

Presenting the research at the Digestive Disease Week (DDW) 2026, the team noted that the procedure works by renewing the lining of the upper small intestine. It potentially “resets” metabolism and helps preserve the benefits of weight loss.

The technique is called duodenal mucosal resurfacing. In a clinical trial, people who underwent the procedure regained far less weight compared to others after discontinuing the medication.

"Finding a treatment that allows patients to stop these medications without weight regain or loss of metabolic benefit is a huge unmet need," said lead author Shelby Sullivan, director of the Endoscopic Bariatric and Metabolic Program at Dartmouth Health Weight Center and professor of medicine.

"These findings indicate that this minimally invasive procedure may provide lasting weight-loss maintenance."

How The Procedure Works

Duodenal mucosal resurfacing is an investigational endoscopic treatment that uses controlled heat to remove damaged tissue from the inner lining of the duodenum, the first section of the small intestine just below the stomach.

This process, which ablates the unhealthy mucosal layer, encourages the growth of new, healthier tissue.

The treatment targets the small intestine, where many of the hormones affected by GLP-1 drugs are produced. Over time, diets high in fat and sugar can alter the lining of the duodenum, changing how the body processes food and regulates hormones. These changes can contribute to insulin resistance and metabolic disease.

By restoring a healthier mucosal layer, the procedure aims to reset the body's response to food, helping to stabilize metabolism at a lower body weight after stopping medications like Ozempic.

How Was The Study Conducted?

The findings are based on an early group of participants with six months of follow-up data. Among 45 people in this cohort, 29 received the resurfacing treatment while 16 underwent a sham procedure.

All participants had previously lost at least 15 per cent of their body weight using tirzepatide before stopping the drug. On average, patients lost about 40 pounds while on GLP-1 therapy. Six months after discontinuing the medication, those in the control group regained significantly more weight. Participants who received the sham procedure regained about 40 per cent more weight than those who underwent the actual treatment.

In addition, patients who had more extensive resurfacing regained only about 7 pounds and kept more than 80 per cent of their weight loss.

By comparison, the control group regained roughly twice as much. The gap between the two groups continued to widen from one to six months after the procedure, suggesting the benefits may persist and even strengthen over time.

"What's particularly encouraging is that the benefit appears to increase over time rather than fade, and that it behaves like a drug in terms of dose response," Dr. Sullivan said. "That gives us confidence that we're targeting the right biology."

No serious complications were reported from either the device or the procedure. Recovery is relatively quick, with most patients returning to normal activities within about a day.

At a time when most people follow a sedentary lifestyle, exercise is nothing short of medicine. However, for someone who is lazy, workouts can take a good deal of effort — but what if we told you that there are some simple exercises that will not take much of your time and can be done easily while lying flat on your back? According to experts, without having to lift a finger, you can get in shape.

Best workouts to do in bed

Researchers at Teikyo University in Tokyo, Japan, found that people can improve their agility, balance, and flexibility by engaging in a simple exercise programme that involves three exercises. These exercises engage the leg muscles and core in an easy and safe position. Writing in the journal PLOS One, the study authors compared the routine to Pilates, and experts said that it can help prevent falls and support early rehabilitation.

Adults are recommended to do two and a half hours of exercise each week, but about a third of people do not meet this target. In this study, 39 healthy men and women in their 20s, with optimal flexibility, balance, speed, and strength, were involved. They were all tested before and after a two-week regimen of lying down and working out. The exercises they were asked to perform were:

1. Tense the abs for five seconds while pressing them with the fingers—repeat three times
2. Lifting the hips off the ground to form a bridge pose, keeping the feet flat on the ground—hold for five seconds and repeat 10 times
3. Bending one leg at the knee and holding the ankle at 90 degrees, clenching and unclenching the toes; ensure that the heel slides along the floor towards and away from the body—repeat three times with each leg

Fifteen days later, participants showed significant improvement in standing balance, flexibility, and agility. However, they did not show improvement in raw muscle strength, jumping ability, or grip strength tests. Scientists said that these improvements were likely due to better muscle control rather than increased muscle mass. They also noted that no prior research has shown an exercise programme that is short and performed in a supine position to be effective in this way. However, this routine, which showed improvements in flexibility, agility, balance, and stability, shows promise. It could also be helpful for rehabilitation in older adults.

What is exercise snacking?

Exercise snacking refers to an approach created for people who struggle to find time for long gym sessions. Instead of spending hours at the gym, people can perform small bursts of exercise throughout the day. These sessions are an effective way to stay active without needing to block out time specifically for fitness. They can be spread across the day, with mini workouts lasting five to 10 minutes and repeated multiple times. The benefits are significant when practised consistently, especially for those with desk jobs or those suffering from diabetes, hypertension, high cholesterol, or even depression.