Cell Phone Radiation Damages Sperm, Studies Show

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Phones Carried on Belt or in Pants Pocket May Harm Reproductive Health
Although most scientific and public attention on the issue of the safety of cell phone radiation has focused on evidence suggesting an increased risk of brain tumors (Baan 2011), a little-noticed but growing body of research points to a new concern – sperm damage (La Vignera 2012).
In a comprehensive review of the published scientific literature, the Environmental Working Group found 10 human studies that have identified a startling variety of changes in sperm exposed to cell phone radiation. In the most striking findings, men who carried their phones in a pocket or on the belt were more likely to have lower sperm counts and/or more inactive or less mobile sperm. These findings accord with similar results in laboratory animals.
Collectively, the research indicates that exposure to cell phone radiation may lead to decreases in sperm count, sperm motility and vitality, as well as increases in indicators of sperm damage such as higher levels of reactive oxygen species (chemically reactive molecules containing oxygen), oxidative stress, DNA damage and changes in sperm morphology (see summary below).
Many men who talk on a cell phone using a Bluetooth device or other headset keep the phone in a pants pocket or clipped to a holster. This exposes their reproductive organs to cell phone radiation, and several studies have found lower sperm count and/or poorer sperm quality in men who use their phones this way than in those who do not.
Scientists have yet to identify a mechanism by which cell phone use might cause such effects (Makker 2009). However, the research appears to rule out the possibility that the changes are caused by simple heating, which is considered to be a possible source of some radiofrequency radiation-related health problems (De Iuliis 2009; Volkow 2011).
The findings are particularly significant in light of the fact that infertility affects approximately 15 percent of couples of reproductive age, and nearly half of these cases are linked to male fertility (Sharlip 2002). The number and consistency of the findings raise the possibility that cell phone radiation could be contributing to this significant public health problem and demand further investigation.
Studies linking cell phone exposure to harmful effects on sperm have been done in the United States, Australia, Austria, Hungary, Poland, Turkey and South Africa, using diverse methodologies. In some, scientists compared sperm counts and sperm health in men who wore cell phones on the hip with those who carried them elsewhere on the body or did not use cell phones at all. In others, researchers exposed sperm to cell phone radiation under laboratory conditions. In still others, scientists examined whether there was a correlation between sperm health and the intensity of cell phone use among men undergoing evaluation for infertility.
Among the findings:
Men who carried a phone in a hip pocket or on the belt had 11 percent fewer mobile sperm than men who kept a phone elsewhere on the body (Kilgallon 2005).
Men who carried a cell phone on the belt and used it intensively during a five-day test period had a 19 percent drop in highly motile sperm from their previous levels (Davoudi 2002).
Men who talked on the phone for more than an hour a day had 17 percent fewer highly motile sperm than men who talked less than 15 minutes a day (Fejes 2005).
Laboratory studies on the effects of cell phone radiation on rats, rabbits and other animals have found similar effects on reproductive health (Kesari 2011; Mailankot 2009).
All these studies found statistically significant correlations between cell phone radiation and sperm health, and many found that the adverse changes increased with the amount of radiation exposure. Opinions differ as to the possible mechanism by which cell phone radiation might produce these changes (Falzone 2010).
A number of research papers include unambiguous statements on the potential of cell phone radiation to affect men’s reproductive health:
“Keeping the cell phone in a trouser pocket in talk mode may negatively affect spermatozoa and impair male fertility” (Agarwal 2009).
“Use of cell phones decreases the semen quality in men by decreasing the sperm count, motility, viability and normal morphology. The decrease in sperm parameters was dependent on the duration of daily exposure to cell phones and independent of the initial semen quality” (Agarwal 2008).
“These findings have clear implications for the safety of extensive mobile phone use by males of reproductive age, potentially affecting both their fertility and the health and wellbeing of their offspring” (De Iuliis 2009).
“Overall, these findings raise a number of related health policy and patient management issues that deserve our immediate attention. Specifically, we recommend that men of reproductive age who engage in high levels of mobile phone use do not keep their phones in receiving mode below waist level” (De Iuliis 2009).
“Our results showed that cell phone use negatively affects sperm quality in men… Men with poor sperm quality planning for pregnancy should be advised not to use cell phones extensively” (Gutschi 2011).
“The results show that human spermatozoa exposed to RF-EMR have decreased motility, morphometric abnormalities and increased oxidative stress, whereas men using mobile phones have decreased sperm concentration, motility…, normal morphology, and viability. These abnormalities seem to be directly related with the length of mobile phone use” (La Vignera 2012).
Given the backdrop of increasing infertility rates (Swan 2006), the research findings should be a wake-up call to male cell phone users who are trying to have children or may want to in the future.
Even as scientists continue to gather new data on health risks from cell phone radiation, the findings underscore that consumers should practice simple, precautionary safe-cell-phone-use habits, such as keeping the phone away from the body, in order to protect their health and fertility. Men, in particular, should avoid carrying a cell phone on the belt or in a pants pocket when in use.
What About Women’s Health?
There are no published studies examining the effect of cell phone radiation on reproductive health in women. Such studies are much more difficult to carry out, since they often require invasive techniques. However, several recent articles suggested that cell phone radiation might be harmful to the developing fetus. For example, a 2009 study in Turkey found that after pregnant rats were exposed to cell phone radiation for 15 minutes twice a day during the entire gestation period, their female pups had fewer ovarian follicles (Gul 2009). A 2012 study by researchers at the Yale University School of Medicine found that mice exposed to cell phone radiation during gestation were hyperactive and had impaired memory (Aldad 2012).
There have been similar findings in two human studies. UCLA researchers reported that cell phone exposure during pregnancy and after birth was associated with behavioral problems in young children (Divan 2008; Divan 2012). This line of research is just beginning, but a recent review article emphasized that cell phone radiation might impact reproduction and development in both men and women (Merhi 2011).

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