Navigation Links
Higher risk of autism among certain immigrant groups
Date:2/23/2012

A major register study from the Swedish medical university Karolinska Institutet shows that children born to certain groups of immigrants in Sweden had an increased risk of developing autism with intellectual disability. The study includes all children in Stockholm County from 2001 to 2007, and brings the question of the heredity of autism to the fore.

"This is an intriguing discovery, in which we can see strong links between a certain kind of autism and the time of the mother's immigration to Sweden," says principal investigator Cecilia Magnusson, Associate Professor of epidemiology at Karolinska Institutet. "The study is important, as it shows that autism isn't governed only by genetic causes but by environmental factors too."

The study, which is published in the scientific periodical The British Journal of Psychiatry shows that children of immigrant parents, particularly from countries of low human development, are disproportionately likely to develop autism with intellectual disability, a connection that appears to be related to the timing of migration rather than complications in childbirth. Children, whose mothers migrated just before or during pregnancy, ran the highest risk of all.

"At this juncture we can but speculate about the causes, but our assumption is that environmental factors impacting on the developing fetus, such as stress, new dietary habits or infections, could lead to the development of autism with intellectual disability," says Dr Magnusson.

At the same time, the results also show that that autism without intellectual disability (usually Asperger's syndrome) was less common in children of non-Swedish parents regardless of when the mother migrated to Sweden. According to the researchers, the latter probably can be attributed to the fact that foreign-born parents have less of a tendency to seek psychiatric care for their children than Swedish-born parents.

"We know far too little about autism, but we will continue to gather data on these children to find out more about its possible causes", says Dr Magnusson. "We know that the incidence of autism-spectrum disorders is rising sharply in high-income countries, probably largely because the diagnostic criteria have changed, although we can't rule out a genuine increase."

Of all the children examined in Stockholm, some 5,000 had received a diagnosis according to the different registers. In all, 589,114 children were included in the study.


'/>"/>

Contact: KI Press Office
pressinfo@ki.se
46-852-486-077
Karolinska Institutet
Source:Eurekalert

Related biology news :

1. Study finds Caribbean-American women at higher risk for elevated mercury levels
2. Diabetes risk factors in young Sri Lankans much higher than previously thought
3. Asthma rate and costs from traffic-related air pollution are much higher than once believed
4. Salt-tolerant crops show higher capacity for carbon fixation
5. Climate change driving tropical birds to higher elevations
6. New, higher estimates of endangered humpback whales in the North Pacific
7. The risk of suffering from insomnia is 67 percent higher if a family member is insomniac
8. Differences in cell response could explain higher rates of hypertension in African-Americans
9. Higher estrogen production in the breast could confer greater cancer risk than thought
10. Research finds veterinary medicine students experience higher depression levels than peers
11. Study explains why men are at higher risk for stomach cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/13/2017)... 13, 2017  RSA Conference -- RSA, a Dell ... designed to enhance fraud detection and investigation across ... RSA Fraud & Risk Intelligence Suite. The new ... additional insights from internal and external sources as ... their customers from targeted cybercrime attacks. ...
(Date:2/8/2017)... Feb. 7, 2017  Aware, Inc. (NASDAQ: AWRE ... reported financial results for its quarter and year ended December ... of 2016 was $3.9 million compared to $6.9 million in ... quarter of 2016 was $0.6 million compared to $2.6 million ... fourth quarter of 2016 was $0.5 million, or $0.02 per ...
(Date:2/7/2017)... 2017 Zimmer Biomet Holdings, Inc. (NYSE and ... present at the LEERINK Partners 6th Annual Global Healthcare ... Wednesday, February 15, 2017 at 10 a.m. Eastern Time. ... can be accessed at http://wsw.com/webcast/leerink28/zbh .  The webcast ... Zimmer Biomet,s Investor Relations website at http://investor.zimmerbiomet.com . ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... , Feb. 24, 2017  OncoSec Medical Incorporated ("OncoSec") ... will host a Key Opinion Leader event to highlight ... oral and poster presentation at the upcoming 2017 ASCO-SITC ... KOL event will be held in-person and via live ... / 9:00 AM PST at the Lotte New York ...
(Date:2/23/2017)... Feb. 23, 2017  MIODx announced today that ... key immunotherapy technologies from the University of California, ... method to monitor a patient for response to ... CTLA-4.  The second license extends the technology with ... likely to have an immune-related adverse event (IRAE) ...
(Date:2/23/2017)... ... February 23, 2017 , ... Baltimore ... multiple immunoassay-based threat detection technologies by researchers from the Pacific National Northwest ... detection technology was found to have the best level of detection (LOD) ...
(Date:2/23/2017)... , Feb. 23, 2017 Aviva ... tools, announced the acquisition of GenWay Biotech Incorporated, ... comprehensive service and product offering for both the ... will facilitate growth and enhance capabilities for both ... and ELISA assays will nicely complement ASB,s objective ...
Breaking Biology Technology: