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

Tired of following multiple weight-loss diets and not seeing any results?

While many may recommend combining a strict, high-intensity workout routine with healthy food, Instagram-famous fitness trainer Tarn Kaur, who managed to lose nearly 40kg in less than a year, has revealed the 'weird' habits that helped her get back in shape instead.

Here is what the former lawyer, now online coach, recommends:

1. Keeping Treats Out Of Sight

Kaur noted in a lengthy Instagram post: "If I don’t see it, i don’t eat it. Hiding tempting foods has saved me from so many unnecessary snacks. out of sight, really, does mean out of mind."

2. Chewing Gum Like A Lifeline

The fitness expert revealed that she likes to eat a piece of mint after meals or whenever junk food cravings hit. "It’s like a little pause button for my brain and stops me from reaching for junk," she noted.

3. Planning Indulgences Ahead

In order to avoid binge eating or consuming excessive calories, Kaur logs her treats in an app even before she consumes them. She clarified that she likes to track her treats so as not restrict herself from eating but to 'take control and enjoy food without guilt'.

4. Checking If It's Worth It

Kaur explained: "If a food won’t give me pure satisfaction, I skip it. Life’s too short to feel bloated for something mediocre. My body deserves better." The trainer believes life is too short to feel bloated over something mediocre and feels her body deserves better.

5. Saying “I'm Full” Out Loud

Kaur mentioned that saying “I'm full” out loud helps signal her brain that she's done eating and prevents mindless bites when she's not paying attention.

6. Skipping Bread And Extras

Citing the phrase 'out of sight, out of mind', Kaur admitted that restaurants used to once be her downfall but now she steers clear from bread baskets and chips while dining out.

7. Portion Awareness With Clothing

The trainer also mentioned that she steers clear of comfy joggers as they often led to endless grazing for her, while fitted clothes served as a gentle reminder to respect portions and stay mindful of her body.

8. Throwing Away What Doesn't Serve You

Lastly, Kaur told her viewers that while leftovers tempt her, they do not align with her goals go straight into the bin. For her, it is not about guilt but about choosing herself first.

Apart from this, Kaur also recommends swapping traditional Indian tea with black coffee, white rice with cauliflower rice, packaged juices with electrolytes, fried snacks with baked veggie chips, sugary biscuits with almond flour cookies and white bread with wholegrain bread to maximize benefits.

Looking for a short daily exercise that can improve your heart health and make you live longer by about two decades?

In a podcast episode of The Diary Of A CEO, Dr Rhonda Patrick has claimed that the Norwegian 4x4 exercise, a cardio-focused intense workout, can help your heart become stronger and increase the body's oxygen-burning ability.

The scientist and health educator commented: "Everyone's obsessed with steps. I need to get my 10,000 steps in, my 10,000 steps. But I think we need to change the 10,000 steps to at least 10 minutes of vigorous intensity exercise.

"You could do 10 minutes of any type of exercise that's really going to get your heart rate up and it's going to be so much better."

What Is The Norwegian 4x4?

It involves performing four minutes of intense exercise at a 85 to 95 percent max heart rate, followed by three minutes of recovery. This type of HIIT exercise is meant to be repeated four times for maximum benefits.

While this style of working out can be applied to a variety of sports including cycling, swimming and rowing, Dr Patrick suggests using the 4x4 method while brisk walking and 'tailoring' it to your preference.

"I would say the Norwegian 4x4 is the gold standard. Specifically how I do that, I do my warm up and then I do four minutes of hard exercise. I take a break and the exercise I'm doing in those four minutes can be an assault bike. You can do a rowing machine. You could do a stationary cycling machine as well," she said.

When asked if running was a viable option, Dr Patrick added: "You can. I think it's better than doing like maybe a bike or a salt bike or something. And you are going as hard as you can for that four minutes and maintain within that four minutes."

READ MORE: This 2 Hour Activity Can Reduce Your Breast Cancer Risk, Study Shows

Not only can the 4x4 improve cardiovascular function by making the heart stronger, it can also increase the body's ability to use oxygen, a critical part of maintaining overall fitness as well as shows significant fitness gains in a short amount of time, making it ideal for busy schedules.

"You want to kind of work your way up that, but then work your way up as you as you do it one week, two weeks, you know, a month later, two months later. That being part of an exercise protocol was shown to reverse the structural changes that occur with age in the heart by 20 years," the expert added.

How Much You Should Exercise To Maintain Heart Health?

The American Health Association recommends performing at least 150 minutes per week of moderate-intensity aerobic activity such as brisk walking, dancing and gardening or 75 minutes per week of vigorous aerobic activity, such as hiking, running, cycling or and playing tennis or a combination of both, preferably spread throughout the week to maintain heart health.

Moreover, regular exercise can also reduce the risk of Type 2 diabetes, high blood pressure, dementia and Alzheimer’s, several types of cancer. It can also help improve sleep, cognition, including memory, attention and processing speed.

Dr Hayes recommends opting for a cardiac evaluation such as an electrocardiogram, or EKG; stress test; a cardiac MRI or CT scan to generate images of your heart if you notice changes in your ability to exercise or cannot perform consistent levels of exercise.

Playing sports as a teenager may reduce your risk of breast cancer in the future, a Breast Cancer Research study shows.

Researchers from New York, US and Toronto, UK have discovered that young girls who play sports, whether organized such as dance and football or unorganized for at least two hours in a week showed lower breast water content, which can stop the growth of cancerous cells and prevent cell damage.

Rebecca Kehm, Assistant Professor of Epidemiology at Columbia Mailman School of Public Health. noted of the results: “The importance and urgency of this research are underscored by the rising incidence of breast cancer in young women and the alarmingly low levels of recreational physical activity observed both in this study and among adolescents globally.

Also Read: Scabies Cases Rise Across The UK This Winter: Know The Early Symptoms

“Our findings suggest that recreational physical activity is associated with breast tissue composition and stress biomarker changes in adolescent girls, independent of body fat, which could have important implications for breast cancer risk.

The scientists also found that teenage girls around the age of 16 who were involved in physical activity has low oxidative stress in their urine, indicating that their body has a healthy balance between free radicals (unstable molecules) and antioxidants.

Why Is Low Breast Water Content Good For You?

In adult women, about 50 percent of the mass in normal breast tissues is made of water. Multiple previous studies have shown that cancerous breast tumors contain 1.6 times more water and significantly low fat than healthy levels.

This can lead to increased cellular hydration in the breast which can pave the way for excessive cell division, alters tissue structure and can impact metabolism, making water a key factor in tumor characteristics and progression.

Read More: India Loses A Woman To Breast Cancer Every Eight Minutes

Additionally, excessive breast water content also changes the tissue's physical properties which can lead to swelling which can increase breast size by more than a cup size, a feeling of fullness, tightness, heaviness, skin thickening, or a "peau d'orange" (orange peel) appearance.

Low water content acts as an indicator of low breast density and oxidative stress-related biomarkers in the urine, which signals a healthy amount of antioxidants in the body and cell growth as well as death is occurring at a normal, healthy rate.

Is Breast Cancer On The Rise In India?

One factor that sets India apart is the age at which women are affected. Almost half of all breast cancer patients in the country are younger than 45. This is a much higher proportion than seen in many Western nations, where the disease is usually detected later in life.

Moreover, sedentary habits, excessive consumption of processed foods as well as alcohol and smoking promotes obesity and hormonal changes which pave the way for breast cancer development.

The researchers noted in the study that they are yet to conclude how playing sports can reduce breast water content and oxidative stress.