Subjective Global Assessment (SGA) is a clinical tool used to assess the nutritional status of individuals, particularly those with chronic conditions. It involves a comprehensive evaluation based on the patient’s history, physical exam, and laboratory data. The SGA score ranges from A (well-nourished) to C (severely malnourished) and provides a subjective assessment of the patient’s dietary intake, weight loss, and overall health status. It is commonly used in conjunction with other objective measures to monitor nutritional status and guide treatment plans for malnutrition.