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21 June 2018

Are prem babies less successful later in life?

Babies born prematurely may lag behind educationally and professionally.

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Babies born prematurely or very small may not fare as well in life as those born full-term, a new research review suggests.

Not destined to struggle

Adults who were born tiny or early may be more likely to lag behind educationally and professionally, according to the review of 23 prior studies from eight countries.

Preterm birth occurs before the 37th week of pregnancy. The difficulties reported in the new study were greater for those born very prematurely – before 32 weeks.

Despite the findings, study lead author Dieter Wolke stressed that people born early or at a low birth weight are not destined to struggle in adulthood.

The findings appear in the June edition of Pediatrics.

"Most preterm-born adults are in employment and live independently. Most do well according to these markers," said Wolke, a professor of psychology at the University of Warwick. 

Research findings

The studies involved more than 5.9 million adults in all. They were conducted across the United States, the United Kingdom, Canada, Denmark, Finland, Germany, Norway and Sweden.

Nearly 272 000 participants had been born before 37 weeks or weighed less than 2.26kg.

In adulthood, this group was less likely to have gone on to college, less likely to have a job, and more likely to receive social benefits, compared with their full-term peers, the study review found.

These odds tended to rise with the degree of prematurity, especially educationally.

The achievement markers were viewed as stand-ins for overall adult wealth. In other words, preemies were more likely to have financial problems as adults than babies carried to full-term.

Dr Lisa Waddell, deputy medical officer of the March of Dimes, said, "They point out a clear association between preterm birth and adverse consequences down the road."

"This points out the impacts of preterm birth may have a long-term impact on the child into adulthood," added Waddell, who wasn't involved with the research.

Global image

Globally, about 11% of children are born prematurely. And nearly 9% of those are born in industrialised nations, according to the study. 15% of babies born in South Africa are premature. 

Wolke said prior research suggests "super-sensitive" parenting is critical for helping these early, undersized arrivals to do as well as their average full-term peers.

What exactly might explain the findings? Wolke noted, for example, that not all the studies analysed neurological deficits among preemies. That's one possible driver, among many, behind the findings, he said.

"Neurological deficits and disability will be part of the explanation," Wolke said. He added such deficits tend to be minor among premature babies born relatively close to full-term.

Waddell said the findings "really reinforce the urgent need to reduce the numbers of preterm births and especially those born very preterm".

Premature birth and its consequences are the leading contributor to deaths in the first year of life, she said. 

"If we are going to give every baby the best possible start in life and the opportunity to grow, we must support the health of women before, during and after their pregnancy," said Waddell.

Image credit: iStock

 
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