This updated guide separates myth from evidence on choosing baby gender. Heart-rate lore and chart methods are not supported by reliable data. Timing intercourse (Shettles-style) does not consistently influence sex. The only dependable method is medical: IVF with preimplantation genetic testing (PGT). Sperm-sorting techniques exist but are less definitive and variably available. Ethical, legal, and cost considerations make counseling with a fertility specialist important.

What works - and what doesn't

Expecting parents often ask whether they can influence their baby's sex. Short answer: most folk methods don't reliably work. Heart-rate myths - saying a fetal heartbeat above or below 140 bpm predicts a girl or boy - have no scientific backing and are not used to determine sex.

Nonmedical approaches such as Chinese gender charts, folklore calendars, and old "timing" rules remain popular. They can be fun to try, but high-quality studies have not shown consistent, reproducible effects for these approaches.

Timing and the Shettles idea

One longstanding theory (often called the Shettles method) claims that male (Y-bearing) sperm swim faster but live shorter, while female (X-bearing) sperm swim slower and live longer. Based on that idea, timing intercourse right before ovulation is said to favor boys, while intercourse several days before ovulation would favor girls.

Modern research has not confirmed reliable sex-selection effects from timing intercourse alone. Large, well-controlled studies fail to reproduce consistent benefits from timing, so couples should treat the method as unproven rather than guaranteed. If timing is important to you, consult a clinician about accurate ovulation tracking rather than relying on folklore.

Medical methods that can select sex

The only reliable way to choose a baby's sex is through medical reproductive technology. Two commonly discussed medical options are:
  • IVF with preimplantation genetic testing (PGT). Embryos created by in vitro fertilization can be tested for chromosomal sex before transfer, allowing selection of embryos of the desired sex. PGT is widely used in fertility clinics for medical and nonmedical reasons; it is the most accurate method available for sex selection.
  • Sperm-sorting techniques and laboratory enrichment methods. Flow cytometry-based sperm sorting (e.g., MicroSort) and other enrichment approaches have been studied to increase the proportion of X- or Y-bearing sperm. These methods are not as definitive as PGT and have limited availability and variable success in practice. 1

Practical, ethical and legal considerations

Medical sex selection raises ethical questions and, in some countries or clinics, legal restrictions. Many reproductive specialists advise careful counseling before attempting sex selection for nonmedical reasons. Costs, the invasiveness of IVF, and clinic policies vary widely - talk to a licensed fertility specialist to learn what is available and appropriate for your situation. 2

Bottom line

If you want a reliable outcome, reproductive medicine (IVF + PGT) is the established route. For low-cost, nonmedical approaches (timing, charts, fetal heart-rate folklore), evidence is weak and inconsistent. Discuss goals and options openly with a medical professional to make an informed choice.
  1. Confirm current reported accuracy rates for preimplantation genetic testing (PGT) in identifying embryo sex and update any percentage-based claims.
  2. Verify the current clinical availability and regulatory status of sperm-sorting technologies (e.g., MicroSort) in major jurisdictions.
  3. Check legal restrictions and clinic policies on nonmedical sex selection for key countries/regions to provide specific guidance if needed.

FAQs about Choose Baby Gender

Does fetal heart rate predict a baby's sex?
No. The idea that fetal heart rate above or below 140 bpm predicts sex is a myth and not supported by scientific evidence.
Can timing intercourse reliably select a boy or girl?
No. The Shettles timing method is popular but studies have not shown consistent, reproducible results. Timing alone is not a reliable method.
What medical options reliably select baby sex?
IVF combined with preimplantation genetic testing (PGT) can identify an embryo's chromosomal sex before transfer and is the most reliable option. Sperm-sorting methods exist but are less definitive and less widely available.
Are there legal or ethical limits to choosing a baby's sex?
Yes. Many clinics and jurisdictions restrict nonmedical sex selection or require counseling. Laws and policies vary, so consult a fertility specialist about local rules and ethical considerations.
If I don't want invasive or expensive methods, are there low-cost alternatives?
Low-cost alternatives like charts or timing methods are widely promoted but lack strong evidence. They should be considered unproven and not relied on for guaranteed results.

News about Choose Baby Gender

You Can Choose Your Baby's Gender With IVF, But There Are Ethical Concerns - Health: Trusted and Empathetic Health and Wellness Information [Visit Site | Read More]

Can you really choose the sex of your baby ? - Daily Mail [Visit Site | Read More]

30 Gender Reveal Ideas We Love - The Bump [Visit Site | Read More]

How to Have a Girl — Experts Explain The Science Of Sex Selection - TODAY.com [Visit Site | Read More]

Ways to ‘choose’ your baby's gender - MadeForMums [Visit Site | Read More]

Influencer Caitlin Bailey faces criticism for choosing baby’s gender via IVF - Bounty Parents [Visit Site | Read More]