‘Eat healthily’ vs. ‘eat healthy’ in English

by Jakub Marian

Tip: See my list of the Most Common Mistakes in English. It will teach you how to avoid mis­takes with com­mas, pre­pos­i­tions, ir­reg­u­lar verbs, and much more (PDF Version).

When you want to express that the manner in which you eat is healthy, you can do so using the adverb “healthily”:

You’re fat as a pig. You should eat more healthily.

However, it is becoming extremely widespread to use the adjective “healthy” also as an adverb, so it is not uncommon to hear “eat healthy”, especially in American English:

Didn’t your doctor tell you it is important to eat healthy?

Traditional grammarians say that “eating healthy” is wrong, but considering that there are dozens of books on Amazon that contain “Eat healthy!” even in their titles, I believe you can safely use it without being worried you are saying something unnatural.

Nevertheless, major English dictionaries don’t list adverbial “healthy” as an acceptable alternative to “healthily”, so it is advisable to avoid it in any kind of formal writing and English tests.

By the way, if you haven’t read my guide on how to avoid the most common mistakes in English, make sure to check it out; it deals with similar topics.

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