Hi John,
Well, there sure is plenty of information on this, but wow, it?s hard
to find it without the attached moral arguments for and against the
whole idea of choosing the sex of your child. It is quite a
contentious issue! Anyway, I?ve done what I can to present you with
just the facts.
Apparently there are real methods for selecting or controlling the sex
of a baby that have shown reliable results. These involve medical
procedures and, depending on where your sister lives, she may or may
not have access to them.
Here?s a run down of the different techniques and procedures.
Three types of sex selection: 1) pre-natal testing and termination of
pregnancy, 2) pre-implantation genetic diagnosis and selection of
embryos (PGD), and 3) sperm sorting-the selection of sperm carrying
either an X or Y chromosome.
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PRE-NATAL TESTING AND TERMINATION OF PREGNANCY
===========================================
This is exactly what the name implies. After the woman becomes
pregnant, the embryo is genetically tested and if it is the ?wrong?
sex, the pregnancy is terminated. Where other techniques are
available, this method is generally considered unacceptable. However,
its use is widespread in countries where more sophisticated techniques
are not available and where sex selection (usually for boys) is a
cultural preference.
===========================================================
PRE-IMPLANTATION GENETIC DIAGNOSIS AND EMBRYONIC SEX SELECTION
===========================================================
In this case, eggs are fertilized in vitro, their DNA is checked for
sex, and then the appropriate egg(s) are implanted into the woman.
Sydney IVF uses pre-implantation genetic diagnosis (PGD) to assist
parents in selecting the sex of their child for family balancing.
Compared to other sex selection methods, PGD offers an extremely high
accuracy rate.
SYDNEY IVF ? SEX SELECTION
http://www.sivf.com.au/ss_how.htm
SYDNEY IVF
http://www.sivf.com.au/pgd.htm
==========================
SPERM SORTING
==========================
Sperm sorting basically separates the ?girl? sperm from the ?boy?
sperm so that doctors in a fertility clinic can impregnate the woman
with only one or the other. The fertilization can either be done
intrauterine or in vitro.
Sperm sorting can be carried out either by putting live sperm in a
dense liquid and spinning it in a centrifuge to separate the girls
from the boys or by a patented ?Microsort? method where they add a
fluorescent dye to the sperm and use ?flow cytometer? in which a laser
beam causes the dyed DNA to glow.
MICROSORT.NET
http://www.microsort.net/
==============================
HOME REMEDIES AND TECHNIQUES
==============================
Then of course there are the litany of folk methods and other home
techniques which some people believe can influence the sex of the
child. As near as I can tell, none of these have been statistically
proved to influence the sex of the baby.
I?ll give you a handful of sites anyway in case your sister is more
interested in trying such a technique rather than go through a bunch
of medical procedures.
Choosing your baby's sex: The folk wisdom
http://www.babycenter.com/refcap/preconception/gettingpregnant/7061.html
?Remember, none of the popular sex selection methods guarantee
results. Some techniques even contradict each other. "You can find a
small study to support any theory," says Dr. Weinberg of the National
Institute of Environmental Health Science... To follow any of these
methods, you have to be very sensitive to when you ovulate. You can
buy predictor kits, but most people rely on charting their basal body
temperature (BBT) and monitoring their cervical mucus..?
Choosing your baby's sex: What the scientists say
http://www.babycenter.com/refcap/preconception/gettingpregnant/2915.html
Choosing The Sex Of Your Baby
http://www.beyondfertility.com/art100.htm
Planning sex of baby -- the Barthakur method
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12179183&dopt=Abstract
=================
GENERAL OVERVIEW
=================
Q&A: Preimplantation Diagnosis and Sex Selection
Prepared by the Center for Genetics and Society
http://www.genetics-and-society.org/resources/cgs/2002_pgd_factsheet.html
Fertility Institute - Sex (Gender) Selection Employing PGD and Sperm Separation
http://www.fertility-docs.com/fertility_gender.phtml
============
SOME STUDIES
============
?Study findings suggest that manipulating the timing of insemination
during the cycle cannot be used to affect the sex of offspring.?
Sex ratio associated with timing of insemination and length of the
follicular phase in planned and unplanned pregnancies during use of
natural family planning.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9647580&dopt=Abstract
?CONCLUSIONS. ? For practical purposes, the timing of sexual
intercourse in relation to ovulation has no influence on the sex of
the baby.?
Timing of sexual intercourse in relation to ovulation. Effects on the
probability of conception, survival of the pregnancy, and sex of the
baby.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7477165&dopt=Abstract
Thanks for your question John. And thank you for requesting me! If
there?s anything else you need, just yell.
-K~
search terms:
sex selection baby
sex selection family balancing
techniques influence sex baby
?sperm sorting?
pre-implantation genetic diagnosis
family balancing |
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