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Discretionary choices (a.k.a. junk food)

Discretionary choices, discretionary foods, non-core foods, energy-dense, nutrient-poor foods are some of the names given to junk food. These are foods that should not represent a large part of a person’s food intake.

Nutrient profile

These foods typically contain a high amount of saturated fat, added salt, added sugar and/or alcohol (1). As a general rule, processed foods tend to fall into this category. Some of these foods may contain essential nutrients and even health claims in the packaging, but are not necessarily healthy as a whole.

The foods

In general, most people recognise what a “not so healthy food” is, however it is always useful to have a yes/no list to refer to. Several organisations and individuals worked hard to categorise food groups and items for the Australian Health Survey 2011-13. Below is a summary from the official list (2).

Non-alcoholic beverages

Cereals and cereal products

Fats and oils

Fish and seafood products and dishes

Egg products and dishes

Meat, poultry and game products and dishes

Milk products and dishes

Other dishes where milk or a milk product is the major component

Dairy & meat substitutes

Soup

Savoury sauces and condiments

Vegetable products and dishes

Controversial items

There are some items that are considered “core foods” (i.e. not junk) that I would still call discretionary choices:

The dairy products in this list are included just because they contain calcium.

Conversely, I disagree with “pickles, chutneys and relishes” and “dips” being in the discretionary category. I mean… Gherkins? Hummus? Really?

The guidelines

The Australian Dietary Guidelines recommend to limit discretionary choices. Only people with increased energy needs (such as highly active individuals) may use discretionary foods to meet energy requirements (1).

Even though the list of discretionary choices is fixed, the guidelines are quite ambiguous regarding quantity and frequency of intake. The actual wording is “sometimes and in small amounts”, which unfortunately many people misinterpret as “a few times per day”.

The rationale

Intake of discretionary foods is associated with increased risk of obesity, cardiovascular disease, type 2 diabetes and some types of cancer. High saturated fat intake is associated with unfavourable blood lipids and excess energy consumption. Excess sodium (which typically comes from processed foods) tends to elevate blood pressure. Added sugars may lead to dental caries and weight gain (1).

How much are we eating?

Based on the aforementioned classification of what constitutes core vs discretionary foods and the stats from the 2011-2013 nutrition survey (2), Australians get 35.4% of their energy intake from discretionary choices. This proportion varies according to age group, with children and teenagers 9-18 years old consuming the most of these foods. Not surprisingly, men tend to have a slightly higher proportion of discretionary food intake than women. See graphs below for more details.

The food group with the highest percentage of energy coming from discretionary choices is, by far, cereal-based products and dishes, i.e. cakes, pastries, breads, etc.

References

  1. National Health and Medical Research Council. Australian Dietary Guidelines. Canberra: National Health and Medical Research Council; 2013.
  2. Australian Bureau of Statistics 2014, Australian Health Survey: Users’ Guide, 2011-13, ‘Australian Health Survey – Discretionary Food List’, data cube: Excel spreadsheet, cat. no. 43630DO005_20112013, viewed 20 November 2018, http://www.abs.gov.au/AUSSTATS/subscriber.nsf/log?openagent&Discretionary%20food%20list.xls&4363.0.55.001&Data%20Cubes&C38E7117796E8066CA257CD200147FE1&0&2011-13&13.05.2014&Latest
  3. Australian Bureau of Statistics 2014, Australian Health Survey: Nutrition First Results – Foods and Nutrients, 2011–12, ‘Table 9: Proportion of Energy from discretionary foods’, data cube: Excel spreadsheet, cat. no. 43640DO009_20112012, viewed 20 November 2018, http://www.abs.gov.au/ausstats/subscriber.nsf/log?openagent&Table%209%20Proportion%20of%20energy%20from%20discretionary%20foods%20.xls&4364.0.55.007&Data%20Cubes&2952897404C6E62BCA257CD200146F61&0&2011-12&09.05.2014&Latest

[Photo by Christopher Flowers on Unsplash]


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