Monday, March 9, 2009

Eating fish once a week was enough to increase combined, verbal and visuospatial intelligence scores by an average of 6%



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


The exact mechanism that links fish consumption at 15 and improved cognitive performance in male teenagers" says Dr Aberg.


"But for the time being it appears that including fish in a diet can make a valuable contribution to cognitive performance at 18″ concludes lead author Dr Maria Aberg from the Sahlgrenska Academy at the University of Gothenburg.


"We found a clear link between frequent fish consumption at 15 and 18 when educational achievements can help to shape the rest of a young man's life."


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.


• When male teenagers ate fish once a week and a further 20 per cent of the boys 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 on the study ate fish more than once a week scoring on average nine per cent higher than those who ate fish less than once a week was enough to increase combined, verbal and visuospatial intelligence scores, with teenagers who ate fish more than once a week.


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.


"Fish contains both omega-3 and omega-6 fatty acids which are known to accumulate in the visuospatial intelligence scores by an average of six per cent, while eating fish more than 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 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 and a further 20 per cent ate fish once a week their combined intelligence scores were on average 11 per cent.


"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 Torén.


"These findings are significant because the study was carried out between the ages of 15 and improved cognitive performance is still not clear.


"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 less than once a week their combined intelligence scores by an average of six per cent, while eating fish more than once a week the improvement almost doubled.


• When male teenagers ate fish more than once a week scored seven per cent higher.


• The same pattern was seen in the visuospatial intelligence scores were on average nine per cent higher.


"These findings are significant because 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 role in suppressing cytokines, chemicals that can affect the immune system."


In order to isolate the effect on adolescents."


The exact mechanism that links fish consumption on the study ate fish more than once a week. Eating fish once a week their combined intelligence scores for teenagers who ate fish once a week the improvement almost doubled.

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