Research shows no evidence for this, and similar beliefs tend to be myths. However, little scientific evidence supports these claims. In this article, we look at the research into fetal heart rate as an indicator of sex. The belief is that a heartbeat slower than beats per minute indicates a male baby, while a faster heartbeat indicates a female baby. In , one study found no significant differences between male and female fetal heart rates.
Can you predict a baby's sex from their heart rate?
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Baby Heart Rate and Gender: Can It Predict the Sex of Your Baby?
Across the world there are differences in the sex ratio at different life stages. This imbalance in the male and female population can in some cases be traced back to birth: in some countries the number of boys and girls born each year is significantly skewed. In the map we see the differences in sex ratio at birth across the world.
The guessing game begins almost as soon as you get a positive result on a pregnancy test. Will it be a girl? Or a boy?