The first paragraph in the article says: &#x27;Fertility experts are warning man that using a mobile for as little as an hour a day is &quot;cooking sperm&quot; and lowering level significantly.&#x27;<p>Assuming for the sake of argument that the findings of this research are actually correct, it seems to me that using your mobile phone <i>more</i> would <i>reduce</i> the sperm-cooking effect, because most ways of actually using a mobile phone don&#x27;t involve holding it near your groin.<p>The reported effect is large enough that I strongly suspect it&#x27;s (1) just wrong or (2) actually caused by some other thing that happens to correlate with mobile phone use. The <i>Telegraph</i> article doesn&#x27;t seem to provide a link to the actual study, so it&#x27;s hard to tell.<p>I notice that they say &quot;The team monitored more than 100 men attending a fertility clinic for a year&quot; -- it&#x27;s hard to see how any study based only on looking at men who are having trouble conceiving could actually provide the information the <i>Telegraph</i> is suggesting this one does.