Navigation Links
Teenage boys who eat fish at least once a week achieve higher intelligence scores
Date:3/9/2009

Fifteen-year-old males who ate fish at least once a week displayed higher cognitive skills at the age of 18 than those who it ate it less frequently, according to a study of nearly 4,000 teenagers published in the March issue of Acta Paediatrica.

Eating fish once a week was enough to increase combined, verbal and visuospatial intelligence scores by an average of six per cent, while eating fish more than once a week increased them by just under 11 per cent.

Swedish researchers compared the responses of 3,972 males who took part in the survey with the cognitive scores recorded in their Swedish Military Conscription records three years later.

"We found a clear link between frequent fish consumption and higher scores when the teenagers ate fish at least once a week" says Professor Kjell Torn from the Sahlgrenska Academy at the University of Gothenburg, one of the senior scientists involved in the study. "When they ate fish more than once a week the improvement almost doubled.

"These findings are significant because the study was carried out between the ages of 15 and 18 when educational achievements can help to shape the rest of a young man's life."

The research team found that:

  • 58 per cent of the boys who took part in the study ate fish at least once a week and a further 20 per cent ate fish more than once a week.
  • When male teenagers ate fish more than once a week their combined intelligence scores were on average 12 per cent higher than those who ate fish less than once a week. Teenagers who ate fish once a week scored seven per cent higher.
  • The verbal intelligence scores for teenagers who ate fish more than once a week were on average nine per cent higher than those who ate fish less than once a week. Those who ate fish once a week scored four per cent higher.
  • The same pattern was seen in the visuospatial intelligence scores, with teenagers who ate fish more than once a week scoring on average 11 per cent higher than those who ate fish less than once a week. Those who ate fish once a week scored seven per cent higher.

"A number of studies have already shown that fish can help neurodevelopment in infants, reduce the risk of impaired cognitive function from middle age onwards and benefit babies born to women who ate fish during pregnancy" says Professor Torn.

"However we believe that this is the first large-scale study to explore the effect on adolescents."

The exact mechanism that links fish consumption to improved cognitive performance is still not clear.

"The most widely held theory is that it is the long-chain polyunsaturated fatty acids found in fish that have positive effects on cognitive performance" explains Professor Torn.

"Fish contains both omega-3 and omega-6 fatty acids which are known to accumulate in the brain when the foetus is developing. Other theories have been put forward that highlight their vascular and anti-inflammatory properties and their role in suppressing cytokines, chemicals that can affect the immune system."

In order to isolate the effect of fish consumption on the study subjects, the research team looked at a wide range of variables, including ethnicity, where they lived, their parents' educational level, the teenagers' well-being, how frequently they exercised and their weight.

"Having looked very carefully at the wide range of variables explored by this study it was very clear that there was a significant association between regular fish consumption at 15 and improved cognitive performance at 18" concludes lead author Dr Maria Aberg from the Centre for Brain Repair and Rehabilitation at the University of Gothenburg.

"We also found the same association between fish and intelligence in the teenagers regardless of their parents' level of education."

The researchers are now keen to carry out further research to see if the kind of fish consumed - for example lean fish in fish fingers or fatty fish such as salmon - makes any difference to the results.

"But for the time being it appears that including fish in a diet can make a valuable contribution to cognitive performance in male teenagers" says Dr Aberg.


'/>"/>

Contact: Annette Whibley
wizard.media@virgin.net
Wiley-Blackwell
Source:Eurekalert

Related biology news :

1. Study reveals that immigrant teenagers eat better than Spanish teenagers
2. K-State research: Freshwater pollution costs US at least $4.3 billion a year
3. Eat oily fish at least once a week to protect your eyesight in old age
4. Failure of the 1st attempt at assisted reproduction justifies at least 1 additional cycle
5. 100 percent of people carry at least 1 type of pesticide
6. Girls prefer pink, or at least a redder shade of blue
7. Milestone achieved toward production of malaria treatment using synthetic biology and fermentation
8. Carnegies Donald Brown receives lifetime achievement award from Society for Developmental Biology
9. Biologist enhances use of bioinformatic tools and achieves precision in genetic annotation
10. Chemistry professor 1 of only 3 at UH to achieve prestigious AAAS status
11. Childrens Hospital scientists achieve repair of injured heart muscle in lab tests of stem cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... , June 2, 2016 Perimeter ... Platforms, Unmanned Systems, Physical Infrastructure, Support & Other Service  ... visiongain offers comprehensive analysis of the global ... market will generate revenues of $17.98 billion in 2016. ... DVTEL Inc, a leader in software and hardware technologies ...
(Date:5/16/2016)... 16, 2016   EyeLock LLC , a market ... opening of an IoT Center of Excellence in ... the development of embedded iris biometric applications. ... convenience and security with unmatched biometric accuracy, making it ... from DNA. EyeLock,s platform uses video technology to deliver ...
(Date:4/28/2016)... and BANGALORE, India , April 28, ... Systems, a product subsidiary of Infosys (NYSE: INFY ... announced a global partnership that will provide end ... use mobile banking and payment services.      (Logo: ... key innovation area for financial services, but it also plays ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample tracking software company, ... Crime Laboratory, has joined STACS DNA as a Field Application Specialist. , “I ... President and COO of STACS DNA. “In further expanding our capacity as a scientific ...
(Date:6/23/2016)... BEACH, Calif. , June 23, 2016  Blueprint ... new biological discoveries to the medical community, has closed ... co-founder Matthew Nunez . "We have ... us with the capital we need to meet our ... will essentially provide us the runway to complete validation ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... exhibiting at the Pennsylvania Convention Center and will showcase its product’s latest features ... will also be presenting a scientific poster on Disrupting Clinical Trials in The ...
(Date:6/23/2016)... 22, 2016  Amgen (NASDAQ: AMGN ) ... QB3@953 life sciences incubator to accelerate the development ... laboratory space at QB3@953 was created to help high-potential ... for many early stage organizations - access to laboratory ... Amgen launched two "Amgen Golden Ticket" awards, providing each ...
Breaking Biology Technology: