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When trying to conceive, it’s natural to feel overwhelmed by all the factors that can affect your chances of success. You may have heard of the microbiome before – but what you may not know is that there is a special kind of microbiome that directly impacts your fertility. This microbiome is known as the seminal microbiome. In this blog post, we’ll discuss the basics of the seminal microbiome and why it’s so important for couples trying to concieve.

What is the Seminal Microbiome?

The seminal microbiome refers to the microorganisms found in semen samples from men. It includes bacteria, fungi, protozoa, viruses and other microorganisms which are essential for fertility and good reproductive health. The composition of these organisms can vary depending on a variety of factors such as diet, lifestyle and age.

Why Is It Important?

The seminal microbiome plays an important role in fertility by helping to protect sperm against infection or damage during ejaculation and helps them survive in their environment outside of the body. It also helps promote healthy sperm motility (movement) which is necessary for successful fertilization. A healthy seminal microbiome also helps reduce inflammation which can interfere with conception.

How Does it Affect Fertility?

A study conducted at Stanford University in 2019 showed that semen samples with a higher concentration of certain types of bacteria were associated with higher rates of fertilization than those with lower concentrations. Furthermore, research suggests that some bacterial species found in semen samples can interact with sperm cells and increase their ability to penetrate an egg cell for successful fertilization – making them even more important for couples trying to conceive!


The seminal microbiome is an essential part of male fertility and reproductive health. While its exact role remains largely unknown, research has shown that higher concentrations of certain types of bacteria in semen samples are associated with higher rates of successful fertilization. For those struggling to conceive, understanding the composition and importance of your own seminal microbiome could be key to improving your chances – companies like Fertilysis can support you in understanding you seminal microbiome. Then I can support you in understanding those results and improving your seminal microbiome to support your fertility.