"semen"

Frequent use of mobile phones, which emit electromagnetic radiation, can lower sperm concentration and total sperm count.

The team led by researchers at AIIMS Patna noted that COVID-19 can lead to multiorgan damage through the angiotensin-converting enzyme-2 receptor (ACE2), abundant in testicular tissue.

It may sound weird but there is a medical condition where women often become allergic to semen, leading to the couple struggling to conceive a child.