Relationship between cell phone use and testicular cancer

   Based on incidence data, there is no convincing evidence of increased risk of testicular cancer from cell phone use, according to a report by researchers at Cooper University Hospital in Camden, N.J.

   Because of the ubiquitous usage of cellphones, any health consequences, if found, would be of paramount importance. Many have questioned the relationship of cellphone radiofrequency waves and malignancies such as brain tumors because of where users hold the devices while talking. The researchers investigated a possible relationship between cell phone usage and testicular cancer due to the practice of many men of carrying them in their pockets. 

   Using data from 1999 to 2008 from the National Cancer Institute and other sources, the researchers calculated trends over time as annual percentage change of incidence rates (APC) by using log linear models. Rates of cell phone subscriptions increased exponentially since the late 1990s, reaching 88.87% of the population by 2008. There was found no statistically significant change in incidence rates of all testicular tumors (APC 0.7; confidence interval [CI], -0.2 to 0.7); seminoma (APC 0.2; CI, 0.8 to 1.1); and non-seminoma (APC 1.4; CI, -0.6 to 3.4) from 1999 to 2008. According to the researchers, in their age-specific analysis three groups showed an increase in incidence rates: all testicular cancer age 25-34 (APC 2; CI, 0.6 to 3.4); all testicular cancer age >45 (APC 1.7; CI, 0.1 to 3.3); and seminoma age 25-34 (APC 2.1; CI, 0.6 to 3.7). The researchers noted that “All these changes were only minor percentage increase when compared to mobile subscriptions.”