I would definitely agree with your assessment regarding the complexity of the human body as well as of cancer and its treatment. At M.D. Anderson, we view the role of nutrition in the cancer process as a supportive one: we aim to provide recommendations to help support the body itself, to help fight the cancer, and to help manage nutrition-related side effects of treatments as best we are able. I believe, and scientific literature would agree, that nutrition is a vital component to overall health and to health during and beyond cancer; however, it is only one of many pieces in the proverbial puzzle. There are plenty of data (more accumulating even as I type this) to support the necessity of nutrition as part of optimal cancer care, and our dietitians are committed to providing the most up-to-date and patient-directed recommendations we can to help our patients through the cancer journey.