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dairy January 2013 nutrition news Welcome Food myths often lead to unnecessary dietary restrictions, nutritional deficiencies and ultimately may have an adverse effect on a person’s health. Misinformation about milk and other dairy products has been circulating for decades, but the truth is, dairy foods such as milk, yogurt and cheese are associated with a reduced risk of many chronic diseases. In this edition of DNN, we will separate fact from fiction by busting some common dairy myths, drawing on the latest evidence-based science. Does switching to reducedfat dairy lower your risk of coronary heart disease (CHD)? Do regular-fat dairy foods cause weight gain? Read on to find out! Best wishes, The Editor Glenys Zucco BSc., BA., ND., APD. 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There ilable, suc essentia ts to are many mineral reduced h low fat l for go fat cheese as skim milk , s dair low fat . od heal Getting yogurt and y th.” eno is difficult ugh calcium and if dairy other ess foods are ential nut In add not incl rients ition uded in faith. a low inta research sugges the diet in good visit and . ts that if ke of dair attention, our resources, 987 e in a calo care and y 227 any of due you nor onma ds, incl assistanc 60 105 rie control foo ABNhav hed with lially udininformation Austra dge the the e further g 3 Dairy greater ledrial is publis cil in y acknowle ions. serve ion. For All mate eatin w 1 Dairy Nutrition News January 2013 efull Coun nly. blicat plicat BUSTING SOME COMMON DAIRY MYTHS MYTH: ‘Cutting back on dairy foods helps with weight loss’ TRUTH: Including at least 3 daily serves of dairy foods within an energy-restricted diet can assist weight and body fat loss, particularly from the waist, and promote maintenance of muscle mass. With 63% of Australian adults currently overweight or obese,1 many people are searching for the most effective way to lose weight. A 2012 meta-analysis and systematic review of randomised controlled trials demonstrated that including at least 3 daily serves of dairy foods within an energyrestricted diet can lead to significantly greater weight and body fat loss, greater gain in body lean mass and greater reduction in waist circumference compared with a similar restriction of energy with a low dairy intake.2 This is the summary result from nine randomised controlled trials with an energy restriction of almost 500kcal (2090kJ)/day less than estimated energy requirement. A total of 430 men and women aged between 18 and 70 years took part in weight loss trials lasting between 8 and 48 weeks. The mean calcium in control diets was approximately 500mg/d (about 1 dairy serve) and the mean calcium in the intervention diets was approximately 1200mg/d, so the evidence relates to an extra 2-2.5 serves of dairy products/day, i.e. in total about 3-3.5 serves. The greater reduction in waist circumference and body fat loss seen in the high dairy diets is particularly important as a build up of abdominal adipose tissue is considered to be a key risk factor for chronic diseases related to the metabolic syndrome. Similarly, maintenance of muscle mass is important during weight loss to help prevent weight regain. Three mechanisms have been demonstrated to explain the beneficial effects of dairy foods within weight-loss diets: faecal fat loss, fat oxidation and appetite control. For faecal fat loss, a 2009 meta-analysis has shown dietary calcium decreases blood lipid concentrations and increases their intestinal excretion. The effect was greater with dairy foods than with calcium supplements.3 For fat oxidation, a 2012 meta-analysis indicates a low calcium intake promotes regulatory changes that can reduce fat mobilisation and oxidation,4 i.e. people tend to burn less fat when they have a low calcium intake. For appetite control, some studies suggest calcium/dairy foods may help reduce feelings of hunger and the desire to eat.5 MYTH: ‘Switching from regular-fat to lower-fat dairy foods will lower risk of CHD’ TRUTH: Research shows swapping regular-fat milk, yogurt and cheese to reduced-, low- or no-fat versions will NOT reduce risk of CHD. Consuming enough of these dairy products is more important than focusing on the fat content. There has been a long held view that encouraging Australians to consume reduced-fat, low-fat and no-fat core dairy foods rather than regular-fat varieties leads to improved health, particularly