Male Factor Infertility

Fertility is a shared picture, and male factors contribute to roughly half of infertility cases where a cause is found. A standard semen analysis looks at count, motility and morphology, but it doesn't assess sperm DNA fragmentation, a measure linked in research to lower fertilisation rates, poorer embryo development and higher miscarriage risk, even when a semen analysis looks entirely normal.

Emerging research is also looking at the seminal microbiome, the bacterial environment within semen itself, and its impact on sperm quality. This is a newer area of investigation, distinct from a clinically obvious seminal infection, since more subtle bacterial imbalances can affect sperm parameters even without overt signs of infection. Recent studies link certain bacterial patterns in semen to reduced sperm motility and abnormal parameters, while a more Lactobacillus-dominant profile is associated with healthier semen. Where testing identifies a seminal infection or significant dysbiosis, this can be addressed directly, through antimicrobial and probiotic approaches, alongside broader gut health support given the emerging evidence linking gut microbiome health to sperm production.

As a fertility nutritionist working with a functional medicine approach, I support male fertility with targeted testing and a nutrition and supplement plan built around the 90-day window sperm take to develop, addressing oxidative stress, nutrient gaps and lifestyle factors known to affect motility, morphology and DNA integrity.