"We can sort you out. No problem. We can help you," the doctor told Jennifer Hannington. Then he turned to her husband, Ciaran, and said: "But there's not much we can do for you."
The couple, who live in Yorkshire, England, had been trying for a baby for two years. They knew it could be difficult for them to conceive as Jennifer has polycystic ovarian syndrome, a condition that can affect fertility. What they had not expected was that there were problems on Ciaran's side, too. Tests revealed issues including a low sperm count and low motility (movement) of sperm. Worse, these issues were thought to be harder to treat than Jennifer's – perhaps even impossible.
Hannington still remembers his reaction: "Shock. Grief. I was in complete denial. I thought the doctors had got it wrong." He had always known he wanted to be a dad. "I felt like I'd let my wife down."
Over the years, his mental health deteriorated. He began to spend more time alone, staying in bed and turning to alcohol for comfort. Then the panic attacks set in.
"I hit crisis point," he says. "It was a deep, dark place."
Male infertility contributes to approximately half of all cases of infertility and affects 7% of the male population. However, it is much less discussed than female infertility, partly due to the social and cultural taboos surrounding it. For the majority of men with fertility problems, the cause remains unexplained – and stigma means many are suffering in silence.
Research suggests the problem may be growing. Factors including pollution have been shown to affect men's fertility, and specifically, sperm quality – with potentially huge consequences for individuals, and entire societies.
A hidden fertility crisis?
The global population has risen dramatically over the past century. Just 70 years ago – within a human lifetime – there were only 2.5 billion people on Earth. In 2022, the global population hit eight billion. However, the rate of population growth has slowed, mainly due to social and economic factors.
Birth rates worldwide are hitting record low levels. Over 50% of the world’s population live in countries with a fertility rate below two children per woman – resulting in populations that without migration will gradually contract. The reasons for this decline in birth rates include positive developments, such as women's greater financial independence and control over their reproductive health. On the other hand, in countries with low fertility rates, many couples would like to have more children than they do, research shows, but they may hold off due to social and economic reasons, such as a lack of support for families.