Marcus Welby, M.D. S01 E05 All Flags Flying

Rick Ballinger is an aging war hero determined to sail alone to the South Pacific. Dr. Welby discovers that Ballinger has pernicious anemia, and warn the captain that such a voyage would prove fatal. Ballinger, however, goes ahead with his plan, since it is essential to him to maintain an heroic facade to impress his son and his young wife.