Sperm counts among men have more than halved in the last 40 years, research suggests, although the drivers behind the decline remain unclear. The latest findings reveal that between 1973 and 2011, the concentration of sperm in the ejaculate of men in western countries has fallen by an average of 1.4% a year, leading to an overall drop of just over 52%.
A 2017 published comprehensive meta-regression analysis reports a significant decline in sperm counts (as measured by SC and TSC) between 1973 and 2011, driven by a 50–60% decline among men unselected by fertility from North America, Europe, Australia and New Zealand. 
So what does this mean for you? You and your partner might be finding it difficult to get pregnant. Your semen analysis might have shown you are sub-fertile. Or maybe you are simply aware that the health of your sperm prior to conception is crucial to a successful pregnancy and to the health of your unborn child and you would like to improve your own sperm health. Either way, I can help.
1 in 6 NZ couples are affected by infertility or the inability to conceive after 12 months of unprotected intercourse. Research shows that male factor infertility is responsible for up to 40% of all these cases, and 20% is attributed to combined male and female infertility .
The good news is that male factor infertility issues can almost always be overcome!