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

For years, people trying to lose weight have been told that slow and steady is the safest and most sustainable approach. But a new study is challenging that long-standing advice.

Researchers found that losing weight more quickly may actually lead to greater weight loss that can be maintained over time.

The findings, presented at the European Congress on Obesity 2026, followed 284 adults with obesity, around 90% of whom were women. Researchers compared a rapid weight-loss method with a more gradual approach.

What Did The Study Find?

During the first 16 weeks, participants in the rapid weight-loss group followed a low-calorie diet that started below 1,000 calories a day and gradually increased to around 1,500 calories. The gradual-loss group consumed approximately 1,400 calories a day.

Those in the rapid-loss group lost an average of 12.9% of their body weight during the first 16 weeks, compared with 8.1% among those following the gradual approach. But the researchers were particularly interested in what happened after the initial weight-loss phase.

Both groups subsequently entered a 36-week weight-maintenance program, receiving regular support and guidance on maintaining healthy eating habits.

After one year, the rapid-loss group had still lost more weight overall, averaging 14.4% of their starting body weight, compared with 10.5% in the gradual-loss group.

Also read: Meniscus Tears: Why Runners & Athletes Shouldn't Ignore This Common Knee Injury

Does This Mean Fast Weight Loss Is Better?

The study challenges the idea that rapid weight loss automatically leads to weight regain. It does not mean people should drastically cut back calories or attempt crash diets.

HealthandMe spoke to Dr Rajiv Kovil, Diabetes & Obesity Specialist, S L Raheja Hospital, to understand which approach is truly sustainable for long-term weight loss.

He says, “Scientifically, this reinforces an important concept: the speed of initial weight loss and the sustainability of weight loss are not necessarily opposites. Larger early weight loss may provide metabolic benefits, improve mobility and motivation, and give patients a greater “weight-loss buffer” before biological pressures favouring regain become prominent.”

One of the most important details is that the rapid-loss programme was structured and professionally supervised, with consistent support after the initial weight-loss period.

He further explains, “This was rapid, medically structured weight loss—not unsupervised crash dieting. Participants received continued behavioural and weight-regain-prevention support. Moreover, the results are currently reported from a conference presentation rather than a fully peer-reviewed publication, and body-composition and energy-expenditure data were not reported.”

Dr Kovil goes on to say that truly sustainable weight loss should never revolve around the number of kilograms lost.

He said, “The message therefore is not “faster is always better.” It is that obesity treatment should move away from an arbitrary obsession with the rate of kilograms lost.”

Dr Marie Spreckley of the University of Cambridge said the study involved an intensive intervention with frequent professional support, meaning the results may not necessarily translate to unsupervised dieting in everyday life.

Dr Dimitrios Koutoukidis of the University of Oxford also cautioned that the study was based on limited data from a conference abstract and mostly involved women.

Also read: Walking Becomes Harder With Age Not Just Due To Weaker Muscles; Study Says Your Ankles May Be To Blame Too

Why Slow Weight Loss Has Been Recommended?

The traditional argument is that gradual weight loss is easier to maintain and may reduce the risk of losing muscle or encourage weight regain.

But experts say the new findings suggest the speed of weight loss itself may not be the main factor determining whether weight comes back. What may matter more is what happens after the weight comes off.

Dr Adam Collins of the University of Surrey noted that metabolic adaptation and reductions in lean mass appear to relate more closely to the total amount of weight lost than simply how quickly it was lost.

Dr Kovil concludes, “In obesity medicine, the real endpoint is not how slowly you lose weight—it is how safely you lose fat, preserve muscle and maintain the metabolic benefit. Sustainability is determined less by the speed of weight loss and more by the quality and continuity of long-term treatment.”

If there is something common to active individuals, then it is the habit of downplaying knee pain as "just a strain." Runners complete races despite feeling some discomfort, weekend football enthusiasts freeze their knees and return to the game, while fitness lovers believe that the pain will go away after a few days of rest.

Sometimes the pain fades away. Yet sometimes it remains, showing signs of a meniscus tear, one of the most common knee injuries among active individuals.

What Is A Meniscus Tear?

The meniscus is a semi lunar ‘C’ shaped fibrocartilage structure that acts as a shock absorber between the thigh bone and the shin bone. The meniscus cushions the knee and stabilizes the joint every time the person runs, jumps, squats, or turns.

In case of awkward knee twisting (especially when the foot is firmly pressed to the ground), the meniscus can be torn. Such injury can be often found in sports such as football, basketball, tennis, and badminton, as well as among leisure runners.

Also read: Walking Becomes Harder With Age Not Just Due To Weaker Muscles; Study Says Your Ankles May Be To Blame Too

What Happens If You Keep Running On A Torn Meniscus?

Many people mistakenly believe that a meniscus tear is always accompanied by severe pain. In reality, many people will continue running or playing after the injury as the symptoms are manageable at first. Patients may experience swelling within the same day, pain when going up the stairs, or experiencing the knee catching or being unable to completely straighten. These are the red flags that should be addressed, and not ignored.

Disregarding any of these symptoms can be detrimental. Continuing to stress the damaged knee may lead to aggravating the tear and putting more strain on the adjacent cartilage, thus increasing chances of developing early osteoarthritis. The sooner the injury is diagnosed, the higher chances a person receives help with preserving the meniscus, which is extremely important for the knee function for many years.

Also read: What Is Zone 2 Cardio? The Workout Everyone Is Talking About

Does Every Meniscus Tear Need Surgery?

Treatment performed in each case is not identical. Minor tears may be treated with physiotherapy, modification of a person’s lifestyle, and specific exercises aimed at making the muscles supporting the knee stronger. Severe tears or ones that cause recurrent locking or instability of the joint require certain surgical intervention like arthroscopic repair or balancing.

Probably, the most disregarded part of the process of healing is rehabilitation. Pain can go away before the knee gets its strength back, and that is the reason for many athletes getting injured again. A systematic return to activity helps to promote optimal healing for the knee.

When Should Athletes Seek Medical Advice?

If you are someone who likes to run or play sport, knee pain should never be an issue that becomes accepted. Often your body can let you know when there is something wrong. Paying attention to those early signs and being quick to seek medical advice can mean the situation can be managed properly.

By Dr. Attique Vasdev, Vice Chairman, Orthopaedics, Medanta Gurugram

Walking may feel slower, harder and more tiring as we get older, but scientists say the reason could be more than simply losing muscle strength.

New research has found that ageing changes the way the ankle and surrounding muscles work during every step, causing the body to prioritise stability over walking efficiency. It may help older adults stay upright, but it also means walking requires more effort and produces less forward movement.

The study, led by researchers from Flinders University and the University of Canberra, analysed movement data from 107 healthy adults aged 26 to 86. The findings were published in Gait & Posture.

What Changes In The Body as You Age?

One of the key changes that happens in the body as we age are around the ankles. Researchers found that older adults are more likely to activate opposing muscles around the ankle at the same time, a phenomenon called co-contraction. This makes the ankle joint stiffer when the foot hits the ground.

That stiffness can provide greater stability, essentially helping the body feel more secure with every step. But it could have an adverse effect.

“As we get older, the body starts to favor stability over efficiency,” said lead author Dr Cody Lindsay, a sport and exercise technology expert at Flinders University. “That helps keep us upright, but it also makes walking more of an effort.”

Also read: What Is Zone 2 Cardio? The Workout Everyone Is Talking About

Walking Become Slower As We Age

The researchers also found that older participants generated less push-off power with each step. The push-off phase is the moment your foot pushes against the ground to propel your body forward.

When that push becomes weaker, the body travels less distance with each stride. This results in shorter steps, slower walking speeds and more fatigue.

The nervous system appears to be partly responsible for this change. Rather than maximising speed and energy efficiency, it adopts what researchers describe as a “safety-first” strategy that favours stability and control.

Associate Professor Maarten Immink, co-author of the study, said this may also make it harder for older adults to recover from trips or slips, potentially increasing the risk of falls.

Also read: One Bad Landing Can Change Everything: Avoid These Common Knee Injury Mistakes

The findings help explain why an older person may feel increasingly tired after walking a distance that once felt easy.

It may not simply be that their muscles have become weaker. The entire movement strategy changes as we age.

The body is effectively spending more muscular effort to maintain stability while getting less forward movement from each step. It reveals an important biological behaviour that surfaces due to aging.

This can also affect confidence and independence. Researchers say people may notice that they tire more quickly or feel less steady, especially while when walking on uneven surfaces.

Exercise May Help

The researchers say maintaining mobility may require more than traditional strength training. Exercises that challenge balance, coordination and lower-leg strength could help the body maintain better movement control as it ages.

Dr Lindsay recommends regular physical activity, balance exercises such as tai chi, lower-leg strengthening and activities that challenge coordination.

“Staying active is one of the most important things people can do,” he said, adding that consistent exercise could help people remain mobile and independent for longer.