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February 10, 2007

BehindTheMedspeak: Are Vegetarians Smarter?

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It would appear so.

A study entitled "Childhood Intelligence and Being a Vegetarian," just published in the February 3, 2007 issue of the British Medical Journal, concludes that "Higher scores for IQ in childhood are associated with an increased likelihood of being a vegetarian as an adult."

Here's the abstract.

    IQ in childhood and vegetarianism in adulthood: 1970 British cohort study

    Objective: To examine the relation between IQ in childhood and vegetarianism in adulthood.

    Design: Prospective cohort study in which IQ was assessed by tests of mental ability at age 10 years and vegetarianism by self-report at age 30 years.

    Setting: Great Britain.

    Participants: 8170 men and women aged 30 years participating in the 1970 British cohort study, a national birth cohort.

    Main outcome measures: Self-reported vegetarianism and type of diet followed.

    Results: 366 (4.5%) participants said they were vegetarian, although 123 (33.6%) admitted eating fish or chicken. Vegetarians were more likely to be female, to be of higher social class (both in childhood and currently), and to have attained higher academic or vocational qualifications, although these socioeconomic advantages were not reflected in their income. Higher IQ at age 10 years was associated with an increased likelihood of being vegetarian at age 30 (odds ratio for one standard deviation increase in childhood IQ score 1.38, 95% confidence interval 1.24 to 1.53). IQ remained a statistically significant predictor of being vegetarian as an adult after adjustment for social class (both in childhood and currently), academic or vocational qualifications, and sex (1.20, 1.06 to 1.36). Exclusion of those who said they were vegetarian but ate fish or chicken had little effect on the strength of this association.

    Conclusion: Higher scores for IQ in childhood are associated with an increased likelihood of being a vegetarian as an adult.

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For those who prefer the real thing, here's a link to the original article.

Like Mikey said — "Eat your peas."

February 10, 2007 at 12:01 PM | Permalink


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