Before modern medical testing, people often monitored their health through simple observation. In parts of Europe, shelf toilets were designed with a flat platform that allowed users to inspect stool before flushing, helping identify signs of issues such as blood, parasites, or unusual changes.
As plumbing improved and hygiene standards evolved, toilets that quickly removed waste became more popular because they reduced odors, splashing, and cleaning needs. As a result, shelf toilets became less common.
However, they still exist in some older European homes and public buildings. Although they may surprise modern visitors, these toilets reflect past medical practices and show how everyday designs evolve with changing knowledge, technology, and ideas about cleanliness.