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:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/15/2016)... , April 15, 2016  A new partnership ... more accurate underwriting decisions in a fraction of ... competitively priced and high-value life insurance policies to ... With Force Diagnostics, rapid testing (A1C, ... data readings (blood pressure, weight, pulse, BMI, and ...
(Date:4/14/2016)... , April 14, 2016 ... Malware Detection, today announced the appointment of Eyal ... new role. Goldwerger,s leadership appointment comes at ... heels of the deployment of its platform at several ... biometric technology, which discerns unique cognitive and physiological factors, ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... ... May 03, 2016 , ... ... skill-building and compliance training platform on mobile devices, today released a new interactive ... Requirements for Medical Devices. The course is essential for owners or operators of ...
(Date:5/3/2016)... ... May 03, 2016 , ... Flagship Biosciences, the leader ... to its Board of Directors. Dr. Gillett recently retired from Charles River Laboratories ... and Chief Scientific Officer. A board-certified veterinary pathologist, Dr. Gillett joined Charles River ...
(Date:5/3/2016)... LONDON , May 3, 2016 ... Report Assessing Developers and Producers of Those Competitor Biologics  ... Guide to Companies, Activities and Prospects ,  ... drug companies? And what are their sales potentials? ... There you see results, trends, opportunities and revenue forecasting. ...
(Date:5/3/2016)... , ... May 03, 2016 , ... ... fertility clinics and IVF laboratories. A contingency of reproductive endocrinologists, including Dr. ... and women experiencing infertility and to help them build families. , Ovation Fertility ...
Breaking Biology Technology: