South Asia face one of the world's most complex public health challenges: the Double Burden of Malnutrition (DBM). This paradox is defined by the coexistence of two seemingly opposite problems: persistent rates of undernutrition (stunting, wasting, protein deficiency) alongside rapidly increasing rates of overnutrition (obesity and Type 2 Diabetes) (Source S1). For policymakers, food security experts, and public health agencies, treating these as two separate issues is no longer viable. The common thread—and the most cost-effective solution—is Protein Quality and Access.

The Protein Paradox in the South Asian Diet
Traditional South Asian diets are often structurally high in carbohydrates (cereals like rice, wheat, and maize account for a significant portion of total protein intake) and low in complete protein sources. This combination creates unique metabolic challenges:

1. Fueling Deficiency: In low-income communities, the necessity of buying cheap, caloric staples leads to protein deficiency and micronutrient gaps, driving stunting and wasting (Source S1).
2. Fuelling Disease: In urban and affluent communities, a genetic predisposition to Insulin Resistance among South Asians means that high consumption of refined carbohydrates and low-quality protein rapidly fuels the epidemic of Type 2 Diabetes and associated cardiometabolic risk (Source S3).

Research confirms that protein intake in South Asia is often below optimal levels, while carbohydrate intake is among the world's highest. Modeling suggests that raising protein intake is a vital strategy for mitigating Type 2 Diabetes risk in this high-risk population (Source S2).

The Mandate for Protein-Centric Policy

To tackle the DBM effectively, policy interventions must be dual-purpose: addressing both affordability and quality.

• Elevate Quality in Staples: Public health programs must prioritize access to affordable, high-quality protein sources like eggs, legumes, fish, and dairy. In many regional contexts, animal-source proteins are often deemed too expensive for regular consumption, highlighting the need for strategic subsidies or community farming programs.
• Mitigate Lifestyle Risk: Education and food policy must shift the focus from merely reducing calories to achieving a healthier macronutrient balance. This includes advocating for reduced consumption of refined grains and sugars and increasing the consumption of protein to improve satiety and metabolic health.
• Strategic Fortification: For immediate impact, fortification efforts must ensure that essential nutrients and high-quality protein components are included in widely consumed, affordable products.

Protein is the crucial component that strengthens the immunity of the vulnerable child and stabilizes the metabolism of the at-risk adult. By prioritizing protein access and quality, we address the root causes of both undernutrition and overnutrition, building a healthier, more resilient populace across the region.

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• Forouhi, N. G. (2022). Nutrition and Type 2 diabetes: Computational optimization modeling to expand the evidence base for South Asians. Diabetes Care, 45(12), 2811–2813. https://doi.org/10.2337/dci22-0033
• Times of India. (2025). 60% of South Asians have this hidden metabolic problem and most don't know about it. https://timesofindia.indiatimes.com/life-style/health-fitness/60-of-south-asians-have-this-hidden-metabolic-problem-and-most-dont-know-about-it/articleshow/125100479.cms
• Winichagoon, P., & Margetts, B. M. (2017). The double burden of malnutrition in low- and middle-income countries. In I. Romieu, L. Dossus, & W. C. Willett (Eds.), Energy balance and obesity. International Agency for Research on Cancer. https://www.ncbi.nlm.nih.gov/books/NBK565820/