WHY DID JAPAN INTRODUCE SEX EDUCATION?
Japan developed formal sex education primarily to provide young people with accurate knowledge about puberty, reproduction, health, relationships, and personal responsibility.
After World War II, Japan initially introduced what was known as “purity education,” partly in response to social and public-health concerns. From the 1960s onward, education increasingly addressed biological development and sexual health. By the late 1970s, broader psychological and social aspects were incorporated.
The main educational purposes include:
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Understanding puberty and physical development
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Learning about reproductive health
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Preventing sexually transmitted infections
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Understanding pregnancy and contraception
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Promoting respect, consent, and personal boundaries
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Developing responsible decision-making
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Reducing misinformation and harmful sexual behavior
Japan's Ministry of Education has historically emphasized age-appropriate scientific knowledge together with respect for others and healthy attitudes toward relationships.
Modern comprehensive sexuality education is not intended to encourage sexual activity. The World Health Organization states that high-quality, age-appropriate sexuality education can improve knowledge, support safer decisions, and reduce sexual risk-taking.
Conclusion: Japan's development of sex education can be understood primarily as a public-health and educational response: helping young people understand their bodies, protect their health, respect others, and make informed and responsible decisions.