Evaluation of the Effect of an Specific Oral Nutritional Supplement on the Nutritional Status in Cancer and Malnutrition

Inclusion Criteria: * Men and women over 18 with a cancer diagnosis (any type). * Subjects who have initiated during the next mont a treatment with chemo and or radiotherapy with or without surgery. * Having lost more than 5% of body weight in the last 6 months. * Adequate cultural level and understanding for the clinical trial. * Signed informed consent. Exclusion Criteria: * Subjects who are participating in other clinical trials. * Subjects with morbid obesity. * Subjects who will undergo surgery or who will undergo. * Subjects with cachexia * Subjects with infection of a cause other than of the tumor * Subjects with an infectious process * Subjects with Diabetes Mellitus treated with insulin and/or not controlled * Subjects with kidney, heart, respiratory or liver disease. * Subjects with autoimmune diseases. * Subjects with mental illness or decrease function cognitive. * Subjects who consume oral supplements or artificial nutrition and who cannot be withdran at least 1 week before startint the study. * Patients who have consumed food supplements or fortified foods in omega 3 (arginine or nucleotides) during the previous month. * Patients who reject oral supplements. * Pregnant or breastfeeding women. * Allergic to any component of the formula