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It's a boy! The science of gender selection

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How to improve male fertility | Tommy's

Despite most parents ultimately just wishing for a healthy baby, there are many cultural and social factors that can drive the desire for a baby of a particular sex. The medical technology for sex selection of embryos has existed in Australia for many years, but such an option is only available for medical reasons, such as sex-linked chromosomal disorder. This leaves parents who do have a gender preference looking for natural ways of predetermining the sex of their baby. In the s, the idea that timing sex around ovulation can tip the odds in favour of a girl or a boy was popularised by Shettles and Rorvik in the best-selling book How to Choose the Sex of Your Baby. However, Y sperm live fast and die young. If sex occurs a number of days before ovulation, the Y sperm die off before they reach the egg, maximising the chances for X sperm to achieve fertilisation. Leaving aside the quandary raised by conceiving opposite-sex fraternal twins via this method, what does the science say on whether timing sex can result in a shift in the gender ratio?
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Boy or Girl — Can You Choose Your Baby’s Sex?

Improving your health can improve your fertility ability to get pregnant and the future health of your child. To get support to quit smoking sign up for the NHS Smoke-free emails. Secondhand smoke is highly toxic. If you smoke and your partner does not, you need to be aware that secondhand smoke also known as passive smoking can affect their fertility and health. Breathing in the smoke from your cigarettes can damage their ability to get pregnant.
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Find your bookmarks in your Independent Premium section, under my profile. So it all comes down to the banana. The yellow fruit with the phallic shape — appropriate in this context — is the best dietary aid for intending mothers wanting a boy, according to research published yesterday. In what they claim is the first scientific evidence that diet influences infant gender, researchers at the Universities of Exeter and Oxford have found that women who consume more calories around the time of conception, and, in particular, eat more bananas, are more likely to have sons.
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