The nutritional guideline provides recommendations for the nutritional management of COPD patients. Its objectives are to raise awareness of nutrition among respiratory healthcare professionals, provide a simple tool for first-line nutritional management, and improve the nutritional status of COPD patients. It recommends screening patients for nutritional status using BMI and asking questions about appetite, weight changes, diet, and body shape. Based on the screening, healthcare professionals can identify a patient's position on the guideline and take appropriate action such as monitoring weight, discussing diet, or prescribing supplements.