cardiovascular health. However, it is important to consider the entirety of the evidence, not just one or two individual studies. This is best done by looking at systematic reviews and metaanalyses. Dairy Myths Fact Sheet Do you have clients who unnecessarily cut out dairy? Our Dairy Myths fact sheet has the facts on common myths such as: • Milk and mucus • Milk and asthma • Dairy foods and weight • Dairy and acne To order free copies visit www.dairyaustralia.com.au/health 1 ABS 2012 Australian Health Survey: First Results 2 Abargouei AS et al., Int J Obes (2012) published on line 17 Jan 2012 doi:10.1038/ijo.2011.269 3 Christensen R et al., (2009) Obes Rev 10, 475-86. 4 Gonzalez JT et al., (2012) Obes Rev Jun 19. 5 Tremblay A & Gilbert JA (2011) J Am Coll Nutr 30, 449S-53. A 2011 systematic review and meta-analysis that considered all of the published prospective cohort studies reporting the relationship between consumption of dairy foods and CHD showed that there was no significant association between ‘high-fat dairy product intake’ and CHD risk (RR: 1.04; 95% CI 0.89, 1.21) or ‘low-fat dairy product intake’ and CHD risk (RR 0.93; 95% CI: 0.74, 1.17)6 (see Figures 1 and 2). Similarly, a 2012 systematic review concluded that the observational evidence does not support the hypothesis that dairy fat or high-fat dairy foods contribute to cardiometabolic risk.7 According to the evidence statements in the Australian Dietary Guidelines, higher levels of core dairy foods consumption (regular-fat and reduced-fat) are associated with reduced risk of heart disease, stroke, hypertension, colorectal cancer, type 2 diabetes, metabolic syndrome and improved bone mineral density. Therefore, the important message is to advise people to consume at least their minimum recommended intake of core dairy foods (milk, yogurt, cheese and custard) for their age and gender. No significant association between total ‘high fat’ dairy consumption and CHD risk Figure 1: Forest plot for the relationship between total high-fat dairy (per 200g/day) and CHD, dose-response meta-analysis 6% Weight Relative risk of 4 prospective cohort studies (n=274,680; n cases=3,418). year country (95% CI) author (ref) (21) year Al−Delaimy 2003 country USA Relative risk % Weight (95% CI) 1.24) 0.95 (0.73, 33.88 Bostick (9) (21) Al−Delaimy 1999 2003 USA USA 1.02 (0.73, (0.63, 1.24) 1.66) 0.95 10.34 33.88 Engberink Bostick (9) (44) 2009 1999 Netherlands USA 1.08 (0.63, (0.69, 1.66) 1.69) 1.02 12.26 10.34 Hu (22) (44) Engberink 1999 2009 USA Netherlands 1.10 (0.69, (0.87, 1.69) 1.40) 1.08 43.51 12.26 Overall Hu (22) 1999 USA 1.04 (0.87, (0.89, 1.40) 1.21) 1.10 100.00 43.51 1.04 (0.89, 1.21) 100.00 author (ref) (I–squared = 0.0%, p = 0.868) Overall NOTE: Weights are from random effects analysis (I–squared = 0.0%, p = 0.868) NOTE: Weights0.1 are from random effects analysis 0.1 1 2 4 2 4 relative risk 0.5 1 relative risk No significant association between total ‘low-fat’ dairy consumption and CHD risk Figure 2: Forest plot for the relationship between total low-fat dairy (per 200 g/day) and CHD, dose-response meta-analyses of 3 prospective cohort studies (n=240,194; n cases=3,018).6 MYTH: ‘Most Australians consume plenty of dairy foods’ TRUTH: In Australia, six out of ten males and seven out of ten females (12+ yrs) do NOT meet their minimum recommended core dairy food intake. The estimated annual healthcare cost attributable to low intake of core dairy foods is $2 billion. 0.5 author (ref) year country Relative risk (95% CI) Hu (22)(ref) author 1999 year USA country Relative risk % Weight 0.70 (0.51, 27.14 (95% CI) 0.97) Engberink (44) Hu (22) 2009 1999 Netherlands USA 1.02 (0.51, (0.81, 0.97) 1.27) 0.70 37.83 27.14 Al−Delaimy(44) (21) 2009 2003 Engberink USA Netherlands 1.06 (0.81, (0.83, 1.27) 1.35) 1.02 35.03 37.83 Overall Al−Delaimy (21) USA 0.93 (0.83, (0.74, 1.35) 1.17) 1.06 100.00 35.03 0.93 (0.74, 1.17) 100.00 2003 (I–squared = 55.7%, p = 0.105) Much attention is given to Australians’ low consumption of fruit and vegetables and to their overconsumption of junk food. However, a new paper in the Australian and New Zealand Journal of Public Health revealed a high proportion of adults and children with less than the minimum recommended core dairy food intake. Overall NOTE: Weights are from random effects analysis % Weight (I–squared = 55.7%, p = 0.105) NOTE: Weights0.1 are from random effects analysis 0.5 1 2 4 2 4 relative risk 0.1 0.5 1 relative risk