By Dr. Varun Suryadevara
Endocrinologist, Diabetologist & Lifestyle Specialist
World Obesity Day was observed on 4th March, bringing renewed attention to a growing public health challenge—one that India can no longer afford to underestimate.
According to the World Obesity Atlas 2026, India now ranks second globally for children living with overweight and obesity, behind only China. In 2025 alone, nearly 15 million children aged 5–9 and more than 26 million adolescents aged 10–19 in India were reported to be overweight or obese. Projections suggest that by 2040, around 20 million Indian children may be living with obesity, while 56 million could be overweight. (Ref: Indian Express)
The trajectory is steep, and the implications are long-term.
This discussion is not about appearance. It is about pathophysiology.
As an endocrinologist, I view obesity through a metabolic lens. Adipose tissue is not passive storage—it is hormonally active, inflammatory, and deeply intertwined with insulin regulation, vascular integrity, and organ function. When body weight crosses certain thresholds, the internal biochemical environment begins to shift unfavourably.
If your BMI is 25 or higher in India, you are not “slightly heavy.” You are already in a risk category.
Indian Cut-offs: Lower Threshold, Higher Risk
Population-specific data matter. In Western definitions, obesity is often labelled at a BMI of 30 kg/m². For Indians, however, metabolic complications begin much earlier, largely due to higher visceral fat deposition at lower BMIs.
Indian BMI thresholds:
• BMI ≥ 23 kg/m² – Overweight
• BMI ≥ 25 kg/m² – Obesity
At a BMI of 25, cardiometabolic risk begins to accelerate—particularly insulin resistance, dyslipidaemia, fatty liver disease, and hypertension. Many patients sitting in my clinic are surprised to learn they have crossed into medical obesity, while still believing their weight is “manageable.”
That misunderstanding delays intervention.
Weight Reduction Is a Survival Strategy
Large pooled analyses led by researchers from the University of Oxford (Ref: Science Daily), examining data from close to one million adults, demonstrate a consistent association between excess weight and reduced life expectancy.
Encouragingly, even modest, sustained weight reduction correlates with significant reductions in premature mortality and cardiovascular events.
A 5–10% reduction in body weight alone can produce measurable metabolic improvements:
• Better glycaemic control
• Improved lipid profiles
• Reduced inflammatory markers
This is risk recalibration, not cosmetic adjustment.
Obesity: Often the First Clinical Signal
In most cases I evaluate, obesity is not the final diagnosis—it is the first visible marker of metabolic strain.
Left unaddressed, it frequently progresses to:
• Type 2 diabetes
• Hypertension
• Obstructive sleep apnoea
• Polycystic ovarian syndrome (PCOS)
• Atherosclerotic cardiovascular disease
By the time these conditions are detected, metabolic dysfunction has often been present for years. Early recognition allows prevention rather than damage control.
Why It Happens
There are genuine medical causes—hypothyroidism, Cushing’s syndrome, genetic predispositions, and medication effects. These must always be evaluated clinically.
However, in urban India, the dominant drivers remain environmental and behavioural:
• High caloric density diets
• Ultra-processed foods
• Sedentary lifestyles
• Chronic stress and sleep disruption
When caloric intake consistently exceeds expenditure, adipose tissue expands. Visceral fat accumulation, which is particularly common in South Asians, disproportionately increases insulin resistance and cardiovascular risk.
In a society already burdened by pollution, metabolic stress, and high psychosocial load, additional adiposity compounds systemic strain.
The Family Ecosystem
Long-term weight management rarely succeeds in isolation. Dietary patterns are household patterns.
If calorie-dense, refined foods are routine at home, expecting a single individual to maintain caloric restriction becomes operationally unrealistic.
Structured family-based lifestyle modification—meal planning, grocery discipline, and integrating physical activity into daily routines—dramatically improves adherence and outcomes. Sustainable change requires environmental alignment.
Pharmacotherapy: Precision, Not Trend
The recent visibility of anti-obesity medications on social media has created the perception that pharmacological weight loss is simple and universally applicable. It is neither.
Professional bodies, including the Indian Council of Medical Research (ICMR), recommend that anti-obesity medications be initiated only after comprehensive clinical assessment, BMI stratification, evaluation of comorbidities, and structured counselling.
These therapies require:
• In-person medical examination
• Defined eligibility criteria
• Monitoring for side effects
• Integration with diet and physical activity protocols
Prescription without evaluation is unsafe. Obesity treatment is strategic endocrine management—not an online transaction.
The Right Kind of Panic
Panic, in this context, means activation.
It means recognising that excess weight is a biological signal demanding investigation. It means scheduling a metabolic assessment rather than postponing it. It means measuring BMI, waist circumference, fasting glucose, HbA1c, lipid profile, and thyroid function—and acting on the findings.
Ignoring obesity normalises progression. Addressing it interrupts disease pathways.
If your BMI is 25 or above, this is not a time for casual reassurance. It is a time for informed, structured medical intervention. The earlier the correction, the greater the reversibility.
Obesity is not a matter of aesthetics. It is a clinical diagnosis with systemic consequences.
The question is not whether you should be concerned.
The question is whether you will act before the complications do.
