Listening to your favourite tunes through headphones could make it much harder to hear when you get older. It might not seem surprising, but scientists say listening to loud music for as little as an hour a day could damage your hearing within five years. So how loud is too loud? They say a good guide is that if someone else can hear your music leaking out of your headphones, it’s time to turn it down. They also advise checking to see if you can set a volume limit on your player.