NEW YORK – The city wants young New Yorkers to hear its latest public-health warning loud and clear: Cranked-up earphones can be hazardous to your hearing.

So much so that the city is planning a $250,000 social media and marketing campaign to warn teens that they risk hearing loss from listening to personal music players at high volume, health officials said Wednesday.

It’s the latest in a slate of efforts on Mayor Michael Bloomberg’s watch to urge New Yorkers to eschew unhealthy habits, from smoking to drinking large amounts of sugary soda. The prodding has sometimes included graphic ads, such as an online video of a man pouring himself a soda that turns into a glass of glop made to look like fat and an ad featuring a close-up of a smoker’s gangrenous toes.

It’s not yet clear how the city will deliver its hearing-loss messages, which will aim “to better inform and educate New Yorkers about ways to protect hearing from exposure to loud sounds,” particularly long and loud listening sessions on music devices with earphones, the Health Department said.