You are assigned to a client who was recently diagnosed with lung cancer. Surgery is planned, followed by chemotherapy. Your client says that he has heard that large doses of vitamin C would...

You are assigned to a client who was recently diagnosed with lung cancer. Surgery is planned, followed by chemotherapy. Your client says that he has heard that large doses of vitamin C would contribute to postoperative healing and also would enhance chemotherapy. He asks if he should begin megadoses of vitamin C. How should you respond?