The article concludes that meeting South East Asia s protein needs demands a dual focus on both quantity and quality, tailored to population-specific requirements and life stages. Sustainable solutions should leverage a mix of animal, plant, and novel protein sources, prioritizing local resources and innovations that enhance nutritional value and consumer acceptance. It cautions against simplistic shifts to plant-based diets, given persistent undernutrition and socioeconomic disparities, and stresses that future food policies and innovations must be guided by nutrient adequacy, environmental sustainability, safety, and cultural relevance to ensure robust and equitable improvements in regional nutrition.