The researchers from the University of South Australia’s Health Economics and Social Policy Group then assessed the scientific literature on the health effects of core dairy food consumption (both positive and negative) and used the best available evidence to estimate the direct healthcare expenditure and burden of disease attributable to low dairy consumption within Australia. They concluded that if Australians’ dairy consumption were to be at the minimum recommended levels, the annual healthcare cost savings would total $2 billion – an amount comparable to the entire budget for public health interventions.9 Doidge & Segal (2012) found that 58% of males and 73% of females aged 12+ years consumed less than the minimum recommended core dairy food intake for their Males age as outlined in the 1998 Australian Guide to Healthy 100% 8 Eating (2 daily serves for adults and 3 for teens). The situation was even worse for adolescents, with 62% 75% of boys and 83% of girls not meeting their minimum dairy intake 50% recommendation (Figure 3). 25% 0% Figure 3: Proportion of Australians meeting the minimum dairy recommendations (2 serves for adults, 3 for teens).8 Males 100% 75% 75% 50% 50% 25% 25% 25– 29 3545– 55– 39 49 59 Age (years) 65– 69 75– 79 not meeting recommendations meeting recommendations 0% 12– 15 19 25– 29 3545– 55– 39 49 59 Age (years) Females 100% 75% Nutrition News January 2013 Dairy 50% 19 Females 100% 0% 2 12– 15 65– 69 75– 79 12– 15 19 25– 29 3545– 55– 39 49 59 Age (years) 65– 69 75– 79 MYTH: ‘People with lactose intolerance should completely avoid dairy’ TRUTH: People with lactose intolerance can consume dairy foods by following some simple guidelines. Needless avoidance of dairy foods can have a negative impact on a person’s health. According to a consensus statement issued by the US National Institutes of Health (NIH), people often mistakenly ascribe symptoms of a variety of intestinal disorders to lactose intolerance without undergoing testing.10 As a result, many individuals who think they are lactose intolerant are not lactose malabsorbers (i.e. they do not have a deficiency in their levels of lactase, the enzyme that digests lactose). The consensus paper concluded in most cases, individuals with lactose intolerance (the syndrome of diarrhea, abdominal pain, flatulence and/or bloating after lactose ingestion) do not need to eliminate dairy foods completely and suggested they can consume small quantities of milk, yogurt and hard cheese. It points out that people who have been diagnosed with lactose malabsorption (usually by a breath hydrogen test) can ingest 12 grams of lactose (the equivalent of 1 cup of milk) without symptoms, particularly if it is ingested with other food. Many dairy foods do not contain large amounts of lactose (see Table 1). For example, most cheeses such as Parmesan, Cheddar and Swiss contain virtually no lactose and are usually well tolerated. According to the consensus paper, yogurt is generally much better tolerated than milk by individuals with lactose malabsorption. Table 1: Lactose content of Australian dairy foods11 Food Lactose content (g) 200ml whole milk 12.6 200ml reduced-fat milk 11.2-12.2 200ml skimmed milk 10.0-11.2 200g yogurt 6.0-10.6 40g cheese 0-0.04g Unfortunately, many individuals with real or perceived lactose intolerance needlessly avoid dairy foods and ingest inadequate amounts of calcium, which, according to the consensus statement, may predispose them to decreased bone accrual, osteoporosis and other negative health outcomes. 6 Soedamah-Muthu SS et al (2011) Am J Clin Nutr 93, 158-71. 7 Kratz M, et al (2012) Eur J Nutr DOI 10.1007/s00394-012-0418-1 Published on line 19 July 2012. 8 Doidge JC & Segal L (2012) Austr NZ J Public Health 36: 236-40. 9 Doidge JC et al (2012) J Nutr 142: 1-9 (Published on line 24 July 2012). 10 NIH Consensus and State-of-the-Science Statements 27, 2 http://consensus.nih.gov/2010/lactose.htm 11 NutTab 2010. 12 Abargouei AS et al., Intl J Ob (2012) published on line 17 Jan 2012 doi:10.1038/ijo.2011.269. 13 Louie JCY et al., (2011) Obes Rev 7 e5882-92. 14 Kratz M, et al., (2012) Euro J Nutr DOI 10.1007/s00394-012-0418-1 Published on line 19 July 2012. 