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The food and beverages we eat and drink (our diet) play an important role in our overall health and wellbeing. Food provides energy, nutrients and other components that, if provided in insufficient or excess amounts can result in ill health. The conditions often affected by our diet include coronary heart disease, stroke, high blood pressure, atherosclerosis, some forms of cancer, type 2 diabetes, dental caries, gall bladder disease and nutritional anaemias.
Ill health generally cannot be attributed to any one food component alone. Diseases associated with diet are also associated with environmental, behavioural, biological, societal and genetic factors. The complex interplay between food and other risk factors and disease make it difficult to assess the contribution of diet to ill health.
In an optimal diet, the supply of required energy and nutrients is adequate for tissue maintenance, repair and growth. The proteins, carbohydrates, fats, vitamins and minerals required to maintain the human body in good health are met by eating a wide variety of nutritious foods.
More information on diet, nutrition and health can be found at the Eat for Health website.
The Australian Dietary Guidelines , developed by the National Health and Medical Research Council in 2013, recommend consumption of a wide variety of nutritious food. Essential nutrients for good health are found in varying amounts throughout many different food groups. Variety in a diet maximises the possibility of obtaining enough of these essential nutrients.
The Australian Dietary Guidelines recommend adults, adolescents and children:
And drink plenty of water
Each Guideline is considered to be equally important in terms of public health outcomes.
The Australian Dietary Guidelines recommend that adults eat 2 serves of fruit and 5–6 serves of vegetables per day. For children and adolescents, depending on age and sex, the recommendations are for 1–2 serves of fruit and 2 ½ and 5 ½ serves of vegetables. There are different guidelines for pregnant and breastfeeding women .
A standard serve of fruit is about 150 grams, and a serve of vegetables is about 75 grams. Examples of serves include:
For more information on the amounts and kinds of food that you need each day to get enough nutrients essential for good health visit the Eat for Health website.
Based on self-reported data from the Australian Bureau of Statistics (ABS) 2011–12 Australian Health Survey (AHS), over 1 in 2 people aged 18 and over (52%) do not eat the recommended 2 serves of fruit while over 9 in 10 (92%) do not eat the recommended 5 serves of vegetables.
The proportion of adults with inadequate vegetable intake is similar across age groups (Figure 1). The proportion of adults with inadequate fruit intake is 59% for 18–24 year olds, falling to 40% of persons aged 85 and over.
Source: ABS 2013. Australian Health Survey: Updated Results, 2011–12. ABS cat. no. 4364.0.55.003. Canberra: Australian Bureau of Statistics (see source data).
The Nutrient Reference Values (NRVs) are a set of recommendations for Australians' nutritional intake that have been developed by the NHMRC. The Estimated Average Requirement (EAR) sets a nutrient level that is used to estimate the prevalence of inadequate intakes across the population, while intakes above the Upper Level (UL) increases the risk of adverse health effects .
The 2011–12 AHS indicates that:
Sodium (often referred to as salt) is an important nutrient in the diet; however, too much sodium can increase blood pressure, which increases the risk of developing heart and kidney problems . While sodium is found naturally in foods such as milk, cream, eggs and meat, the main source in the diet is from processed foods where sodium acts as a flavour enhancer and preservative.
The 2011–12 AHS shows that a large proportion of the population exceeds the UL for sodium, particularly younger age groups. Of children aged 2-8, almost all males exceed the UL, as do approximately 95% of females this age (Figure 2).
In general, more males exceed the UL than females and this difference is more pronounced for every age group over 9 years.
Source: ABS 2015. Australian Health Survey: Usual Nutrient Intakes, 2011–12, ABS cat. no. 4364.0.55.008, Canberra: Australian Bureau of Statistics (see source data).
In the Australian population aged 2 and over, the average saturated fat (including trans fatty acids) is 12% of energy intake, which is above the recommended level of no more than 10%. Compared to 1995 estimates, saturated fat content of the diet has decreased by 1 percentage point (a statistically significant reduction) .