Can the Number of Brothers You Have Help Predict Fertility?


I just came across a new fun nugget about sperm! 

Did you know that if a man has stellar quick swimming sperm, it can be correlated to how many brothers he has?

This is what scientists from the University of Sheffield and Brown University just discovered from their most current fertility research.  After looking at the results of a semen analysis completed for 500 men who were currently trying to start a family, they found that almost all the men with the fastest sperm had more brothers than sisters in their families.

Although it doesn’t help for couples struggling with infertility, it does point to the fact that genetics plays a huge part in a man’s fertility.  Researchers are excited to take these findings and do some further research, possibly next looking at whether the same holds true for women and how many sisters they have in their family. 

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By TTC veteran and mother of two, Elizabeth Andrews.