It's my pleasure to answer another one of your interesting questions.
(My neighor gave birth to her 4th boy last week - obviously they wanted a girl!)
Please keep in mind that this answer is for information purposes only,
and is not intended to diagnose, treat or replace sound medical advice
from your physician or health care provider. Note the Important
Disclaimer at the bottom of this page.
In the past, it was thought that...
- Males developed on the right side of the uterus and females on the
left (5th century B.C.)
- An orgasm by the woman before the man selected for male offspring
(Talmud, Leviticus 12:2)
- The child?s sex was the same as the sex of the most active partner
during the procreative process (Aristotle)
- Copulation with the heads of the couples pointed North favored the
birth of a male child.
According to AmazingPregnancy.com - Gender Selection for Your Baby
The following methods are the current theories regarding gender
selection while trying to conceive.
The Shettles Method
The Shettles, by Dr. Landrum Shettles and David Rorvik, authors of How
To Choose the Sex of Your Baby, is the method most used and most
effective. According to this method Y-chromosomes (for boys) move
faster but don't last as long as X-chromosomes (for girls), Dr
Shettles says it makes sense to have sex as close as possible to
ovulation if a boy is what you want. If you try to conceive two to
four days before you ovulate, you'll most likely have a girl.
The Whelan Method
Boy or Girl ?, by Elizabeth Whelan, Sc.D
Elizabeth Whelan, Sc.D., doesn't agree with the Shettles method and
suggests the opposite. Whelan says if you want a boy, have intercourse
four to six days before your basal body temperature goes up.
If you want a girl, don't make love until two to three days before ovulation.
The Ericsson Method
In 1975, Ronald J. Ericsson, Ph.D. began clinical studies to determine
whether such enriched sperm samples would result in offspring of a
desired gender. Today the Ericsson method is used in approximately
half of the centers in the U.S.
Dr Ericsson devised methods by which X and Y sperm can be separated
through filtering processes. This sperm sample is used for
insemination when ovulation is anticipated. The enriched sperm sample
is then available to fertilize the egg.
A daily record of observations made at the vulva is essential for the
Billings Ovulation Method. The recording is made in the evening of the
most fertile characteristics noticed throughout the day. The first
record, which is begun immediately, is usually of 2 - 4 weeks duration
and is made without any genital contact so that the observations will
not be confused by any secretions due to intercourse or contact. Your
chart provides information for your husband as well, and it helps open
the door for communication and decisions during these times.
A helpful question to an anxious woman is to ask her how she knows
when menstruation begins. She will readily admit that she both feels
and sees the bleeding as it arrives at the vulva. The observations of
sensation and appearance will then be applied to all other
observations the woman makes at the vulva. As the days go by she will
recognize her patterns of fertility and infertility, according to the
BabyHopes.com - How to Choose the Sex of Your Baby:
The Method Best Supported by Scientific Evidence The Shettles Method
Baby Gender Selection Book
How to Conceive a Boy - Determining the Time of Ovulation:
"Determining when you ovulate is vital when you are learning how to
conceive a boy. Shettles recommends that you have sex as early as 24
hours before ovulation to no more than 12 hours past ovulation in
order to increase your chances of conceiving a boy. Having sex too far
in advance to ovulation will dramatically decrease your chances of
conceiving a boy. The timing of intercourse in relation to ovulation
is a vital factor in increasing your chances of having a boy.
Shettles suggests three specific ways in which to do this."
"Frequency and Timing of Intercourse:
Shettles says in order to increase the chances of having a boy, you
should have sex now earlier than 24 hours before ovulation to 12 hours
Intercourse closer to ovulation the faster but less robust Y (boy)
sperm. The cervical mucus present at ovulation is less acidic and
"slippery" enough to help the Y (boy) sperm reach the egg more
Shettles suggests that if you are trying to conceive a boy, deep
penetration from your partner, preferably with the "doggy style"
position, will deposit the sperm closer to the cervix giving the more
aggressive and quicker moving "boy" sperm a head start to
fertilizating the egg first.
Sex and Orgasms:
When trying to conceive a boy, Shettles suggests that orgasms during
sex are a good thing as the body produces substances after orgasm that
makes the vaginal environment more alkaline, which favors the "boy"
The contractions which accompany an orgasm help move the sperm up and
into the cervix, giving the "boy" sperm an extra chance at being
available when your egg is available for fertilization.
Considerations for the Men:
Have your partner wear boxers. Wearing tight fitting underwear
increases the heat levels around the testes and can, in turn, lower
the sperm count. Wearing loose fitting underwear helps keep the testes
Have your partner drink a caffeinated beverage right before sex. This
makes the Y-Sperm more active."
Will it Be a Boy or a Girl? Predicting and Influencing Gender
Can Timing of Intercourse Influence Gender Outcome?
