Clinical Research Directory

Inclusion Criteria: * Patients with colorectal cancer that will undergo elective surgery * Patients diagnosed with non-oncological disease with an indication for elective surgery. * Age ≥ 18 years * Histology proven adenocarcinoma or adenoma with or without chemotherapy or neoadjuvant radiochemotherapy * Tumoral stage equal or grater than T1 * Attempt to R0 resection * Signed informed consent by the patient and by the researcher * Dietary Questionnaire completed Exclusion Criteria: * Colorectal tumor with different histology to adenocarcinoma or adenoma * History of colorectal cancer surgery different to the local excision * Patients with psychiatric illness, addiction or disorder with inability to understand informed consent * Inability to read or understand any of the languages of the informed consent and questionnaires (Catalan, spanish) * Another synchronous malignancy * Emergency Surgery * Any patient that medical characteristics present an individual risk raised to be included and complete the study * Severe kidney or liver disease * Systemic disease with inflammatory activity, such as rheumatoid arthritis, Crohn's disease, asthma, chronic infection (HIV,TBC). * Pregnancy and lactation * Severe disorder of eating behaviour * Clinical symptoms and sings of infection in the previous month * Antibiotic, antifungal and antiviral treatment for the last 3 months * Anti-inflammatory chronic treatment * Major psychiatric antecedents * Excessive alcohol intake or drug abuse