15 Fogelholm M et al., (2012) Fd Nutr Res 56: 19103 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3418611/ 3 Dairy Nutrition News January 2013 MYTH: ‘Milk, yogurt and cheese (particularly regular-fat varieties) are fattening’ TRUTH: Research indicates that consumption of core dairy foods, including regular-fat versions, is not associated with weight gain or body fat gain. Despite the acknowledged health benefits of core dairy foods, there is sometimes a reluctance to recommend an increase in consumption of dairy foods due to concerns over their effect on body weight. However, a 2012 systematic review and meta-analysis published in the International Journal of Obesity has shown this concern is unwarranted. When adults not on a weight-loss diet were simply asked to increase their dairy consumption there was no significant change in their body weight, body fat mass, waist circumference or lean body mass.12 This result is based on data from five randomised-controlled trials involving a total of 453 men and women between the ages of 18 and 85 years. The subjects in the intervention groups increased their intake of core dairy foods (up to approximately 3-3.5 serves/day) for 21 to 48 weeks and those in the control groups maintained their habitual diet (which included approximately 1 serve/day of core dairy foods). As regular-fat dairy foods are higher in kilojoules than their reduced-fat counterparts, it is often assumed that the fat content of dairy foods influences their impact on weight gain and risk of overweight and obesity. However, three recent systematic reviews have concluded that this is not the case. A 2011 systematic review by Australian researchers found low-fat dairy products were not more beneficial for weight status than regular-fat dairy products and in fact, the reverse may be true.13 Similarly, a 2012 systematic review concluded ‘The observational evidence does not support the hypothesis that dairy fat or high-fat dairy foods contribute to obesity or cardio-metabolic risk, and suggests that high-fat dairy consumption within typical dietary patterns is inversely associated with obesity risk’.14 Also, a 2012 systematic review undertaken for the review of the Nordic Dietary Guidelines concluded there is suggestive evidence that ‘high-fat dairy products’ have a ‘protective role against increasing weight.15 In addition to this observational evidence, a randomisedcontrolled trial in Australian children conducted by the CSIRO found energy intake and adiposity were unchanged when 76 children changed from regular-fat to reduced-fat dairy foods for six months.16 MYTH: ‘Osteoporosis is rare in countries such as China where people have a low dairy intake’ TRUTH: According to the International Osteoporosis Foundation, vertebral fractures are as common in Asian populations. Numerous studies have demonstrated an adequate calcium/dairy food intake is critical for good bone health in both Asian and Western populations. This myth often comes up in discussions about the benefits of dairy foods for bone health. However, it is important to appreciate that firstly, osteoporosis is a very significant health problem in Asian countries with low dairy intakes and secondly, numerous studies have demonstrated an adequate calcium/dairy food intake is critical for good bone health in both Asian and Western populations. A landmark 2009 report by the International Osteoporosis Foundation (IOF)17 highlighted that 50% of all osteoporotic hip fractures will occur in Asia by the year 2050 and that osteoporosis is greatly under diagnosed and undertreated in Asia. According to the report, vertebral fractures are as common in Asian populations as in Caucasian populations. In addition, there has been a 2- to 3-fold increase in the incidence of hip fracture in most Asian countries during the past 30 years. Randomised controlled trials have shown increased milk intake improves total body bone mineral content18 and total hip bone mineral content19 in Chinese children and helps to reduce bone mineral density loss in post-menopausal Chinese women.20 Average dietary calcium intake for the adult Asian population is approximately 450mg/day and the IOF recommends the very low calcium intake is addressed through nutritional guidelines and information campaigns in an effort to raise calcium intake among all age groups, especially the young. MYTH: ‘Dairy is a trigger for asthma’ TRUTH: Dairy foods are not a common trigger for asthmatic symptoms. A 2012 review has summarised the available evidence examining the link between milk consumption and asthma. It concluded ‘current evidence does not directly link milk consumption and asthma’.21 This is consistent with the conclusion of a 2005 review that concluded ‘recommendations to abstain from dairy products due to the belief that they induce symptoms of asthma are not supported by the body of research evidence on the relationship between dairy consumption and occurrence of asthma’.22 Despite this lack of evidence, a recent survey found 54% of Australian general practitioners reported that their patients eliminated or restricted their intake of dairy foods due to asthma.23 Both reviews highlight the potential dietary imbalances that can occur if dairy foods are needlessly eliminated from the diet. It is thought the belief that milk exacerbates asthma goes back to the 12th century and was strengthened by its inclusion in Dr Spock’s Baby and Child Care book, (one of the bestselling books of its type worldwide over the past half century). Known triggers of asthmatic symptoms include allergens such as house dust mites, pollens, mould spores, animal fur, tobacco smoke, viral infections and weather changes. Exercise may also trigger asthma, but appropriate medication and warm-up exercises can usually control this. Food is not a common trigger for asthma apart from those with food allergies or chemical intolerances. The National Asthma Council recommends people with asthma should eat a nutritious diet from a wide variety of foods, including milk and other dairy products. 16 Hendrie GA & Golley RK (2011) Am J Clin Nutr 93, 1117-27. 17 Mithal, A et al. (2009) International Osteoporosis Foundation, Switzerland 18 Du X et al., (2002) Brit J Nutr 92, 159-68. 19 Lau EMC et al., (2004) Osteoporos Int 15, 654-8. 20 Lau EMC et al., (2001) J Bone Miner Res 16, 1704-9. 21 Thiara, G & Goldman, RD. (2012) Can Fam Phys 58; 165-166. 22 Wuthrich B et al., (2005) J Am Coll Nutr 24, 547S-555S. 23 Dairy Australia, GP survey 2011. 4 Dairy Nutrition News January 2013 MYTH: ‘All food sources of calcium are equally beneficial’ TRUTH: When assessing dietary sources of calcium, it is important to consider both the calcium bioavailability and the calcium content per serve. The 2003 Dietary Guidelines for Australians24 recognise that few foods provide as much absorbable calcium per serve as dairy food. Although dairy ‘alternatives’ are often fortified with calcium, some studies suggest the bioavailability of the added calcium is not equivalent to the calcium naturally present in milk. For example, Heaney reported that, compared with milk, 25% less calcium was absorbed from a soy drink fortified with tri-calcium phosphate to the equivalent level found in milk.25 Lower calcium bioavailability with tri-calcium phosphate was also reported by Zhao et al., but a calcium carbonate fortified soy drink had a similar calcium bioavailability to milk.26 Although calcium is naturally present in foods such as green leafy vegetables and legumes, the amount of calcium present in one serve is lower than that in dairy foods. The bioavailability of calcium in these foods can also be affected by other nutrients that inhibit calcium absorption including phosphates, phytic acid from the husks of cereals and oxalic acid.27 Recent dietary modelling utilising the NHANES 2003-2006 database examined the impact of substituting dairy foods with alternative calcium sources.28 Based on the US MyPyramid food pattern, the modelling showed the replacement of a serve of dairy foods required 1.1 serves of fortified a soy drink, or 1.2 serves (204 g) of bony fish (e.g. canned sardines or pink salmon with bones), or 2.2 serves (1.1 cups) of leafy greens (including kale, spinach, collards, and turnip greens) to meet equivalent calcium intakes. MYTH: ‘Dairy protein leaches calcium from the bones’ TRUTH: A high protein diet is not detrimental to bone health. If anything, a higher protein diet may be slightly beneficial, particularly if baseline protein is low. Dairy foods play an important role in bone health. This myth seems to have arisen because increased protein intake can lead to increased calcium loss in the urine. A comprehensive 2012 review concluded that although high protein diets induce an increase in urinary calcium excretion, they do not seem to be linked to impaired calcium balance.29 The authors pointed out that no clinical data support the hypothesis of a detrimental effect of a high protein diet on bone health, except when there is an inadequate calcium supply (obviously, this is never the case with dairy foods). They suggest increased absorption of calcium from the intestine explains why urinary calcium tends to increase on a high protein diet. In 2011, Kerstetter and colleagues reviewed the evidence supporting the hypothesis that high dietary protein may support calcium metabolism and bone health.30 They concluded ‘recent epidemiological, isotopic and metaanalysis studies suggest that dietary protein works 5 Dairy Nutrition News January 2013 synergistically with calcium to improve calcium retention and bone metabolism.’ They warned ‘the recommendation to intentionally restrict dietary protein to improve bone health is unwarranted, and potentially even dangerous to those individuals who consume inadequate protein.’ MYTH: ‘Cheese is acid-producing and therefore detrimental for bone health’ TRUTH: This hypothesis is not evidence-based. The body is able to buffer acid produced from foods such as cheese. The nutrients in cheese make it beneficial for bone health. The ‘Acid-ash’ hypothesis states that ‘acid’ from modern diets causes osteoporosis and that an alkaline diet or ‘alkaline’ supplements or salts prevent osteoporosis. According to the hypothesis, food such as hard cheese and meat are very acidic, bread and milk are slightly acidic, and vegetables and fruit are alkaline.31 The idea is that structural bone mineral is dissolved to release bicarbonate so that acids can be neutralised and systematic acidosis is avoided. In 2011, a group of researchers from the University of Calgary in Canada published a systematic review of the evidence for the acid-ash hypothesis.32 The authors identified 55 studies that met their inclusion criteria, including 22 randomised interventions. They noted that none of the intervention studies provided direct evidence of osteoporosis progression and the 11 supporting prospective cohort studies were not controlled regarding important osteoporosis risk factors. After examining the available evidence the authors did not find any studies that revealed a biological mechanism that functioned at physiological pH levels. They also noted that the randomised studies did not provide evidence for an adverse role of phosphate, milk foods and grain foods and osteoporosis. The systematic review concluded ‘a causal association between dietary acid load and osteoporotic bone disease is not supported by evidence and there is no evidence that an alkaline diet is protective of bone health.’ 24 National Health and Medical Research Council, Food for Health. Dietary Guidelines for Australians: A Guide to Healthy Eating. 2003, Department of Health and Aging, Australian Government: Canberra: Australia. 25 Heaney, RP (2000) J Nutr 131(4 Suppl):1344S-8S. 26 Zhao, Y et al. (2005) J Nutr 135:2379-82. 27 Wahlqvist M ed (1997) Food and Nutrition: Australasia, Asia and the Pacific. 28 Fulgoni, VL et al. (2011) Nutr Res 31, 759-765. 29 Calvez J et al., (2012) Eur J Clin Nutr 66, 281-95. 30 Kerstetter JE et al., (2011) Curr Opin Lipidol 22, 16-20. 31 Wynn E et al., (2010) Proc Nut Soc 69, 166-73. 32 Fenton TR et al., (2011) Nutr J 10:41. Serves 4 Ingredients 450g can whole baby beetroot, drained 400g can lentils, drained and rinsed 2 spring onions, finely sliced 50g wild rocket leaves 2 teaspoons extra virgin olive oil 1 teaspoon red wine vinegar ¼ cup crumbled feta cheese freshly ground black pepper, to taste Beetroot Lentil and Feta Salad Method Nutrition information 1.Cut any larger beetroot in half and combine with lentils and spring onions in a bowl. Add the rocket and drizzle with combined oil and vinegar. Gently toss to coat. NutrientPer Tips/Handy Hints Serve To boost protein in this salad, add some grilled Energy (kJ) 622 chicken or lamb. Protein (g) 7.5 2.Transfer salad to a serving platter, scatter with feta and a grinding of pepper. Saturated Fat (g) 2.9 Carbohydrate (g) 12.5 Sugars (g) 5.8 Total Fat (g) Dietary fibre (g) 2.2 Sodium (mg) 407 Calcium (mg) 74 Iron (mg) 0.3 Published by Dairy Australia. The information in this document is to be used as nutrition education information only. All material is published with due care and attention, and in good faith but no responsibility can be accepted for omissions, typographical or printing errors, or situation changes that have taken place after publication. © Dairy Australia 2013. All rights reserved. AB/NE/2013/12,000 6 Dairy Nutrition News January 2013 6.5 Dairy Australia Limited ABN 60 105 227 987 Level 5, IBM Centre 60 City Road Southbank Victoria 3006 Australia T: +61 3 9694 3842 F: + 61 3 9694 3888 E: [email protected] www.dairyaustralia.com.au/health