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:2/5/2016)... ... February 05, 2016 , ... After years as an active staff surgeon and ... cosmetic surgeon Dr. Wayne Carman transitioned to chief of the Division of Plastic Surgery ... three-year term as chief and began a second three-year term in January of 2016. ...
(Date:2/5/2016)... ... February 05, 2016 , ... Regular gym users know ... having to wait longer to access the treadmills. It’s a predictable trend. After the ... lose weight and get in shape by joining gyms, starting new walking or running ...
(Date:2/5/2016)... Atlanta, Georgia (PRWEB) , ... February 05, 2016 , ... ... pleased to announce their 2nd Annual No Cost Dental Day to individuals in need. ... 4pm. The purpose of this No Cost Dental Day is to provide dental care ...
(Date:2/5/2016)... ... , ... Health and wellness is a topic that should concern all Americans; ... experiencing an illness. Migraines are a severe form of a headache and often are ... wish the pain on their worst enemy, the feeling can last for many hours ...
(Date:2/5/2016)... CA (PRWEB) , ... February 05, 2016 , ... –This ... on the benefits of having a tankless water heater. To view the report, ... water heaters: tank and tankless. While each has their pros and cons, the type ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)... France , Germany , ... Israel ). It includes a 10-year epidemiology forecast for the total ... and sex in these markets. GD epidemiology report is written and developed ... transparent and market-driven, providing expert analysis of disease trends in the 7MM. ... Italy , Spain , UK, and ...
(Date:2/4/2016)... 4, 2016  Edwards Lifesciences Corporation (NYSE: EW ... heart disease and critical care monitoring, announced today that ... agreement with Morgan Stanley & Co. LLC to repurchase ... part of the Company,s previously authorized program to repurchase ... --> --> ...
(Date:2/4/2016)... , Feb. 4, 2016   Bernstein Liebhard LLP ... in the United States District Court for the District of ... (the "Class") consisting of all persons or entities who purchased ... (NASDAQ: INSY ) from March 3, 2015 through January ... certain of its officers with violations of the Securities Exchange ...
Breaking Medicine Technology: