Is Human Saliva an Indicator of the Adverse Health Effects
of Using Mobile Phones?
Yaniv Hamzany,1 Raphael Feinmesser,1 Thomas Shpitzer,1 Aviram Mizrachi,1 Ohad Hilly,1 Roy Hod,1
Gideon Bahar,1 Irina Otradnov,2 Moshe Gavish,2 and Rafael M. Nagler2-4
Increasing use of mobile phones creates growing concerns regarding harmful effects of radiofrequency nonionizing
electromagnetic radiation on human tissues located close to the ear, where phones are commonly held
for long periods of time. We studied 20 subjects in the mobile-phone group who had a mean duration of mobile
phone use of 12.5 years (range 8-15) and a mean time use of 29.6 h per month (range 8-100). Deaf individuals
served as controls. We compared salivary outcomes (secretion, oxidative damage indices, flow rate, and composition)
between mobile phone users and nonusers. We report a significant increase in all salivary oxidative
stress indices studied in mobile phone users. Salivary flow, total protein, albumin, and amylase activity were
decreased in mobile phone users. These observations lead to the hypothesis that the use of mobile phones may
cause oxidative stress and modify salivary function. Antioxid. Redox Signal. 18, 622-627.
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