Health problems and hearing loss from cellphone and iPod use have been heavily debated ever since portable devices became a part of our everyday lives. The thing is, studies showing a correlation between use and hearing loss go back and forth. Sometimes they tell us cell phones cause hearing loss [1], other times they tell us use right before bed is bad, but otherwise we are OK [2] and occasionally they tell us not to worry.

Scientists have noted that cellphone users who were on the phone for 60 or more minutes per day over a yearlong period showed early signs of hearing loss. According to this month's Shape magazine [3] experts believe the problem comes from cellular receivers, which are louder than regular phone handsets. Do you worry about and pay attention to your cell phone's volume?