Sperm are male reproductive cells present in the ejaculate. A doctor can tell someone their sperm count using a test called semen analysis. The average sperm count is between 40 million and million sperm per milliliter. This number can vary between testing centers, with the above range coming from Resolve , a nonprofit fertility association. A doctor may recommend a semen analysis for many reasons, such as to test for possible underlying causes of infertility , how well the reproductive organs are working, or whether a surgical procedure for sterility was successful.
Andrological parameters in men with high sperm counts and possible correlation with age
We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Infertility is more common than you might think. It affects about one in every six couples, and researchers estimate about one in every three cases is due to fertility problems in the male partner alone 1 , 2.
Recent reports have indicated a decrease in semen quality of men in some countries, and suggested regional differences. Semen analysis was standardized, inter-laboratory differences in assessment of sperm concentration were evaluated, and morphology assessment centralized. Lowest sperm concentrations and total counts were detected for Danish men, followed by French and Scottish men. Finnish men had the highest sperm counts.
Declining sperm counts and the increasing average age of first-time parents spell trouble for human fertility, especially when set against the backdrop of ageing populations. EMBO reports advance online publication April; doi We all exist because of our parent's fertility; yet in the grand scheme of evolution, fertility is a crucial selection factor that has determined the future of our own and many other species.