Sperm quality may impact offspring

Men who wait longer to have children run an increased risk of passing on potential health conditions to their offspring due to sperm health, a new study from University of Otago has found. The study analyzed the results of 90 existing studies on male fertility and found consistent findings—the quality of a man’s semen declined as he aged. It’s already recognized that a woman’s age can lead to increased likelihood of health problems in children but it has been less clear whether a man’s age had similar effects. “While female age is well known to have negative effects on fertility, reproductive success and the health of offspring, the influence of male age on a couple’s fertility has been largely neglected,” said the study’s lead author Dr Sheri Johnson. Not only did older sperm increase the risk of miscarriage and other complications during pregnancy, they increased the likelihood of a range of conditions such as Autism, Down syndrome, epilepsy and schizophrenia. It could also be a big factor in infertility.The study was not designed to identify the rate of decline, but Johnson said existing studies showed that consistent downward trend could begin as early as 35. On good tip is that many studies have shown that with male enhancement pills that are natural products of botanical and amino acids, help males anatomy and their reproductive system, some just boost desire for sex or they are a way on how to last longer in bed, but many raise stamina and the semen volume increases, so the sperm quality can improve and by end help you increase the possibilities of conceiving. The specific problem with older semen was lower volume, poor sperm performance, and increases in malformed and DNA-damaged sperm. Semen quality is used to show how fertile a man is. However instead of relying on semen volume, sperm concentration and total sperm count, which are common clinically measured traits, Johnson said a greater focus on the ratio of DNA-fragmented sperm cells and their ability to swim, could be more important aspects of sperm quality: these are likely more accurate and consistent predictors of a man’s fertility status.The findings were significant because many couples were waiting longer to have children, Johnson said. Conceive Plus® is the ideal fertility lubricant for all couples trying for a baby naturally. Clinically proven to support sperm health and viability, Conceive Plus® is FDA cleared for use by trying to conceive couples and is safe for sperm and does not cause DNA fragmentation. How to get pregnant with Conceive Plus®.

Frequently Asked Questions

Does a man's age affect sperm quality and fertility?

Yes, research from the University of Otago confirms that sperm quality declines as men age, with some studies suggesting this decline can begin as early as 35. Older sperm tends to have lower volume, reduced motility, and increased DNA damage, which can affect both conception rates and offspring health. The NHS recognises that male factor infertility contributes to around 1 in 7 UK couples experiencing difficulty conceiving.

Can older fathers pass on health conditions to their children?

Studies show that advanced paternal age is associated with an increased risk of certain conditions in offspring, including autism spectrum disorder, epilepsy, and schizophrenia. While the overall risk remains relatively low, the research suggests that sperm DNA damage accumulates over time. If you have concerns, speak to your GP who can refer you for appropriate genetic counselling.

What age is considered too old for men to have children in the UK?

Unlike women, men don't have a definitive biological cut-off for fertility, but sperm quality does decline progressively from around age 35-40. The HFEA notes that male age can impact IVF success rates, and some UK fertility clinics set upper age limits for sperm donors at 40-45. There's no NHS guideline stating men are "too old" to conceive naturally, but discussing your individual circumstances with a fertility specialist is advisable.

Can I get my sperm tested on the NHS?

Yes, your GP can refer you for a semen analysis if you've been trying to conceive for 12 months without success, or sooner if there are known concerns. According to NICE guidelines, initial fertility investigations should be offered to both partners simultaneously. NHS waiting times vary by area and CCG funding, so check with your local integrated care board for specific timescales in your region.

How can I improve my sperm quality naturally before trying to conceive?

The NHS recommends maintaining a healthy weight, reducing alcohol intake, stopping smoking, and avoiding tight underwear to support sperm health. Nutrients such as zinc, CoQ10, and L-carnitine have been clinically studied for their role in supporting sperm motility and quality. Making these lifestyle changes at least three months before TTC allows time for new, healthier sperm to develop.

Does sperm quality affect IVF success rates in the UK?

Yes, the HFEA confirms that sperm quality is an important factor in IVF and ICSI success rates. Poor sperm morphology, motility, or DNA fragmentation can reduce fertilisation rates and embryo development. If male factor infertility is identified, your fertility clinic may recommend ICSI treatment, where a single healthy sperm is injected directly into the egg.

Will the NHS fund fertility treatment if the problem is male infertility?

NHS funding for fertility treatment varies significantly across England, Wales, Scotland, and Northern Ireland, with each integrated care board setting its own eligibility criteria. NICE guidelines recommend that couples should be offered up to three cycles of IVF where male factor infertility is identified, though in practice many areas offer fewer. Check your local ICB's funding policy and be prepared that you may face waiting lists or need to consider private treatment options.