Takeaway Some people believe that the rate of the fetus' heartbeat, as heard during an ultrasound scan, can indicate its sex. Research shows no evidence for this, and similar beliefs tend to be myths. Many people claim that they can predict a baby's sex using signs such as the size of the mother's breasts or the position of the fetus in the womb. However, little scientific evidence supports these claims.
Can you predict a baby's sex from their heart rate?
Tell us a little bit about your child. I agree to the Conditions of use I agree to receive communication about exclusive promotions, offers and products from Huggies and other Kimberly-Clark brands. Who knows just how this little idea came to pass, but it has been around for a very long time. This theory states that if the fetal heart rate is above beats per minute BPM , then the baby is more likely to be a girl. If the heart rate is below BPM then the chances are that the baby will be a boy. This is, after all, where the normal fetal heart rate commonly lies.