A French study published in December 2012 reveals significant decline in semen concentration and sperm quality within the French male population.
A sample of more than 26,000 men in France between 1989 and 2005 was studied. The results showed a continuous decrease in semen concentration of about 1.9% per year with a total decrease of a third (32.2%) over the 17-year study period, and a significant decrease in the percentage of sperms with morphologically normal forms. The projected semen concentration of a 35-year-old man went from 73.6 million/ml [69.0-78.4] in January 1989 to 49.9 million/ml [43.5-54.7] in December 2005. One of the largest studies conducted on this subject in the world, it confirms the results of past research showing a decrease in semen concentration worldwide. There are concerns that such a falling trend may affect couple fertility and average family size if not addressed. The authors believe that these observed trends in sperm parameters might be linked to the effects of environmental factors and lifestyle change.
Meanwhile, growing scientific evidence shows that wireless radiation from cell phones and other mobile devices may negatively affect human semen quality, which can lead to male fertility problems:
- A 2011 study by researchers from U.S. and Argentina shows that use of laptop computers connected to Internet through Wi-Fi decreases human sperm mobility and increases sperm DNA fragmentation. 
- A 2008 U.S. study by researchers from Cleveland Clinic Foundation of Ohio shows that use of cell phones decreases the semen quality in men by reducing the sperm count, motility, viability and normal morphology.
- A 2009 study by the same Ohio research team further shows that cell phone radiation leads to oxidative stress in human semen. The authors speculated that keeping a cell phone in a trouser pocket in talk mode may negatively impair male fertility. 
- A 2009 Australia study shows that cell phone radiation decreases the motility and vitality of exposed sperms and increases DNA fragmentation. The authors concluded that extensive cell phone use by male of reproductive age can potentially affect their fertility and the health and well-being of their offspring. 
- A 2007 Poland study shows that an increase in the percentage of sperm cells of abnormal morphology is associated with the duration of cell phone radiation exposure.
- A 2006 Turkey study shows that cell phone radiation influences human sperm motility, and long-term exposure may lead to behavioral or structural changes of the male sperm cells.
- A 2005 Hungary study shows that prolonged use of cell phones may have negative effects on the sperm motility characteristics.
All mobile devices emit electromagnetic radiation in the RF range when transmitting to cell towers or routers. A majority of the emitted radiation can be absorbed into user’s head and body. In May 2011, the World Health Organization (WHO) classified radio-frequency (RF) radiation from cell phones as “possibly carcinogenic to humans” (a possible cancer-causing agent).
Mobile device users can take preventive and proactive measures to reduce exposure to potentially harmful wireless radiation by adding a protective Pong case to your device. Pong’s patented technology is the world’s only solution proven by FCC-certified testing facilities to reduce users’ wireless radiation exposure by redirecting the radiation away from the user and redistributing it, while optimizing the mobile device’s signal strength.