Studies have shown that infertility affects about 15% of couples on a global scale. It is estimated that worldwide, this amounts to about 48 million couples. The research indicated that overall men may contribute in some way to more than 50% of all cases overall.
Infertility is defined as no conception taking place after up to 2 years of unprotected sex taking place. However, it is important to note that only medical tests can establish where the problem may lie.