Questions & Answers about Mental helse er viktig for alle.
In Norwegian, helse can be used like an uncountable, abstract noun, just like health in English.
- Mental helse er viktig.
= Mental health is important. (no article in either language)
You would only use an article (en/ei) if you were talking about a specific, countable instance of health, which is rare:
- Helsen min er dårlig. = My health is bad. (definite form with -en)
For general statements about health as a concept, Norwegian normally uses the bare noun: helse, not en helse.
You’re right that most native Norwegian adjectives take an -e ending in front of an indefinite plural noun or a definite noun (and sometimes after a possessive).
However, mental here is a loanword adjective and part of a kind of fixed phrase. In modern usage:
- mental helse is the standard, set expression
- mentale helse is possible in some contexts, but sounds less idiomatic in this specific phrase
Think of mental here almost like the first part of a compound noun, similar to:
- fysisk helse (physical health)
- psykisk helse (mental/psychological health – actually more common than mental helse)
So while adjective agreement is a real rule, set phrases and some loanwords can behave a bit differently. The natural choice is mental helse.