It had impacts on...

If impact, the noun, means the effect, then there is nothing lame about impact, the verb, meaning to affect.

BTW, impact was a verb before it was a noun:

impact (n.)
1781, "collision," from impact (v.). Figurative sense of "forceful impression" is from 1817 (Coleridge).

impact (v.)
c.1600, "press closely into something," from L. impactus, pp. of impingere "to push into, dash against, thrust at". Originally sense preserved in impacted teeth (1876). Sense of "strike forcefully against something" first recorded 1916. Figurative sense of "have a forceful effect on" is from 1935.

1 vote Vote!  •  URL to this comment  •  Report Abuse

"Impacted" is something that happens to wisdom teeth. As a substitute for "affected", it is in vogue, but lame.

1 vote Vote!  •  URL to this comment  •  Report Abuse

For once I agree with JJMB. :-)

I would also avoid the use of impacted, but that's just my choice.

What's wrong with using "affect/affects/affected"?

0 vote Vote!  •  URL to this comment  •  Report Abuse

"Is it grammatically correct to say 'It had impacts on...'?"

Yes.

(Sounds pretty leaden though.)

1 vote Vote!  •  URL to this comment  •  Report Abuse

Would it be correct (...and simply more consise) to just say "It impacted...."

1 vote Vote!  •  URL to this comment  •  Report Abuse