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doctor have long known that preterm babies face increased health risks after in life , but now , new inquiry from the Netherlands read that post - term babe —   those born after a 42 - week gestation   — also have a higher endangerment of produce behavioral and emotional problems , compared with kid born at term .

The study showed that post - term sister were more than twice as probable to have behavioral problems at 18 to 36 month old compared with full term babies . And post - term babe were almost 2.5 time as probable to have attention – shortage / hyperactivity upset ( ADHD ) at these ages .

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The solvent held even after the researchers controlled for a issue of factors , including the mothers ' weight , inebriant consumption and smoking frequency . However , the researchers said that other factors , including themothers ' nutrition during pregnancy , could n’t be ruled out as playing a purpose in the findings .

Doctors do n’t have sex what causes post - term parentage , but the researchers said it ’s imperative to work out this . " It is also significant that further research is carry out so as to demonstrate a causal relation between post - term nascence andbehavioral problems , " jumper cable author Hanan El Marroun , a child shrink at Erasmus MC , a aesculapian center in Rotterdam , said in a statement .

Previous research has establish that both preterm and post - term births are linked with other wellness issues , and research has also shown that several long - term issue are consort with preterm births , such as a higher risk of cerebral palsy , sensory deterioration and behavioral problem .

In this photo illustration, a pregnant woman shows her belly.

It ’s less cleared whether there are similar longsighted - term issues associated with post - term births , though a recent study , in which researchers chase after referral to a neurologist or psychologist in Sweden , discover that 13 percent of post - term children had a neurological or developmental disorderliness at age 5 .

In the raw study , researchers looked at pregnant women in Rotterdam who were due to give nascency between April 2002 and January 2006 . Of the 5,145 baby born , the research worker ground that 4.4 pct wereborn preterm , and 7.4 pct were born post - condition .

The mother filled out a questionnaire , call the Child Behavior Checklist , when their tot were 18 months and 36 months quondam . Father also filled out the form at the 36 - month home run .

A baby girl is shown being carried by her father in a baby carrier while out on a walk in the countryside.

The checklist asked questions about the child ’s behavior in the preceding two calendar month , and is widely used to name emotional problems , developmental problems and ADHD .

The research worker found that both preterm and post - term babies are at a higher jeopardy for developing " problem behavior , " compared with full term - born infant .

The determination were trammel in that the parent be intimate if their children were born post - term , and thus could have been biased to account more behavioral upshot , the researchers noted . However , it ’s improbable that they did this because " the notion that a post - term parentage may signal at - danger babe is largely nonexistent in the aesculapian profession , and absent in the public disputation , " the authors wrote in their study , published Wednesday ( May 2 ) in the International Journal of Epidemiology .

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Pass it on : Babies tolerate more than two week after their due date may present an increased risk of demeanor problems .

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