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Study shows even moderate drinking in pregnancy can affect child's IQ

Alcohol Action Ireland said there are no known safe levels of alcohol during pregnancy and their position is that pregnant women should abstain.

DRINKING JUST ONE or two glasses of wine a week while pregnant can influence a child’s IQ, according to a new study by researchers from Oxford and Bristol Universities.

The study, published in PLoS ONE, shows that even moderate alcohol consumption can lead to a reduction in a child’s IQ, if the child has certain genetic variations that affect their ability to break down alcohol.

A spokesperson for Alcohol Action Ireland said their position is that there are “no known safe levels of alcohol during pregnancy” as alcohol crosses the placenta.

A report published by the Department of Health in February this year explored how alcohol exposure can affect the foetus through the occurence of a range of disorders.

The most serious effects are the intellectual disabilities associated with the adverse impact of alcohol on foetal brain development and the central nervous system.

The report said “screening for alcohol consumption should begin at the first antenatal visit for all pregnant women and be reviewed throughout the pregnancy”.

Previous studies from around the world on the effects of moderate alcohol intake on a child’s IQ have produced conflicting results. This may be because it is difficult to separate the effects of moderate drinking from other lifestyle and social factors, such as smoking, diet, affluence, and mother’s age and education.

This study, believed to be the first substantial one of its kind, used genetic variation to investigate the effects of drinking 1–6 units of alcohol per week among a large group of over 4,000 women. Heavy drinkers were not included.

A small, 125ml glass of wine is around 1.5 units while a pint of beer of standard strength is approximately 2 units.

Researchers in the study identified four genetic variations that had an adverse affect on a child’s IQ. The child’s IQ was on average almost two points lower for each variation they possessed.

There was no evidence of this among mothers who abstained during pregnancy, strongly suggesting that the exposure to alcohol in the womb lead to the difference in IQ.

The mothers’ alcohol intake was based on questionnaires completed when they were 18 weeks and 32 weeks pregnant.

The children’s IQ was tested when they were aged eight using a shortened version of the Wechsler Intelligence Scale for Children.

Related: Childhood behavioural problems linked to smoking during pregnancy>

Read: Over 220 million women have an ‘unmet need for family planning’>

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46 Comments
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    Mute Frank O'Hara
    Favourite Frank O'Hara
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    Dec 14th 2024, 9:05 PM

    Shocking stuff from Leinster. They weren’t at the races at all today and they were totally outmuscled physically by Clermont. The set-piece was an embarrassment and the attack was dysfunctional again. We weren’t helped at all to be fair by Pearce’s disgraceful refereeing, but a bonus-point win should be a given in all of the Champions Cup pool stage games. Barrett, Ryan and Henshaw were the only good players in a match littered with mistakes.

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    Mute Mark Murphy
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    Dec 15th 2024, 12:01 AM

    @Frank O’Hara: Pearce is the new Wayne Barnes.

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    Mute John Moore
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    Dec 15th 2024, 2:27 PM

    @Frank O’Hara: It’s not quite accurate to say that the set piece was an embarrassment. The scrum actually went very well for a change. The lineout was poor though which is a recurring theme and a worry. Expecting bonus point wins as a given is a bit ridiculous though and is an attitude that would cause the team to take their eye off the ball.

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    Mute lesidees
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    Dec 14th 2024, 8:02 PM

    Could have been better, could have been worse

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    Mute Gavin Delves
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    Dec 14th 2024, 9:51 PM

    @Basildon Joe: unlike the useless Munster

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    Mute FoxyBoiiYT
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    Dec 14th 2024, 10:13 PM

    @Gavin Delves: Obsessed ye are. Just because ye have no real fans or history just money. Sad really

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    Mute Lulu
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    Dec 14th 2024, 10:17 PM

    @FoxyBoiiYT: Nice burn Foxy !!

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    Mute Joe Kelly
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    Dec 14th 2024, 11:06 PM

    @Gavin Delves: totally unnecessary remark from a sad little man

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    Mute N.F. Court
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    Dec 15th 2024, 7:24 PM

    @FoxyBoiiYT: lol…I think History is now in Leinster’s favour. Real fans fill their grounds….which Leinster regularly do. Leinster won that game playing quite poorly. The French are the yardstick for European Rugby over the last 4 years….so well done Leinster. Imagine what they will be like when they click back into gear..? Some Team. Hope Munster improve….

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    Mute N.F. Court
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    Dec 15th 2024, 7:25 PM

    @Joe Kelly: he was replying to a much crasser comment…..

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    Mute Patrick Kelly
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    Dec 14th 2024, 10:16 PM

    Nienaber knocking the skill level out of Leinster. He is a disaster.

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    Mute James T.Kirk
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    Dec 14th 2024, 11:52 PM

    @Patrick Kelly: Agree, hard to see what he has improved.

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    Mute Michael Murray
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    Dec 15th 2024, 2:51 AM

    @Patrick Kelly:…that’s is a valid and perceptive comment …..but and it’s a big but, Leo must be giving him the nod to do it.

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    Mute Pork Hunt
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    Dec 15th 2024, 8:13 AM

    Ireland will be lucky to reach a RWC 1/4 next time. Nienaber and IRFU are doing a great job in developing an over-hyped one trick pony in Leinster.

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    Mute den
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    Dec 15th 2024, 11:23 AM

    @Pork Hunt: jeez, ye munster phucks are a sad shower of whinging 5h1t£5. Get a life will ye.

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    Mute Pork Hunt
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    Dec 15th 2024, 7:32 AM

    Leinster need more International mercenaries.

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    Mute Peter Calvey
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    Dec 15th 2024, 4:13 PM

    If Cullen does win the Championship Cup this season.
    He has to go.
    With a squad like that.
    He should have win 2/3 of them.
    No more jobs for the boys.

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