Relationship of Nutritional Status to Chemotherapy Treatment Completion and Outcomes in Cancer Patients

Inclusion Criteria: * Subject or subject's legally acceptable representative (LAR) has voluntarily signed and dated an ICF approved by an IEC, or any other applicable privacy authorization prior to any participation in the study. * Ambulatory and inpatient subject. * Subject recently (within the last month) or newly diagnosed to have metastatic or non-metastatic gastric, colon and lung cancer. * Subject is recently receiving chemotherapy or recently prescribed to begin chemotherapy treatment per standard of care (within the last month) or candidates who will receive chemotherapy. * Subject has a life expectancy greater than 6 months. Exclusion Criteria: * Subject has known dementia, brain metastases, eating disorders, history of significant neurological or psychiatric disorder, any other psychological condition, serious illness or medical condition that may interfere with study completion. * Subject has malignant tumors other than treated DCIS, fully treated non-melanoma skin cancer, curatively resected in-situ cervical cancer or other curative treated tumors (except stomach, colon and lung cancer) for \> 5 years. * Subject has bone marrow metastasis. * Subject is lactating. * Subject is participating in another study that has not been approved as a concomitant study.