nuthinbutpink
November 17th, 2011, 06:12 PM
I attached this to one of Atomic's posts but I just want to make sure it doesn't get lost.
I just want to update this with the information about the IG claim that XX swim in circles and XY swim straight. This is completely FALSE.
Here is an excerpt from a fertility clinic about sperm motility:
•Sperm Motility: This part of the test assesses how well your sperm can swim. Obviously, the stronger the swimmers, the better as it is quite a journey for the sperm to make it from the uterus to the fallopian tubes. Sperms are evaluated according to a four-level grade system:
•Grade 4 sperm are known to have progressive motility meaning they are the strongest and swim fast in a straight line.
•Grade 3 sperm (non-linear motility) also move forward but tend to travel in a curved or crooked motion.
•Grade 2 sperm are labeled as non-progressive motility because they do not move forward despite the fact that they move their tails.
•Grade 1 sperm are immotile meaning that they fail to move at all.
Ideal sperm quality dictates that a man should have grade 3 or 4 sperm in order to fertilize an egg.
So, the idea that Grade 4 is XY and Grade 3 XX is just completely false and I have no idea where that even comes from! Sperm cannot swim in circles or they would never reach the egg! Dr Wegner, our Embryologist on here also addressed this in her forum- totally false. Just think, if it were true, all the IVF people would get all the right gender if it were that easy! For most of us, it is a 50/50 split at the end of our cycles.
Just trying to address some of the misinformation that is out there!!
I just want to update this with the information about the IG claim that XX swim in circles and XY swim straight. This is completely FALSE.
Here is an excerpt from a fertility clinic about sperm motility:
•Sperm Motility: This part of the test assesses how well your sperm can swim. Obviously, the stronger the swimmers, the better as it is quite a journey for the sperm to make it from the uterus to the fallopian tubes. Sperms are evaluated according to a four-level grade system:
•Grade 4 sperm are known to have progressive motility meaning they are the strongest and swim fast in a straight line.
•Grade 3 sperm (non-linear motility) also move forward but tend to travel in a curved or crooked motion.
•Grade 2 sperm are labeled as non-progressive motility because they do not move forward despite the fact that they move their tails.
•Grade 1 sperm are immotile meaning that they fail to move at all.
Ideal sperm quality dictates that a man should have grade 3 or 4 sperm in order to fertilize an egg.
So, the idea that Grade 4 is XY and Grade 3 XX is just completely false and I have no idea where that even comes from! Sperm cannot swim in circles or they would never reach the egg! Dr Wegner, our Embryologist on here also addressed this in her forum- totally false. Just think, if it were true, all the IVF people would get all the right gender if it were that easy! For most of us, it is a 50/50 split at the end of our cycles.
Just trying to address some of the misinformation that is out there!!