Understanding O+12

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If you have your heart set on having a girl, then the O+12 method may be your ticket to a beautiful little princess. This method was developed by an Australian woman, who after trying to have a girl using the Shettles method, gave birth to six boys (yikes!) While the Shettles method advises timing intercourse for just prior to or after ovulation, O+12 advises having intercourse a full 12 hours after ovulation. To clarify, intercourse does not occur until 12 hours after ovulation has finished.

The Story

Kynzi, the woman who cemented the O+12 method, had 6 sons. Five of those sons were conceived using the Shettles Method for girls. After being told by a nurse that the Shettles Method has a less than 50% success rate, she decided to do some research. She found a New Zealand Study that tracked the sex of offspring in relation to the timing of intercourse, and how it met up with the couple’s expectation of what sex they were conceiving.

{ MORE: 8 Common Gender Prediction Methods }

Although only 33 of the 185 participants actually completed the studies, all couples (save one) who had intercourse on the day they ovulated, gave birth to girls. A follow-up study showed the same results.

What do you think?

Understanding O+12

Tell us what you think!


  1. lucy says:

    Read ‘Swaying’ by Lucinda Blanchard on Amazon. It’s a fictional account of two woman who really want a daughter it mentions 0+12

  2. kirsten says:

    I haven’t heard of this yet.thanks for the info.

  3. mommy nhoj says:

    It could turn out right or the other way. I am not so sure if there is really a reliable method to sway preferred gender 🙂

  4. TaKeisha says:

    I have a medical background and I have never heard of this method.

  5. That really sucks! She had 6 boys! My husbands family is full of boys and I really hope we have a girl at least one girl!

  6. Marilyn says:

    This is pretty cool.

  7. Elfie says:

    Wow! Those are some statistics!

  8. Lulu says:

    Never heard of this method. I’m not too sure it works, but worth a try.

  9. Jeanetta says:

    Never heard of the 0+12 method before.


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