Study of Docosahexanoic Acid in Patients With Cystic Fibrosis (CF)

Inclusion Criteria: * Male with confirmed diagnosis of Cystic Fibrosis with a sweat chloride \> 60 mmol/L and a pancreatic insufficiency. * Subjects will be aged between 6 and 18 years and be prepubescent, or aged between 18 and 30 years * Body weight \> 26 kg * Stable CF disease as judged by the investigator. * Subjects must have an Forced Expiratory Volume at one second \> 40 % of predicted normal for age, sex and height at the screening visit. * Subjects should not have enteral or parenteral nutrition. * No periodic IV lipidic emulsion administration. Subjects must not consume food supplements rich in OMEGA-3 on a regular basis. Exclusion Criteria: * Subjects with cirrhosis and portal hypertension. * Subjects with Cystic fibrosis related diabetes. * Concomitant participation in another clinical study. * Known allergy or intolerance to the active principle. * Subjects with major blood coagulation anomalies, patients under anticoagulants or aspirin (long term therapy). * Subjects on a transplant waiting list.