How to say "hygiene" in Japanese

Choosing the right word
  • 保健ほけんJLPT N2approx.Common
    nounCovers hygiene in the sense of preserving and maintaining health, as in health promotion and public health. It focuses on keeping people healthy rather than on cleanliness itself.
    WHOとは世界せかい保健ほけん機構きこうを表あらわす。↗
    WHO stands for World Health Organization.
  • 衛生えいせいJLPT N1approx.Common
    nounCovers hygiene as cleanliness and sanitation, such as personal or food hygiene. This is usually the word you want when hygiene means keeping things clean to prevent disease.
    彼かれは衛生えいせい監視員かんしいんである。↗
    He is a sanitary inspector.

Use 衛生 for hygiene as cleanliness and sanitation practices, and 保健 for hygiene in the sense of health preservation and maintenance; the two overlap in public-health contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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