Is there a link between ART-conceived children and increased risk of cancer?

Is there a link between ART-conceived children and increased risk of cancer?

Is there a risk of cancer in children and young adults conceived by assisted reproductive technology? Some very reassuring results have been released this month.

In the past 40 years, the IVF industry has grown and the use of assisted reproductive technology (ART) has increased dramatically. It is estimated that approximately over 6 million babies have been born as a result of ART and the number is growing.

Obviously, one of the main concerns that new parents or future parents have is the long term health implications of any child they conceive through IVF and a major fear that is raised is the increased risk of cancer. Previous studies have suggested that there could potentially be a link but fell short with the amount of information and data supplied, concluding that it is not clear whether other factors underlying sub-fertility were contributing causes.

A nationwide study was conducted in the Netherlands, looking at all children born as a result of ART between 1980 and 2001, and compared that with children who were naturally conceived born to sub-fertile women.

The results are in and it’s all good news: the study published in Human Reproduction found that there is no increased risk of cancer in children born through ART.

The study looked at almost 50,000 children born in that time period and the cancer risk in ART-conceived children was compared with the risks in children conceived naturally. They found that the overall cancer risk was not increased in children who were conceived through ART, neither compared to the naturally conceived children from sub-fertile women nor compared with the general public.

This large study has provided some very important results, which will enable fertility specialists to reassure their patients about the long term health of their children.

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FAQs about improving natural fertility

Will stress affect my ability to get pregnant?

Yes, chronic stress can impact fertility by disrupting hormonal balance and ovulation patterns. Managing stress through relaxation techniques, regular exercise, adequate sleep, and mindfulness practices may help optimise your chances of conception. Consider speaking with a counsellor if stress feels overwhelming.

How does my partner's health affect our fertility?

Sperm health accounts for about 40% of conception challenges. Your partner can improve sperm health by maintaining a healthy weight, avoiding excessive heat exposure (hot tubs, saunas, tight clothing), limiting alcohol, quitting smoking, managing stress, and taking a multivitamin with antioxidants. Sperm takes about 3 months to develop, so lifestyle changes need time to show results.

When during my cycle am I most fertile?

Your fertile window typically spans 5-6 days, ending on ovulation day. For a regular 28-day cycle, this usually falls between days 10-15, with peak fertility 1-2 days before ovulation. Track your cycle using ovulation predictor kits, basal body temperature, or cervical mucus changes to identify your unique pattern. Having intercourse every 1-2 days during this window optimises your chances.