Preventive Health 6 min read
The Silent Epidemic: Prediabetes in India and How to Reverse It
Dr. R. Brahmananda Reddy
6 April 2026
Knowledge Hub
Dr. R. Brahmananda Reddy
6 April 2026
India is often called the "diabetes capital of the world," but the real crisis is not the 77 million Indians with diagnosed diabetes — it is the estimated 136 million with prediabetes who do not know it. These individuals are walking a metabolic tightrope, and most have no idea.
Prediabetes is defined by fasting glucose between 100-125 mg/dL, HbA1c between 5.7-6.4%, or a 2-hour oral glucose tolerance test result between 140-199 mg/dL. But these thresholds, while useful, obscure a critical point: metabolic dysfunction begins long before these numbers are reached.
Several factors converge to make the Indian population uniquely susceptible to insulin resistance and prediabetes:
Genetic predisposition: South Asians develop insulin resistance at lower body weights and BMIs than other ethnic groups. The BMI threshold for metabolic risk in Indians is approximately 23 kg/m2 — well below the standard overweight cutoff of 25 used in Western guidelines.
Body composition: Indians tend to accumulate visceral fat disproportionately, even at lean body weights. This "metabolically obese, normal weight" phenotype is common and dangerous because it is invisible to standard assessment.
Dietary transition: The rapid shift from traditional diets (millets, legumes, vegetables) to refined rice, white bread, sugary beverages, and ultra-processed foods has overwhelmed metabolic systems not adapted to chronic glycemic loads.
Sedentary urbanization: Rapidly growing cities like Hyderabad have seen a dramatic decline in physical activity levels as walking gives way to commuting and manual labor gives way to desk work.
Here is the critically important news: prediabetes is fully reversible. The landmark Diabetes Prevention Program (DPP) trial demonstrated that lifestyle intervention — modest weight loss of 5-7% of body weight combined with 150 minutes of weekly exercise — reduced the progression from prediabetes to diabetes by 58%. In participants over 60, the reduction was 71%.
The Indian Diabetes Prevention Programme (IDPP) confirmed these findings in an Indian population, demonstrating that lifestyle intervention significantly reduced diabetes incidence even with less weight loss, suggesting that the metabolic benefits of exercise and dietary improvement extend beyond the scale.
Movement: Minimum 150 minutes per week of moderate-intensity activity, with emphasis on both aerobic exercise (Zone 2 training) and resistance training. Resistance training is particularly effective for improving insulin sensitivity through increased muscle glucose uptake.
Dietary modification: Reduce refined carbohydrates, increase fiber to 30+ grams per day, prioritize protein at every meal, and consider time-restricted eating. These changes collectively reduce glycemic variability and insulin demand.
Weight management: Even a 5% reduction in body weight can produce dramatic improvements in insulin sensitivity. For a 75 kg individual, that is less than 4 kg.
Sleep optimization: Poor sleep independently worsens insulin resistance. Achieving 7-8 hours of quality sleep is a metabolic intervention in its own right.
The reversal window is not infinite. Over time, chronic insulin resistance damages pancreatic beta cells — the cells that produce insulin. Once sufficient beta cell mass is lost, the progression to diabetes becomes much harder to reverse.
At GenoRyx, we identify prediabetes and early metabolic dysfunction using advanced markers including fasting insulin, HOMA-IR, and CGM data — catching the problem years before standard tests raise flags. Book a consultation to discover where you stand on the metabolic spectrum.
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UK-trained physician and founder of Genoryx. Writes about longevity medicine, healthspan optimization, and evidence-based wellness.
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