Apparently, talking on a cellphone for 60 minutes or more per day can result in a partial loss of hearing -- at least that's what some researchers in India are saying. The scientists conducted an experiment to test the correlation of hearing loss to the average use of a cellphone call. The experiment covered 100 participants with cellphone usage ranging from four years and over to just started using a cellphone. The results? Long-time users seemed to suffer some high-frequency hearing loss, usually in their right ears -- the ear most commonly used for chatting on the celly. There also seemed to be some correlation between warm, full, or ringing sensations in the ear, so if you're experiencing any of those, enjoy the stealth ringtone while you still can.