- Citado por SciELO
versión impresa ISSN 0716-9760
Biol. Res. v.37 n.2 Santiago 2004
Biol Res 37: 201-207, 2004
Moderation in Australia-Policy and Achievements
The Australian Wine Research Institute, Australia.
The statistics available on alcohol consumption are generally divided into low, medium and high risk of alcohol-related harm which corresponds to light, moderate and excessive alcohol consumption (National Health and Medical Research Council, 1987; Pols and Hawks, 1992; National Health and Medical Research Council, 2001). By 1999, in Australia 80 % of all drinking occasions were of low to medium risk of harm (ABS, 1998; Stanford, 1999), although 51 % of total consumption occurred on days when the consumer exceeded low risk limits for acute harm (Stockwell et al., 2002). However, despite the general decline in alcohol consumption since 1982, alcohol consumption per se has increased among young Australians and often at a high-risk level. Accordingly, alcohol misuse is claimed to be second only to tobacco as a preventable cause of death and hospitalization in Australia (Collins and Lapsley, 1996; Chikritzhs, 1999). Principal among alcohol-related causes of death and hospitalization are cirrhosis of the liver, alcohol dependence, hemorrhagic stroke, suicide and motor vehicle accidents, such that the misuse of alcohol purportedly accounts for approximately 4.9 % of the total disease burden in Australia (Mathers et al., 1999). This magnitude alone is indicative of the need for immediate governmental intervention, but although some alcohol consumption incurs costs, some alcohol consumption can also confer benefits. The beneficial health effects of alcohol consumption thus provide significant challenges for policy and reinforces the importance of promoting low risk consumption patterns.
This paper chronicles changes in Australian Federal government policy on alcohol since the initial draft National Health Policy on Alcohol in Australia was presented to the Ministerial Council on Drug Strategy in 1987. This policy was prepared in response to the Senate Standing Committee on Social Welfare stating, in 1977, that "alcohol problems in Australia had reached epidemic proportions, the neglect of which would represent gross national irresponsibility".
Theoretically then, a greater reduction in alcohol-related harm within a community would be observed if all alcohol consumers were targeted to consume less, irrespective of their current level of consumption, than if only heavy consumers were targeted (Ledermann, 1965; Kreitman, 1986). Some of the strategies ensuing from this theory were primarily to prevent harm by reducing the availability of alcohol within a community, as it was considered that the risk of all harm was also directly related to mean level of consumption. While there is evidence of such a linear relationship for alcohol-related accidents, the relationship is exponential for cirrhosis of the liver, for example (McLean et al., 1980, Edwards et al., 1994). Furthermore, this theory implied that even moderate alcohol consumption was harmful.
Thus, one of the most serious and significant flaws in this theory, and hence in the National Health Policy on Alcohol in Australia of 1989, and the subsequent National Drug Strategic Plan 1993-1997, is the omission in the equation of any health benefit from light-to-moderate alcohol consumption, such as a reduction in the level and risk of cardiovascular disease and in overall mortality, which is evidenced in most, but not all, epidemiological studies, and is generally observed irrespective of gender, ethnicity and geography (Klatsky, 1990; Renaud and de Lorgeril, 1992; Klatsky and Armstrong, 1993; Maclure, 1993; Rimm et al., 1996; de Burgh, 1998; Hart et al., 1999; Renaud et al., 2004). Indeed, from the J-shaped curve ascribed to the relationship between level of consumption and risk of overall mortality, a light-to-moderate level of consumption with no occasions of heavy consumption, confers significantly more benefit than harm to health (Moore et al., 1986; Boffetta and Garfinkle, 1990; Klatsky et al., 1990; Marmot and Brunner, 1991). Indeed, a reduction in mean consumption levels may result in a greater proportion on the community missing out on the potential cardioprotective effects of low-to-moderate alcohol consumption (Holman, 1995; Holman and English, 1995). Cardiovascular disease is the leading cause of death in Australia at approximately 25 % and regular low to moderate alcohol consumption can reduce its risk by up to 40 % (Rimm et al., 1996; 2001).
Subsequent reanalysis of the data supporting the preventative paradox theory have shown that when patterns of alcohol consumption, especially episodes of heavy consumption and intoxication are analyzed rather than just mean consumption levels, the preventative paradox disappears (Stockwell et al., 1996). Instead it has been shown that specific occasions of heavy consumption, usually by people who generally consume a light-to-moderate amount in low risk ways, result in most alcohol-related harms or problems. For example, in 1997, acute conditions, such as alcohol-related fatal road injuries, allied to occasional high-risk consumption accounted for 28 % of all alcohol-related deaths while chronic conditions, such as cirrhosis of the liver, allied to sustained high-risk consumption accounted for 42 % of all alcohol-related deaths (Chikritzhs et al., 2001). Thus the pattern of alcohol consumption is as, if not more, predictive of harm than per capita consumption. Hence, a greater reduction of risk in the general community may be achieved through the prevention of heavy high-risk consumption occasions rather than by population control strategies to reduce mean consumption levels.
_ That the consumption of alcohol by women should not exceed 2 units or 20 g of absolute alcohol per day on a regular basis, or 14 units per week.
Australia's recommendations, however, have generally contrasted with those of other countries, in that both daily and weekly amounts were stated, which reflected consideration of both amount and pattern of consumption associated with risk of harm (Department of Health, 1995). Other countries' recommendations generally are expressed as amounts consumed per week indicating a preoccupation with the problems of regular consumption and dependence rather than those episodes of heavy consumption or intoxication.
