This evidence-based nursing care plan for Imbalanced Nutrition: Less Than Body Requirements (NANDA-I) integrates ASPEN/ESPEN guidelines and Cochrane evidence to manage malnutrition risks. Includes validated screening tools (MST/GLIM), SMART goals (25–30 kcal/kg/day intake), and nurse-led interventions like small frequent meals, appetite stimulants (per NCCN), and culturally adapted nutrition education. Prioritizes interprofessional collaboration (dietitians, pharmacists, social workers) and refeeding syndrome monitoring (NICE protocols). Tracks nutritional outcomes via EHR documentation, weekly weights, and prealbumin trends. Adaptable to acute care (ERAS protocols), community settings (SNAP/WIC referrals), and long-term care (IDDSI dysphagia strategies). Complies with Joint Commission, HIPAA, and WHO standards to reduce readmissions and improve patient safety.