Just like anything to do with your health, healthy habits at a young age are very important to a lifetime of healthy hearing. As portable music players have become a bigger part of our lives the side effects of the earbuds and headphones may have a lasting impact on your hearing. Check out this article from cnn.com that highlights a World Health Organization study on hearing habits:

https://www.cnn.com/2015/03/06/health/hearing-loss-loud-music/