Is this a worrying study, or is it flawed?
A study has found that cell phones are detrimental to male sperm quality (Lower sperm motility and sperm concentration). It’s original goal was to determine if image content has a effect on sperm quality, but accidentally discovered that men who said they kept their phone in their pocket had worse sperm quality than those who didn’t have a phone in their pocket. As far as I can tell, from my limited knowledge, the study isn’t very flawed. What I do know is that they used 52 men, which doesn’t seem like a lot.
Another possible flaw is in regard to how they took sperm samples. Sperm parameters can vary amongst healthy individuals, the WHO recommends taking at least 2 samples to determine fertility. This study took one sample from all 52 men, then asked them if they wanted to participate the second time around and only 25 men agreed. So, they did take more than one sample but only for 25 men. I’m not sure, but this doesn’t seem like very good methodology as only 25 of the samples are representative.
Another issue is that the study had a variable that it changed from person to person. As stated, it’s original goal was to find out if image content affected sperm quality, and they concluded that it can. They gave different images to each mam, meaning that some of the images would have had a detrimental affect to the sperm quality. So, they could have gave a healthy cell phone user a type of image that causes poor sperm quality. However, it would be coincidental that cell phone use was still correlated with poor sperm, even if the study randomly gave out out different images to different people that could cause poor sperm in the analysis the ones with poor sperm.
I was wondering if certain lifestyle factors that tend to be associated with phone use where causing the infertility, not the phones themselves, but the study had a very extensive questionnaire and adjusted for many different factors from bathing habits to diet, so I don’t think that the study can be flawed in this are. What do you guys think? Is this something that we should be worried about and change our habits over, or is it scientifically limited and no cause for alarm until bigger and better studies conform their findings?