You might have heard that carrying your phone in your pocket can reduce your testosterone levels and sperm count, and guess what? That is true. The data contained within this meta-analysis and other meta-analyses clearly point out that it can reduce sperm count and maybe testosterone levels significantly, but certainly sperm count and motility significantly.

It reduces sperm quality. So should you avoid putting your phone in your pocket? Certainly your front pocket, I would suggest yes, right? If you are somebody who is seeking to conceive, right? And then people say, well, I don't actually feel the heat of the phone. It doesn't get that warm.

But the temperature effects of the phone, it turns out, are enough, even under conditions in which people don't report it to be uncomfortably warm, that it can change the temperature milieu of the testicle in ways that can diminish sperm quality. How much and how that relates to fertility and healthy pregnancy, not clear.

But since we're talking about things to avoid, if your goal is to have a healthy fertilization in pregnancy, well then, by all means, just don't carry it in your front pocket.