Which to use? Due to or Because of? Here are a few tips to keep you aligned with the latest style guides. Due to modifies nouns and is generally used after some form of the verb to be (is, are, was, were, etc.). Jan's success is due to talent and spunk (due to modifies success and introduces an adjective phrase and should modify nouns). Because of should modify verbs. It introduces an adverbial phrase. Ted resigned because of poor health (because of modifies resigned). He did not resign due to poor health.
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