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:1/18/2017)... Park, KS (PRWEB) , ... January 18, 2017 ... ... managed firm offering asset protection and financial planning services to families and business ... a charity event aimed at supporting children with developmental disabilities. , The Lakemary ...
(Date:1/18/2017)... ... January 18, 2017 , ... The Hear the ... project with the donation of cochlear implants. In February 2017, the first three ... a fair chance of leading an independent life. This engagement builds on the ...
(Date:1/17/2017)... ... 2017 , ... Anesthesia Progress – Everyone wants less pain during ... option for each patient. Dentists have several general anesthesia alternatives and finding the right ... the Tokyo Dental College in Tokyo, Japan wanted to find out which anesthetic was ...
(Date:1/17/2017)... ... January 17, 2017 , ... ... , The company, owned and operated by Ed Stroup, was created to ... price with the highest level of customer service. Healthful Balance products can be ...
(Date:1/17/2017)... CA (PRWEB) , ... January 17, 2017 , ... ... County, as well as Palm Desert, is opening a new office in San ... deep transcranial magnetic stimulation (dTMS) in Southern California, successfully treating individuals struggling with ...
Breaking Medicine News(10 mins):
(Date:1/17/2017)... Jan. 17, 2017 EU5 Glucose Monitoring Market ... report, "EU5 Glucose Monitoring Market Outlook to 2022", provides ... The report provides value, in millions of US dollars, ... segments - Blood Glucose Meters, Blood Glucose Test Strips ... and distribution shares data for each of these market ...
(Date:1/17/2017)... 17, 2017 The interventional radiology products market ... from USD 6.35 billion in 2016, at a CAGR ... of this market are rising incidence of chronic diseases, ... surgeries. The global interventional radiology products market ... On the basis of type, the stents segment is ...
(Date:1/17/2017)... -- The Global Nebulizers Market is poised to grow ... decade to reach approximately $1698.68 million by 2025. Some ... include rapidly growing demand in emerging regions, increasing use ... and online marketing strategies by key players. ... pneumatic nebulizers, ultrasonic nebulizers and mesh nebulizers. Pneumatic nebulizers ...
Breaking Medicine Technology: