Questions & Answers about Seksuell helse er viktig.
- seksuell = sexual
- helse = health
- er = is / are
- viktig = important
So the structure is very close to English: Sexual health is important.
Norwegian often leaves out the article with general or abstract ideas, just like English does in sentences such as Health is important.
Here, seksuell helse means sexual health in a general sense, not a sexual health or the sexual health.
Compare:
- Seksuell helse er viktig. = Sexual health is important.
- Den seksuelle helsen er viktig. = The sexual health is important / Sexual health is important in a more specific, definite sense
In everyday usage, the article-less version sounds natural when speaking generally.