"It is believed that if intercourse takes place closer to ovulation,
then the probability is greater that the child will be male, due to
the high motility (forward progression) and the decreased life span of
Tried, But Not Always True - Methods to Choose Baby?s Sex Range From
New Tech to Old Ideas
Some of the most popular natural methods to choose a baby's gender
were developed by Landrum Shettles, a U.S. doctor who believed that
the slight differences in X and Y sperm could be taken advantage of by
choosing specific behaviors that may influence which sperm reaches the
egg first during conception. Many books and home gender selection kits
borrow from these ideas. Below are some basic explanations of some of
Shettles' principles, which remain largely unproven in the scientific
Diet: To conceive a boy, the mother should consume foods high in
sodium and potassium, and minimize her intake of calcium and
magnesium. To conceive a girl, the mother should consume foods high in
calcium and magnesium and avoid foods that are high in sodium and
Timing: To have a boy, the Shettles technique recommends having sex
no earlier than one day before and up to one-half day after ovulation.
To have a girl, he suggests having sex no later than two and one-half
to three days prior to ovulation.
Acidity: Some methods, including the home kit, GenSelect, claim that
douching with an acidic or alkaline solution can tip the balance to
having a boy or girl. The idea is a girl is more likely to be
conceived in an acidic environment, while boys are more likely to be
created in an alkaline one. Therefore, douching with vinegar (or
specifically devised acidic solutions) is recommended for those
wanting a girl, while douching with baking soda (or specifically
devised alkaline solutions) is suggested for those wanting a boy.
Can you really choose the sex of your baby?
"For as long as we've been having babies, women have been exchanging
ideas about how to have either a boy or a girl. Unfortunately there's
no medical evidence that any of them actually work!
Having said that, there'll always be a mum who tells you an old wives'
tale worked for her. So if you fancy defying the experts and trying to
tip the balance towards one sex yourself, why not try some of the
You're more likely to conceive a boy if...
- You have sex on the day of ovulation, as male sperm are thought to
swim faster and reach the egg first
- you reach orgasm before your partner, as this releases an alkaline
fluid, thought to be more male-sperm friendly than the vagina's
- you have deep penetration during sex, such as rear-entry (doggie-style)
- your partner has a high sperm count. This is because male sperm are
not as strong as female sperm, and so the higher the count, the more
chance there is of a male sperm reaching the egg first
- you avoid sex for a week before ovulation and then only have sex
once on ovulation day, to keep the sperm count high
- your partner suggested the love-making
- you make love at night
- you make love on odd days of the month
- your partner keeps his genitals cool by wearing boxer shorts and
- you eat salty food, plenty of meat, fish, white flour, pasta, fresh
fruit, certain vegetables, but avoid milk and dairy products, such as
yoghurt and cheese, nuts, chocolate, shellfish and wholemeal bread."
I have two girls already and now my husband and I would like to try
for a boy. Is there any way to increase my chances for a boy?
Throughout history, couples have tried to naturally influence the sex
of their babies without much success. These days some couples try
timing sex with ovulation. The theory is that female sperm may last
longer and swim a little more slowly, so if you're after a girl you
time sex a couple of days before ovulation, whereas if you're after a
boy (the sperm may be faster and more short lived), you have sex
around ovulation. Sounds simple, but in reality with each ejaculation
there can be a couple of hundred million competing sperm, so the odds
of conceiving either sex start to even up. For some couples there are
clear medical and genetic reasons for trying for a particular sex, and
IVF can help determine the sex of an embryo before it's implanted.
Certain IVF clinics will also help couples have a child of a preferred
sex, even if it's for social reasons. This is presently very
controversial and before any decision is made, there are ethical
dilemmas to consider along with the potential risks and costs of IVF.
For more information, you might like to chat with your GP. At the end
of the day, no matter what we naturally do, Mother Nature is usually
the one who decides the sex of our babies.
Low-Tech Ways to Choose Your Baby's Gender
By Virginia Gilbert
How to Get a "Shettles Boy"
In a nutshell, couples hoping for a boy should do the following:
Either abstain from sex or use condoms until 4 days before ovulation.
After this point, abstain entirely until 12 hours prior to ovulation;
this sexual respite acts to boost a man's sperm count, a condition
that Shettles maintains favors male sperm. During the 12-hour
ovulatory window, a couple should have sex, preferably just once.
After this, partners must use condoms if they have intercourse again
in the next several days.
Does the Shettles Method Really Work?
Ovulation Calendar is a program that calculates the time of ovulation
and generates your personal fertility calendar.
Conceiving a Boy - To conceive a boy
(scroll to bottom of page to Download the Free 45-Day Trial Version of
Ovulation Calendar - click on the blue link "ovulation-calendar".)
A friend of mine purchase this calendar and said it worked for her! :)
According to your biothythms, your Boy Calendar will give you the next
dates where you have up to 95% chances to conceive a baby boy for the
next 6 or 12 months. According to your cycle, and the variations you
might experience, you just need to identify your days of fertility and
report them on the calendar. To identify your period of fertility, you
can use our free Fertility Calculator.
A woman is considered to be the most fertile for 5 days within each
period cycle: the DDAY (the ovulation day), 3 days prior to the DDAY
(DDAY-3, DDAY-2 and DDAY-1) and 1 day after the DDAY (DDAY+1). Fill in
the first day of your last period and your cycle length. Click on the
'Calculate' button and you will find out the days you are the most
fertile for your next 3 cycles.
Boy or girl? 38 fun ways to guess your baby's sex
More Old Wives Tales and Folklore:
Sperm Sorting - MicroSort General Information
More information on Sperm Sorting:
Best regards and Much Good Luck to you,