The Story of Menstruation is a 1946 10-minute animated film produced by Walt Disney Productions in 1946.
It was commissioned by the International Cello-Cotton Company (now Kimberly-Clark) and was shown to approximately 105 million American students in health education classes.
It was one of the first commercially sponsored films to be distributed to high schools. It was distributed with a booklet for teachers and students called Very Personally Yours that featured advertising of the Kotex brand of products, and discouraged the use of tampons, where the market was dominated by the Tampax brand of rivals Procter & Gamble.
The Story of Menstruation is believed to be the first film to use the word vagina in its screenplay. Neither sexuality nor reproduction is mentioned in the film, and an emphasis on sanitation makes it, as Disney historian Jim Korkis has suggested: “a hygienic crisis rather than a maturation event.”