While most of the practical advice and emotional support related to infertility appears to be aimed at women, research has shown how male infertility has an equal role to play among couples having difficulty conceiving.

Research suggests that in the US about one-third of infertility cases are caused by fertility problems in men and in the UK one in every seven couples may have difficulty conceiving, which equates to around 3.5 million people.

https://www.dailymail.co.uk/health/article-6888377/The-MALE-fertility-diet-two-medical-nutritionists.html