Women who take aspirin before sex are more likely to give birth to a baby boy.

In a recent study U.S. researchers found women with a history of miscarriages were more likely to give birth to a male child after taking aspirin around the time of conception compared with women given a placebo, reports Daily Mail.

In fact, aspirin increased the likelihood of having a boy by nearly a third, reports the Journal of Clinical Investigation.

Previous research showed that recurrent miscarriage is linked to increased inflammation in the womb.

The theory is that the immune system sees the developing embryo as a foreign body, attacking it with inflammatory compounds and immune cells.

This inflammation may further reduce the likelihood of the woman having a boy because male foetuses are thought to be more vulnerable.

In the latest study, researchers at the Eunice Kennedy Shriver National Institute of Child Health and Human Development in the U.S. gave 1,228 women who had a history of miscarriages a low-dose aspirin to take before sex or a placebo pill (folic acid) for as long as they were attempting to get pregnant.

Thirty-one per cent on aspirin had a boy, compared to 23 per cent on the placebo. And those on aspirin who had boys had reduced inflammation, suggesting the drug had an effect.

Aspirin before conception seems to ensure the chance of a male embryo being rejected is reduced, says Professor Simon Fishel, president of CARE Fertility clinics.

‘It is a very interesting conclusion and more studies are needed to confirm if it is a potential solution to the apparent excess of female babies for women with evidence of inflammation.

‘Importantly, it relates only to women who have had miscarriages and evidence of inflammation. It does not have any bearing on sex ratios in normal conceptions where aspirin will not increase the chances of having a boy.’

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  • Interesting article. I hope people don’t try this without medical advice


  • I thought the sperm determined the sex of the baby.
    Why would you risk thinning your blood unless advised by a medical professional to do so.


  • Interesting read. It applies just to a small amount of the population anyway.


  • My goodness the human body is complicated.


  • 1. no mention of how often for conceiving a girl (could be same number)
    2. Low level statistics.
    3. I can understand how reducing inflammation can help with conception but how does this affect gender
    4. Gender is in the SPERM. so again how is this affected by what the mother takes? I’d like to see an explanation for that.
    5. This on the back of an article which said that panadol/paracetamol during pregnancy was dangerous!


  • I would not want to add a medication to the mix when trying to conceive.


  • Very glad that the last paragraph concludes that it only pertains to those at risk of miscarriage as some people around the world might actually try using aspirin as a means of having a particular sex.


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