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Benefits and Barriers to the Consumption of A Public Health Nutrition: 6(5), 505–511 DOI: 10.1079/PHN2002452 Benefits and barriers to the consumption of a vegetarian diet in Australia Emma Lea* and Anthony Worsley School of Health Sciences, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia Submitted 9 May 2002: Accepted 5 December 2002 Abstract Objective: The aim of this study was to examine consumers’ perceived benefits and barriers to the consumption of a vegetarian diet. Design: Survey (written questionnaire) that included questions on perceived benefits and barriers to the consumption of a vegetarian diet. Setting: South Australia. Subjects: Six hundred and one randomly selected South Australians. Results: The main perceived barriers to adopting a vegetarian diet were enjoying eating meat and an unwillingness to alter eating habits. This was the case for men, women and all age groups, although there were sex and age differences present in over half of the barrier items. For example, family food preferences were a greater problem for women than for men, while the oldest group was more likely to agree that humans are ‘meant’ to eat meat than the younger groups. The main benefits associated with vegetarian diets were health benefits: increased fruit and vegetable intake, decreased saturated fat intake, weight control. Animal welfare-related benefits and disease prevention were also important. Age and sex differences were apparent, Keywords although age differences were more important than sex differences. Beliefs Conclusions: The majority of respondents perceived there to be health benefits Benefits Barriers associated with the consumption of a vegetarian diet, but also, predictably, enjoyed Meat eating meat. Given this, it is likely that interest in plant-based diets that contain some Vegetarian meat is higher than that in no-meat diets. An understanding of the perceived benefits Plant-based diets and barriers of consuming a vegetarian diet will allow the implementation of Health strategies to influence meat and vegetarianism beliefs, dietary behaviour and, hence, Survey public health. Australia In recent years there appears to have been a move by plant foods. The knowledge gained may lead to the consumers away from red meat, accompanied by a implementation of more effective health promotion growing awareness of vegetarianism. Vegetarians exclude programmes. The aim of this paper is to examine data meat, fish and fowl from their diet, basing their diet mainly on Australian consumers’ perceived benefits and barriers on plant foods, although perhaps due to this growing to the consumption of a vegetarian diet, as this has awareness some people wish to identify as ‘vegetarian’ consequences for the consumption of plant-based diets despite including some animal flesh (particularly fish and and plant foods in general. fowl) in their diet1–3. There is evidence to suggest that the Perceived benefits and barriers to change have been prevalence of vegetarianism has increased in countries examined in many studies of dietary change17 – 23. such as the USA and Britain4–7. This dietary change has Perceived benefits of dietary changes and of healthy implications for public health, the food supply and the eating may include being healthy, disease prevention, environment3,8,9. Diets with an emphasis on plant foods weight control and improved quality of life23. To our are recognised by many researchers, government and knowledge, the only study that has examined the health organisations as providing important health perceived benefits of vegetarian diets among the general benefits, such as a reduction in the risk of contracting population is that conducted by Kalof et al.24,25. Their cardiovascular disease10– 16. In order to realise these random population survey of 420 US residents looked at benefits, it is important that studies are conducted which four benefits and found that around 45% of the sample examine the attitudes of consumers towards meat and somewhat or strongly agreed with each of the following: *Corresponding author: Email [email protected] q The Authors 2003 506 E Lea and A Worsley vegetarian diets help prevent cruelty to farm animals; the this study did not examine the benefits and barriers to consumption of a vegetarian diet helps to increase food plant foods per se, it is likely that the results will have some availability and to reduce hunger problems world-wide; relevance to plant foods and plant-based diets that may vegetarian diets are less harmful to the environment than contain some meat. are diets that contain meat. Around 60% at least partially agreed with the fourth item: that a vegetarian diet tends to Methods be healthier than a diet that includes red meat24,25. It has been argued that it is only when the benefits of Procedure change outweigh the barriers that a change in behaviour One thousand individuals were randomly selected from occurs26 – 29. People often face barriers when they try to the South Australian population by using the software change their food consumption18 – 20. Indeed, applications package Marketing Pro (April 1999 version, Desktop of the transtheoretical model of behavioural change Marketing Systems Pty Ltd), which contains a com- (‘stage of change’ model, which posits behavioural change prehensive list of residences from the telephone occurring through five separate stages: pre-contemplation, directory. contemplation, preparation, action and maintenance30,31) A questionnaire entitled Food Choice, Information and specify ways to deal with such perceived barriers32. These Your Attitudes, a cover letter and a reply-paid envelope barriers may be practical or attitudinal. For example, one were mailed to each person in the sample in mid-1999. attitudinal barrier to dietary change is the belief commonly A number of follow-ups to the original mailing, including a held by consumers that their diet is already balanced or replacement questionnaire, were conducted in order to healthy18,33,34, while irregular working hours is an improve the response rate. Full details have been reported important practical barrier19. The main perceived barriers elsewhere37. to eating a healthy diet in a European Union (EU) survey related to lack of time and to taste35. Time has also been The questionnaire found to be a major barrier to the more specific health Full details of the questionnaire have been given behaviour of consuming more fruit and vegetables, with previously37,38. In brief, the questionnaire included inconvenience also important17.* 25 items about personal barriers to vegetarian diets, The perceived benefits and barriers that the general some of which were similar to the Institute of European population has to eating a vegetarian diet have not been Food Studies (IEFS) EU survey on attitudes to food, examined in depth before, to our knowledge. It was nutrition and health34. Twenty-four items were used to posited that some barriers were likely to be the same as assess the perceived benefits of vegetarian diets, including barriers to other dietary behaviours, such as those personal benefits and those with wider implications. Some mentioned above (e.g. a perception of inconvenience), of these items were also modelled on the IEFS survey34. while others would be more specific to vegetarianism. For Five-point Likert-type scales were used to assess example, since meat is traditionally a central element of a agreement/disagreement on the items. Respondents meal in Western society36, not knowing what to replace were asked to identify themselves as non-vegetarian, meat with may be one of the barriers to becoming semi-vegetarian or vegetarian (no definition was pro- vegetarian. An examination of the perceived barriers and vided), and the frequency of consumption of animal benefits of consuming a vegetarian diet will allow the products (red meat, white meat, fish/seafood, eggs, dairy) implementation of strategies to influence meat and was measured. Level of interest in vegetarianism was vegetarianism beliefs and dietary behaviour. Although gauged (‘not interested’, ‘somewhat interested’, ‘very interested’ or ‘do not know’). Thirteen demographic variables, including sex and age, were elicited. *It should be noted that the barriers and benefits of a behavioural change that an individual actually faces might differ from those that Data analysis they perceive they face. For example, an individual may believe that The frequency of participants’ responses to the items was they will be negatively stereotyped if they alter their behaviour, but measured, and cross-tabulations (including Pearson’s chi- this may not necessarily occur upon making the behavioural change squared test of statistical significance) by sex and age (although, of course, a belief that one will be negatively stereotyped may be an effective barrier whether or not such stereotyping actually group were performed. Age groups were formed by occurs). Similarly, an individual may believe that one benefit of a splitting respondents’ ages into tertiles: 15–39, 40–55 and behavioural change is increased longevity (for example), but this may 56–91 years. It should be mentioned that, given the cross- not actually be the case. Indeed, there may be strong benefits of sectional nature of this study, age and cohort are making a behavioural change that have been identified by the inextricably linked. There was no need to perform a scientific community which are not realised by an individual, who instead may perceive other (perhaps less valid, according to the multivariate test of effects as the correlation between age
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