Pulmonary nodules have a variety of causes and can be benign or malignant. Patients should avoid eating cold, spicy and fatty foods in their daily life, and should avoid smoking and alcohol. It is also important to eat less sweets and avoid eating mouldy foods such as mouldy peanuts and corn. It is important to note that the causes of lung nodules and the severity of the condition can vary significantly from patient to patient, and that diet is only one part of the treatment of the disease. Your doctor will be able to advise you on the appropriate treatment plan for your particular case, as well as giving you sound dietary advice.