The dementia information output system (10) according to one aspect of the present invention includes an acquisition unit (120) that acquires a body movement amount of a user (A) and a plurality of days in each of a plurality of time periods in which the body movement amount is plural. The determination unit (140) that determines the possibility that the user (A) has developed mild dementia or the like based on the degree of variation that is the degree of variation, and the possibility that the determination unit (140) has determined The output part (160) which outputs the dementia information which shows.本発明の一態様に係る認知症情報出力システム（１０）は、ユーザ（Ａ）の体動量を取得する取得部（１２０）と、体動量が複数の時間帯のそれぞれにおいて複数の日の間で変動している度合いである変動度に基づいて、ユーザ（Ａ）が軽度認知症等を発症している可能性を判定する判定部（１４０）と、判定部（１４０）で判定された可能性を示す認知症情報を出力する出力部（１６０）とを備える。
