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Related Experiment Videos

Mortality in British vegetarians.

Paul N Appleby1, Timothy J Key, Margaret Thorogood

  • 1Imperial Cancer Research Fund, Cancer Epidemiology Unit, The Radcliffe Infirmary, Oxford, UK. appleby@icrf.icnet.uk

Public Health Nutrition
|May 11, 2002
PubMed
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British vegetarians exhibit lower mortality rates than the general population. Their overall death rates are comparable to non-vegetarians, indicating lifestyle factors may contribute to this health benefit.

Area of Science:

  • Nutritional Science
  • Epidemiology
  • Public Health

Background:

  • Vegetarian diets are associated with various health benefits.
  • Understanding the long-term mortality risks associated with vegetarianism is crucial for public health.
  • Comparative mortality data between vegetarians and non-vegetarians in the UK population are limited.

Purpose of the Study:

  • To compare the all-cause mortality and cause-specific mortality of British vegetarians and non-vegetarians.
  • To investigate potential lifestyle factors influencing mortality differences.

Main Methods:

  • Analysis of original data from two large prospective UK cohorts: the Oxford Vegetarian Study and the Health Food Shoppers Study.
  • Inclusion of over 21,000 participants (aged 16-89), with more than 8,000 vegetarians.

Related Experiment Videos

  • Calculation of Standardised Mortality Ratios (SMRs) against the general population and Death Rate Ratios (DRRs) between vegetarians and non-vegetarians for 14 major causes of death.

    • Main Results:

    • Both vegetarian cohorts showed significantly lower SMRs for all causes of death compared to the general population (SMRs of 52 and 59).
    • The DRRs for all causes of death between vegetarians and non-vegetarians were close to one in both studies (1.01 and 1.03).
    • No significant differences in mortality rates were observed between vegetarians and comparable non-vegetarians for major causes of death.

    Conclusions:

    • British vegetarians experience substantially lower overall mortality compared to the general population.
    • Mortality rates for vegetarians are similar to those of comparable non-vegetarians within the study cohorts.
    • The observed mortality benefits in vegetarians may be influenced by non-dietary factors, including lower smoking prevalence, higher socioeconomic status, and other dietary aspects beyond meat/fish avoidance.