Healthy is most commonly followed by for to show benefit. Other prepositions usually belong to separate phrases such as healthy in old age or healthy at birth.
Use healthy for to show benefit: healthy for children. Healthy in, healthy with, healthy at, and healthy by are possible in specific contexts, but they usually introduce separate ideas such as time, condition, or method rather than being fixed combinations with healthy.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
Use healthy for when something benefits a person, body part, or lifestyle.
In often introduces a time, place, or condition connected to being healthy.
With can introduce something accompanying the healthy condition.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
Use for when talking about health benefits.
✕ Milk is healthy to children. ✓ Milk is healthy for children.Some prepositions belong to time or manner phrases, not directly to healthy.
✓ He stayed healthy by exercising regularly.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Yes. It is the standard way to express health benefits.
Yes, especially when describing an accompanying quality or condition.
At usually refers to time, while by explains method or means.
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