The Shettles method, popularized in the 1960s by Dr. Landrum B. Shettles, proposes influencing a baby's sex by timing intercourse around ovulation. It suggests that sperm carrying Y chromosomes (for boys) are faster but less resilient, while those carrying X chromosomes (for girls) are slower but more durable.
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Calculate Your Fertile Window →How the Shettles Method Works
The method centers on manipulating factors like:
- Timing of Intercourse: Close to ovulation for a boy, several days before for a girl.
- Sexual Positions: Deep penetration for a boy, shallow for a girl.
- Female Orgasm: Encouraged for a boy, discouraged for a girl.
Does the Shettles Method Have Scientific Backing?
Modern science casts doubt on the Shettles method's accuracy. Studies have found limited to no evidence supporting the claim that timing, position, or female orgasm significantly affect a baby's sex. A key factor to consider is accurately predicting ovulation. Use our ovulation calculator to predict your ovulation and optimal fertile window!
What the Science Says About Sperm
Current research indicates minimal differences in shape, size, motility, swimming pattern, or pH preference between X and Y chromosome-bearing sperm. The primary difference lies in their DNA. As such, most recommendations of the Shettles method have limited backing.
Accurately Predicting Ovulation: The Key to Conception
While the gender-swaying aspects of the Shettles method are debatable, accurately predicting ovulation is crucial for increasing your chances of conceiving. Our ovulation calculator can help you identify your most fertile days, whether or not you're trying to influence your baby's sex.
Trying to Conceive? Let us Help!
Our Pregnancy Calculator & Ovulation Estimator offers comprehensive support for your reproductive health planning. Use it to pinpoint your fertile window and ovulation day based on your unique cycle length, and utilize our interactive six-month calendar to visualize your fertile days.
Alternative Methods for Family Planning
For couples seeking highly accurate gender selection, preimplantation genetic diagnosis (PGD) during in vitro fertilization (IVF) offers a scientifically validated approach. However, it is an invasive and expensive procedure.
Key Takeaways
- The Shettles method is a popular but scientifically unproven method for gender selection.
- Accurate ovulation prediction is essential for conception, regardless of gender preferences.
- Our Pregnancy Calculator & Ovulation Estimator can help you identify your fertile window and ovulation day.