PROBLEM TO BE SOLVED: To make a proposal for improvement of a lifestyle in a manner more suitable for a user's situation. A lifestyle-related improvement proposal device acquires measured biological information of a first user or lifestyle-related information representing the lifestyle of a first user, and when the acquired information satisfies a predetermined condition. A message suggesting an improvement in lifestyle is sent to a user device used by a predetermined user. In addition, a data acquisition unit that further acquires environmental information regarding the environment in which the first user is located or the behavior of the first user, and a message generated according to the environmental information and transmitted to the user device, or according to the environmental information It has a proposal generation unit that stops sending messages. [Selection diagram] Fig. 2【課題】生活習慣の改善の提案を、よりユーザの状況に応じた態様で行う。【解決手段】生活習慣改善提案装置は、測定された第１のユーザの生体情報又は第１のユーザの生活習慣を表す生活習慣情報を取得し、取得した情報が所定の条件を満たす場合に、所定のユーザが使用するユーザ装置に生活習慣の改善を提案するメッセージを送信する。また、第１のユーザが所在する環境又は第１のユーザの行動に関する環境情報をさらに取得するデータ取得部と、環境情報に応じてメッセージを生成しユーザ装置へ送信する、又は環境情報に応じてメッセージの送信を中止する、提案生成部とを備える。【選択図】図２
