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

IQ in childhood and vegetarianism in adulthood:1970 British cohort study
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
0959-8138
245-248
Gale, Catharine R
5bb2abb3-7b53-42d6-8aa7-817e193140c8
Deary, Ian J.
027158ae-fbfb-40ea-98b1-32d2690499ac
Schoon, Ingrid
7d34edc7-0fbc-4ba1-8c0c-30746d693d11
Batty, G. David
605ce199-493d-4238-b9c8-a2c076672e83
Gale, Catharine R
5bb2abb3-7b53-42d6-8aa7-817e193140c8
Deary, Ian J.
027158ae-fbfb-40ea-98b1-32d2690499ac
Schoon, Ingrid
7d34edc7-0fbc-4ba1-8c0c-30746d693d11
Batty, G. David
605ce199-493d-4238-b9c8-a2c076672e83

Gale, Catharine R, Deary, Ian J., Schoon, Ingrid and Batty, G. David (2007) IQ in childhood and vegetarianism in adulthood:1970 British cohort study. BMJ, 334 (7587), 245-248. (doi:10.1136/bmj.39030.675069.55).

Record type: Article

Abstract

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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Published date: February 2007

Identifiers

Local EPrints ID: 61125
URI: http://eprints.soton.ac.uk/id/eprint/61125
ISSN: 0959-8138
PURE UUID: da3a08e2-79c6-479b-8818-d99dbf173966
ORCID for Catharine R Gale: ORCID iD orcid.org/0000-0002-3361-8638

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Date deposited: 19 Mar 2009
Last modified: 16 Mar 2024 02:49

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Contributors

Author: Ian J. Deary
Author: Ingrid Schoon
Author: G. David Batty

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