A user manual for the human body, helpful for maintaining health from your 40s. In good condition, having been read only once. It has been handled by a person, so there may be some minor scratches. - Title: Newton Special Edition: A User Manual for the Human Body You Can Use Right Away, From Your 40s - Theme: Health and Medicine - Content: Explains changes in the body and mind related to aging - Target Age: 40s - Publisher: Newton - Language: Japanese Thank you for looking.