The short answer: white noise is better noise. At least for (some) sleepers. White noise, if you're using the technical definition, is a consistent noise that comes out evenly across all hearable frequencies. White noise is just an equal amount at every frequency, from low to high, that a human being can hear.
Similarly, you may ask, can white noise make you sick?
Absolutely. It's well known that acute loud noises can damage hearing, interfere with your sleep, raise blood pressure and stress levels and cause headaches. But constant, low-level noise can cause problems as well. You might be able to solve your “white noise” problem with noise-canceling headphones.
Which colored noise is best for sleeping?
When it comes right down to it, the color of noise that will help you sleep most soundly is the one you like the best. While pink and Brown noise are deeper and more balanced than white noise, your personal sleep preferences will dictate which one gives you the best night's sleep.
Can listening to white noise damage your hearing?
Yes, some sounds can damage your child or baby's hearing, but there's no need to throw out the sound machine. Unless that thing cranks out at 120 decibels. Decibels that are too loud or listened to for too long or too closely can bend or break these hair cells. This can result in temporary or permanent hearing loss.