The recommendations also defined 'safe', 'hazardous' and 'harmful' drinking levels, which are allied to levels of risk of alcohol-related harm. For example, two to four units per day or 14-28 units per week was considered 'hazardous' for women and more than four units per day or 28 per week was considered 'harmful' for women, while four to six units per day or 28-42 units per week was considered 'hazardous' for men and more than six units per day or 42 units per week was considered 'harmful' for men.
These defined levels were, however, based on a variety of scientific and social opinions rather than on a detailed review of the epidemiological research. Then in 1996, a meta-analysis was undertaken of 16 cohort studies which examined the relationship between the level of consumption and all-cause mortality, and a further 132 epidemiological studies were examined for 10 specific alcohol-associated causes of death, such as cardiovascular disease. The meta-analysis determined that the relative risks of mortality as defined in the recommendations were consistent with available epidemiological evidence (Holman et al., 1996). The meta-analysis also determined that a pattern of usual alcohol consumption consistent with the recommendations for `safe' drinking levels would confer a mortality risk similar to or less than that observed in abstainers for people aged 35 years or older.
In addition, a recommendation was that all people should have two alcohol free days per week, and that pregnant women and people driving or operating machinery should abstain from alcohol.
The main focus of the current National Alcohol Strategy-a plan for action 2001 to 2003-2004 is still harm minimization, but the focus of the strategies has shifted from alcohol consumption to consequences of use, conveying to consumers the concerns with the consequences of consumption. The strategies and objectives are also more focused to reduce the risk of and/or contain harm ensuing from consumption rather than to reduce the overall level of consumption of an individual or a community (Heather et al., 1993). This Strategy also recognizes that most at-risk consumption is ad hoc and irregular rather than associated with habitual heavy consumption (Stockwell et al., 1996) and hence that there is no definitive group of at-risk consumers that can be targeted (Cahalan and Room, 1974; Clark and Cahalan, 1976; Cherpitel, 1991; Tracy et al., 1992; Skog, 1993), apart from young-adults. Indeed in 1995, while approximately two thirds of Australian consumers drank alcohol at a hazardous level on one occasion, generally their consumption could be classified as `safe' (McAllister, 1993; Single and Rohl, 1997), but the converse was observed for young adults. An objective is, therefore, to protect those individuals at higher risk of alcohol-related harm as well as specifically preventing it in young adults, by focusing on at risk consumption patterns. Initial results from a classroom-based alcohol education program in Western Australia, which enables young adults to better identify and deal with high-risk consumption situations, suggests that such tailored programs can reduce harm in this high-risk group (McBride et al., 2000).
Altogether there are 11 key strategic areas, which include community education and information, specific workplace education, improved training for health professionals to aid early intervention and access to treatment, improved effectiveness of legislative and regulatory initiatives and drink driving initiatives, promotion of safer drinking environments and the responsible marketing and provision of alcohol, as well as the usual population control strategies of price and taxation. This Strategy also recognizes that non-traditional partnerships can be formed with all stakeholders including the alcohol beverage industry, to improve the capacity of individuals, families and the community to respond to alcohol-related harm.
In addition, for the first time in an Australian alcohol policy, a primary aim of the Australian National Drug Strategy-a plan for action 2001 to 2003-2004 is also to achieve a balance between reducing the burden of alcohol-related harm and maximizing the social and health benefits of low risk alcohol consumption.
In 1999, the NH&MRC began a review of their 1987 and 1992 recommendations, as more material was becoming available concerning the importance of drinking patterns and individual risk factors to the safe consumption of alcohol by men and women. Individual risk factors for alcohol-related harm include age, genetic variation in alcohol metabolism and susceptibility to certain diseases and disorders, and health status, as well as the amount of alcohol consumed on any one occasion. The differentiation between the level of alcohol that can be safely consumed by men and women, however, remains.
The Guidelines build on the 1987 and 1992 recommendations regarding responsible drinking behavior, and attempt to address when, where and under what circumstances hazardous consumption and associated high risk is likely to occur. As there are various alcohol consumption patterns, the reduction of this variety and complexity to a single measure of mean daily intake is likely to hide patterns of consumption that are particularly harmful, such as binge drinking.
Most importantly, however, these Guidelines are based on a detailed review of epidemiological and scientific research on alcohol and health. Briefly, the 12 recommendations of these Guidelines can be divided into general and specific.
The general recommendations for Australians define a level of alcohol consumption at which there is only minimal risk of harm, and where there may be some health benefits for a proportion of the general population. As evident in the Strategy, these guidelines recognize that alcohol consumption, at a low to moderate level, can have significant health benefits for some people, particularly in a reduction of the risk of cardiovascular disease from `middle age' onwards. For example, these guidelines recommend that every person who drinks alcohol should control their pattern of drinking to minimize both longer-term and short-term risks, and to gain longer-term benefits.
- Not more than an average of 4 standard drinks per day, and not more than 6 standard drinks on any one occasion and not more than 2 drinks in the first hour and 1 per hour thereafter, to minimize short-term risk within the weekly limit.
- Not more than an average of 2 standard drinks per day, and not more 4 standard drinks on any one occasion and not more than 1 standard drink per hour, to minimize short-term risk within the weekly limit.
The views expressed herein represent those of the author and not necessarily the Australian wine industry.
The position of Health and Regulatory Information Manager is supported by Australia's grapegrowers and winemakers through their investment body, the Grape and Wine Research and Development Corporation, with matching funds from the Federal government.
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Corresponding author: Creina Stockley. The Australian Wine Research Institute, PO Box 197, Australia. Phone: 61-8-8303 6600. E-mail: Creina.Stockley@awri.com.au