A team of
international researchers has found that cell phone use may have negative
effects on the fertility of men.
Rany Shamloul, study leader and a postdoctoral fellow in the Department of
Pharmacology and Toxicology at Queen's University, along with a team of U.S.
and Austrian researchers, have found that male cell
phone users have lower quality sperm than those who do not have
Shamloul and his team conducted the study between 1993 and 2007 at an Austrian
infertility clinic, where the sperm of over 2,000 men had been collected and
examined. Men were asked if they owned and used cell phones at the time of collection,
and those who used one on a daily basis were labeled cell phone users.
After studying the collected sperm and cell phone users and non-users, the
researchers found that men who regularly used cell phones had higher levels of
circulating testosterone, but lower levels of luteinizing hormone, which is a
key reproductive hormone that secretes by the pituitary.
The researchers' theory is that the electromagnetic waves that
cell phones emit increase the number of testosterone-producing cells, but also
lower levels of luteinizing hormone. This, in turn, may negatively impact
But at this point, these results are not conclusive. The researchers need more
time and research to determine if the cell phone use is really what is causing
the low quality sperm, or if it's something else.
Whether cell phone use is the culprit or not, this is an important first step
to more rigorous studies that research the link between male infertility and
cell phone electromagnetic waves.
quote: You would know about 'uncontrolled variables' if you read the study itself. Did you?