SOURCE: Adapted from Francesca Steyn & Dr Becky Kay, "Why male fertility deserves better: The evidence for individualised care", Progress Educational Trust (22 June 2026). Written by Francesca Steyn, NMC-registered fertility practitioner
Thinking about a male fertility test? A male factor contributes to around half of all cases of infertility, yet men are usually tested last, and results often arrive as a raw report with no explanation attached. An at-home sperm test backed by individualised care changes that: a clear result, a clinical interpretation, and a path forward, whatever the outcome. Here is the evidence for why early, supported male fertility testing matters.
This post draws on a recent piece by Francesca Steyn, Senior Fertility Nurse Specialist, and Dr Becky Kay, Scientific Director at Malebox Health, published by the Progress Educational Trust.
Half of Infertility Involves a Male Factor
When fertility is discussed, attention tends to default to female biology. The evidence does not support that focus. A male factor contributes to roughly half of all cases of infertility, and the Human Fertilisation and Embryology Authority (HFEA) reports that male factor infertility accounts for around 37 percent of cases where a cause is identified, with a contribution to many "unexplained" cases on top of that.
Despite this, men are frequently the last to be tested. Testing often happens only after a female partner has been through more invasive investigation. The result is delayed diagnosis, delayed treatment, and for some couples, missed windows for intervention.
Sperm Quality Is Measurable, and It Is Changing
One reason male fertility testing deserves earlier attention is that sperm quality is not a fixed biological constant. It is measurable, and the long-term trend is concerning.
A widely cited 2017 meta-analysis reviewed 185 studies spanning four decades and found that sperm concentration among men in Western countries fell by 52.4 percent between 1973 and 2011, with total sperm count falling by 59.3 percent. A 2023 follow-up by the same group found the decline has continued and now extends to non-Western populations, pointing to a global trend. The overall decline has run at roughly 1.2 percent per year since 1973, accelerating after the year 2000.
The causes are likely multifactorial and not fully understood. Endocrine-disrupting chemicals, rising rates of obesity, heat stress, and psychosocial stress have all been implicated.
The flip side of "modifiable" is encouraging. A Mediterranean diet has been positively associated with improvements in sperm motility and morphology. Weight loss in men who are overweight or obese has been linked to higher sperm concentration and total motile sperm. Regular physical activity is associated with better semen parameters, while sedentary behaviour and smoking pull in the opposite direction.
Why Men Test Last
The barriers to male health engagement are well documented. Research consistently finds that men are less likely to visit their GP, less likely to present early, and more likely to minimise a health concern. In the UK, men account for around three in every four suicide deaths, a figure that has stayed consistent across years of ONS data.
Fertility sits squarely within this dynamic. Seeking a semen analysis means first acknowledging there might be a problem, knowing it can be objectively measured, and understanding how to access a test at all. Self-reliance norms, stigma, and low health literacy around male-specific conditions each add friction. When the pathway to testing feels inconvenient, embarrassing, or unfamiliar, many men simply never start it.
This is part of why an at-home sperm test can be so useful: it removes the clinic visit, which for many men is the single biggest barrier to ever getting checked.
A Result Is Not the Same as Care
This is where individualised care matters most. A diagnosis of male factor infertility can be a serious one. Research documents that men who receive such a diagnosis frequently report shame, a sense of diminished masculine identity, anxiety, and personal failure, even though semen parameters sit on a spectrum and are often responsive to intervention.
Those reactions are not irrational. They are a predictable consequence of receiving significant health information with no context or support. A comprehensive review of the psychological and social aspects of male infertility found that men with male factor infertility are at higher risk of depression and anxiety, often made worse by a lack of psychosocial support within clinical pathways. Men in this position are also less likely than women to seek emotional support, which makes the consultation itself a rare and important opportunity to offer it.
Clinical guidance recognises this. The NICE Fertility Guideline (CG156) recommends that people being investigated for fertility problems are given information at every stage and have access to counselling from appropriately trained professionals, as part of standard care rather than an optional add-on. A result delivered by a clinician who can explain what the findings mean, what they do not mean, and what options exist produces better outcomes than a dataset of numbers and percentages.
This is also where some at-home sperm tests fall short. A kit that posts back a number with no clinician attached leaves plenty of room for misinterpretation, because a semen analysis is a genuinely variable result that needs context to read properly. Personal context plus a proper understanding of the test taken is what makes the advice safe and useful. It is the difference between a home sperm test with a clinical consultation and a bare data report.
What This Means in Practice
The practical model that follows from the evidence is straightforward: make testing easy to access, then wrap a clinical conversation around the result.
At-home sample collection, when paired with rigorous laboratory analysis, has been validated as a reliable pathway for reproductive health testing, provided temperature-controlled logistics and standardised collection protocols are maintained. Remote and video consultation has shown strong acceptability in men's health because it removes the need to sit in a clinical environment many men find inhibiting. Combining at-home collection with specialist consultation is not a compromise on care. For many men, it is the only model that actually reaches them.
This is exactly how the Malebox home sperm test works: temperature-controlled packaging, laboratory analysis measured against WHO guidelines, and results delivered by an HCPC-registered clinician who talks you through what they mean. For couples who have been trying to conceive for 12 months or more, NICE recommends investigating both partners, and a sperm test with a full male hormone profile gives a more complete picture as a natural next step.
The wider point is that male fertility is bound up with male health more broadly: hormonal health, metabolic health, and psychological wellbeing. A man who learns his sperm parameters fall below the WHO reference values (a lower limit of 16 million per millilitre under the 2021 sixth edition) needs context, information, and a clear next step, not just a number.
Reframing male fertility assessment from a last resort into a proactive first step is good for individual men and couples. If sperm counts really are in sustained decline, it is also a public health priority.
Frequently Asked Questions
Q: What does a male fertility test measure? A: A semen analysis measures parameters such as sperm concentration, total count, motility, and morphology, compared against WHO reference values. The 2021 WHO lower limit for sperm concentration is 16 million per millilitre. A consultation helps interpret what your specific numbers mean for you.
Q: How common is male factor infertility? A: A male factor contributes to roughly half of all infertility cases. The HFEA reports that male factor infertility accounts for around 37 percent of cases where a cause is identified, and it contributes to many cases labelled "unexplained".
Q: When should men get a fertility test? A: NICE recommends both partners are investigated once a couple has been trying to conceive for 12 months or more. Many men also choose an at-home sperm test earlier, proactively, to understand their baseline before there is any concern.
Q: Is an at-home sperm test reliable? A: At-home collection paired with proper laboratory analysis has been validated as a reliable pathway, as long as temperature-controlled logistics and standardised protocols are maintained. The quality of the analysis and the consultation that follows matter just as much as the convenience.
Q: Can sperm quality be improved? A: Often, yes. Semen parameters sit on a spectrum and can respond to changes such as a Mediterranean-style diet, weight loss where relevant, and regular physical activity. A consultation helps interpret results and identify which next steps are appropriate for you.
Male fertility has spent too long as the overlooked half of the conversation. The science on declining sperm quality is growing, the barriers to male engagement are well understood, and the technology to deliver accessible, clinically rigorous testing with a proper consultation already exists. The Malebox home sperm test with consultation is built around exactly that idea: a clear result, a clinical interpretation, and a path forward, whatever the outcome.
Francesca Steyn is an NMC-registered fertility practitioner with over 20 years in reproductive health. She has served on the NICE guideline committee and the HFEA legislative reform group.
