Navigation Links
Genes' Influence on Fears Changes Over Time
Date:4/8/2008

Their impact on childhood anxieties changes during adolescence, study found

TUESDAY, April 8 (HealthDay News) -- Genetic factors may help drive common fears, and new study finds, but the impact of these factors change with age.

Researchers looked at almost 2,500 twins born in Sweden from 1985 to 1986. The twins were assessed for levels of common fears at ages 8 to 9, ages 13 to 14, ages 16 to 17 and ages 19 to 20. The fears were divided into three categories: situational fears (i.e., fear of closed spaces, fear of flying); animal fears; and blood or injury fears (i.e., fears of dentists, injections and blood).

Overall, genetic factors influenced all three types of fears, but this influence didn't remain stable over time, found Dr. Kenneth S. Kendler, of the Virginia Commonwealth University of Medicine in Richmond, and colleagues.

"We identified one set of genetic risk factors that act in childhood and have a steep decline in influence with age. Furthermore, we see evidence for new sets of genetic risk factors 'coming on line' in early adolescence, late adolescence and early adulthood," the study authors wrote.

They found that as the twins grew older, the effects of their shared environment on their fears decreased, while the influence of their individual environment grew stronger.

"This is an expected pattern given that adolescence is a time of declining influence of the home environment as individuals spend less time with family and progressively make their own world, spending more time with friends," the study authors wrote.

They said more research is needed to determine the exact mechanisms by which genetics influences fears.

The study was published in the April issue of the journal Archives of General Psychiatry.

More information

Mental Health America has more about phobias.



-- Robert Preidt



SOURCE: JAMA/Archives journals, news release, April 7, 2008


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. More genes for Lou Gehrigs disease identified, according to Penn researchers
2. Data-handling technique finds genes to be team players in curbing brain cancer cell growth
3. Mitochondria play role in pathogenesis of AD and estrogen-induced neuroprotection
4. Breech Birth May Be Determined by Genes
5. Identical Genes From Parents May Raise Cancer Risk
6. Science of Sri Vidya Benefits DNA Genesis, Says Dr. Sunita Rana Agarwal
7. Organogenesis Names Regenerative Medicine Expert Dr. Damien Bates Vice President, Medical Affairs
8. Genes that protect against atherosclerosis identified
9. Genesis Pharmaceuticals Changes Auditors
10. Cell Genesys to Present at the Cowen and Company and the Lehman Brothers Healthcare Investor Conferences
11. Cardiogenesis Corporation Announces Rescheduled Fourth Quarter and Full Year 2007 Earnings Release
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/26/2017)... , ... July 26, 2017 , ... An inventor from ... and I haven’t yet seen an effective and dignified way to keep leeches in ... the LEECH CUP." , This invention provides an effective way to keep a leech ...
(Date:7/26/2017)... Ca (PRWEB) , ... July 26, 2017 , ... A ... lyophilization processes. Inconsistent results freeze drying samples and a lengthy freeze dry cycle are ... webinar will discuss freeze drying techniques, as well as new accessories and advancements in ...
(Date:7/26/2017)... ... July 26, 2017 , ... GTB ... cloud ; today announced the availability of its latest data protection solution Crypt-n-Chive. ... control console for Data Discovery, Classification, Encryption and Digital Rights Management; GTB Crypt-n-Chive ...
(Date:7/26/2017)... , ... July 26, 2017 , ... ... or “Isodiol”) a global cannabis innovator, specializing in the development of pharmaceutical and ... from April 1, 2017 to June 30, 2017. Iso International LLC recorded unaudited ...
(Date:7/25/2017)... (PRWEB) , ... July 25, 2017 , ... “Now Hiring!” ... St. Louis, Missouri. The company has achieved record-breaking sales for over 30 consecutive ... the next 12 months. , The upcoming year offers excitement and growth at HDIS, ...
Breaking Medicine News(10 mins):
(Date:7/20/2017)... -- Prime Therapeutics LLC (Prime) released this statement from its Chief ... for Clinical and Economic Review,s (ICER) public meeting ... of abuse-deterrent formulations (ADF) of opioids. Prime was the sole ... "The ICER data ... use of abuse-deterrent formulations (ADF) in opioids in terms of ...
(Date:7/14/2017)... 14, 2017 Endo International plc (NASDAQ: ENDP ... 8, 2017.  Members of its senior management team will host a ... 8:30 a.m. ET. The dial-in number to access ... (678) 509-7598, and the passcode is 45397076. Please dial in 10 ... A replay of the call will be available ...
(Date:7/13/2017)...  New York City-based market research firm Kalorama Information notes ... of.  From new products to new costs, to the threat ... completed study, Potential Pipeline Disruptors . Among ... 1.  Age-Driven Growth - True Impact Moment Arriving   ... impact the growing population and, to a more extreme extent, ...
Breaking Medicine Technology: