Idiopathic pulmonary fibrosis (IPF) is a chronic progressive disease of the lung tissue, rather frequently associated with an a unsatisfactory nutritional status manifested by weight loss, muscle wasting, followed by impaired exercise tolerance, descreased mobility and lung function, development of a nutritional deficiency and progressive worsening of the overall condition. The article is concerned with nutritional disorders and their diagnosis and treatment, specifically in patients with IPF.