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:5/26/2017)... ... May 26, 2017 , ... via seating ... mesh back 24/7 task chair specifically designed for clinical areas. Genie Copper Mesh ... to partner with Cupron® to provide customers with a game changing chair that ...
(Date:5/26/2017)... ... ... Lowe acts as host and helps educate and inform the public using the “Informed” ... reconnect with America as it explores some of the best places to hike and ... inventive new place for a family vacation, and have discovered hiking. Many will agree ...
(Date:5/26/2017)... ... ... What Happened in the Garden of Eden”: retells the stories of three Bible figures in ... published author, Penelope Colt, mother, trader, horse farmer, artist and a former GM journeyman. ... At six, they moved to Dayton, Ohio, where Penny graduated high school. At ...
(Date:5/24/2017)... New York (PRWEB) , ... May 24, 2017 , ... ... vascular surgery in New York City. He is known for his distinguished ... specialization in vascular surgery, Dr. Benvenisty holds sub-specialty training in treating renovascular disease and ...
(Date:5/24/2017)... Cortland, OH (PRWEB) , ... May 24, 2017 , ... ... in Cortland, OH, can now meet with Dr. Joseph Bedich for a consultation, ... smiles while simultaneously improving their oral health and functionality. , Dr. Bedich ...
Breaking Medicine News(10 mins):
(Date:5/11/2017)... 11, 2017  Thornhill Research Inc. ( ... an $8,049,024 USD five-year, firm-fixed-priced, indefinite-quantity/indefinite-delivery contract by ... Commercial Corporation (CCC) ( Ottawa, Ontario, Canada ... administer general anesthesia to patients requiring emergency medical ... US Marine Corps have been a longtime partner ...
(Date:5/10/2017)... 10, 2017 Radiology has become the number ... have also spiraled to the number one ranking as ... than ever before as the most complete and reliable ... with lower back pain an MRI may confirm a ... pain, resulting in entirely different treatment protocols.  In these ...
(Date:5/9/2017)... JERUSALEM , May 9, 2017  Oramed ... www.oramed.com ), a clinical-stage pharmaceutical company focused on ... today that the Canadian Intellectual Property Office has ... for Oral Administration of Exenatide". The patent covers ... analog. GLP-1 is an incretin hormone ...
Breaking Medicine Technology: