We've all wondered about the possible long term hearing effects of iPod use, but it turns out that's not the only device we have to worry about.
Researchers at the Post Graduate Institute of Medical Education and Research in Chandigarh, India, announced that people who talk on a cell phone for more than an hour a day were found to have suffered losses of high-frequency hearing. How bad is it? The hearing loss actually results in an inability to hear consonants such as s, f, t and z, reports CBS.
The study also found that mobile phone users who had symptoms such as "a warm sensation, fullness in the ears, or ringing were more likely to have the high-frequency hearing loss," so if you feel any of those things it might be time to cut back on your calls.