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<p><a href="http://www.dx.doi.org/10.1038/sj.ejcn.1601775">Four in five</a> primary school students eat a packed lunch every day, costing parents around <a href="https://doi.org/10.2196/25256">A$20 a week</a>. That’s almost <a href="https://www.abs.gov.au/statistics/people/education/schools/latest-release">10 million</a> lunchboxes across Australia every week.</p>
<p>But <a href="https://ijbnpa.biomedcentral.com/">nine in ten</a> of these contain so-called “<a href="https://www.eatforhealth.gov.au/food-essentials/discretionary-food-and-drink-choices">discretionary foods</a>” such as cake, chips, muesli bars and fruit juice. These foods are not necessary for a healthy diet, and are often high in saturated fat, sugar and salt, and low in fibre. <a href="http://www.dx.doi.org/10.1017/S1368980019003379">40%</a> of energy in an average lunchbox comes from these discretionary foods.</p>
<p>Busy parents need to find replacements for these discretionary foods, which are not only healthy, but also easy, cheap and tasty. <a href="https://doi.org/10.2196/25256">Our research</a> shows parents can make healthier swaps, without costing them more.</p>
<h2>What children should be eating</h2>
<p>Healthy lunchboxes can play a big role in positively influencing students <a href="https://www.researchgate.net/publication/252059240_What_is_the_relationship_between_child_nutrition_and_school_outcomes">behaviour in the classroom</a>, <a href="https://www.researchgate.net/publication/252059240_What_is_the_relationship_between_child_nutrition_and_school_outcomes">academic achievement</a>, <a href="https://apps.who.int/iris/handle/10665/43923">health</a> and <a href="https://apps.who.int/iris/bitstream/handle/10665/259349/WHO-NMH-PND-ECHO-17.1-eng.pdf">weight</a>.</p>
<p>Generally children should have a <a href="https://www.eatforhealth.gov.au/sites/default/files/content/The%20Guidelines/n55f_children_brochure.pdf">variety of foods</a> from the five core food groups: vegetables and legumes; fruit; grain foods (mostly wholegrain and those high in fibre); lean meats and poultry, fish, eggs, tofu, nuts and seeds; milk, yoghurt and cheese (or alternatives).</p>
<p>Depending on their age and sex, children should consume somewhere between <a href="https://www.nrv.gov.au/dietary-energy">4,500-7,000</a> kilojoules per day. But it’s also important <a href="https://www.eatforhealth.gov.au/sites/default/files/content/The%20Guidelines/n55f_children_brochure.pdf">where</a> they get that energy from. It’s <a href="https://www1.health.gov.au/internet/publications/publishing.nsf/Content/gug-family-toc%7Egug-family-guidelines">recommended</a> children limit their intake of saturated fat, salt and added sugar.</p>
<p> ;</p>
<p>A healthy lunchbox doesn’t need to be <a href="https://www.youtube.com/watch?v=Pg98pAJ1AkE&;feature=emb_logo">fancy</a>, <a href="https://www.youtube.com/watch?v=YTu9NEnhLuQ">expensive</a> or <a href="https://www.youtube.com/watch?v=rJppW7w7yL0">time consuming</a>.</p>
<p>A healthy recess would mean, for instance, children eating one serving of fruit or vegetables, some <a href="https://www.goodforkids.nsw.gov.au/primary-schools/swap-it/packing-an-everyday-lunchbox/">yoghurt and a few rice crackers</a>. At lunch, children could eat a simple sandwich, wrap or roll, or leftovers made from <a href="https://www.eatforhealth.gov.au/sites/default/files/content/The%20Guidelines/n55f_children_brochure.pdf">core food group</a> ingredients such as veggie-loaded wholegrain pasta.</p>
<h2>How to replace junk foods with healthy ones</h2>
<p>Parents have told us they <a href="http://www.dx.doi.org/10.2196/25256">want</a> convenient and cheap foods to pack, that their children want to eat. So, we developed a healthy lunchbox program called <a href="https://doi.org/10.2196/25256">SWAP IT</a>. In this program, we provide simple ideas for swapping unhealthy foods kids might like to healthier ones comparable on cost, taste, texture and preparation time.</p>
<p>For instance, you could swap</p>
<ul>
<li>
<p>Shapes for rice crackers. This will mean 159 less kJ, 77% less saturated fat and 39% less sodium</p>
</li>
<li>
<p>chips for popcorn. This is 176 less kJ, 57% less saturated fat, 56% less sodium</p>
</li>
<li>
<p>cake for pikelets means 464 less kJ and 63% less sugar.</p>
</li>
</ul>
<p>Perhaps one of easiest things you could do is to try ensure your kids stick to drinking water.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=1000&;fit=clip"><img src="https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=754&;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=600&;h=600&;fit=crop&;dpr=1 600w, https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=30&;auto=format&;w=600&;h=600&;fit=crop&;dpr=2 1200w, https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=15&;auto=format&;w=600&;h=600&;fit=crop&;dpr=3 1800w, https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=754&;h=754&;fit=crop&;dpr=1 754w, https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=30&;auto=format&;w=754&;h=754&;fit=crop&;dpr=2 1508w, https://images.theconversation.com/files/410282/original/file-20210708-31292-tpm004.png?ixlib=rb-1.1.0&;q=15&;auto=format&;w=754&;h=754&;fit=crop&;dpr=3 2262w" alt="A picture showing some of the swaps outlined above." /></a><figcaption><span class="caption">Calculations are made based on the serving sizes. (Shapes 25g, rice crackers 20g, Smith chips 19g, popcorn 13g, slice of cake 75g, 3 pikelets 75g)</span> <span class="attribution"><span class="license">Author provided</span></span></figcaption></figure>
<p>Our research found <a href="https://www.goodforkids.nsw.gov.au/primary-schools/swap-it/tips/">SWAP IT</a> supported parents and students to reduce energy from discretionary foods by 600kJ per week. Research suggests a small reduction of <a href="https://doi.org/10.2196/25256">600kJ</a> per week is enough to meaningfully impact population levels of obesity.</p>
<h2>It can be rolled out to schools</h2>
<p>Parents <a href="https://www.news.com.au/lifestyle/parenting/kids/mum-receives-warning-note-from-school-over-bad-food-in-lunch-box/news-story/7d2e9af2d84bb403bab7155746c3939e">are sometimes blamed</a> for unhealthy lunchboxes.</p>
<p>But a barrage of unhealthy foods are <a href="https://theconversation.com/no-its-not-just-a-lack-of-control-that-makes-australians-overweight-heres-whats-driving-our-unhealthy-food-habits-162512">promoted</a> to parents and children, often disguised as healthy choices. Parents and children see as many as <a href="https://www.cancercouncil.com.au/news/food-advertising-endangering-kids-health/">ten junk food adverts</a> per hour. And more than half of parents report their child’s “<a href="https://theconversation.com/give-in-to-pester-power-at-the-supermarket-checkout-youre-not-alone-11205">pester power</a>” influences what they pack in their lunchbox.</p>
<p> ;</p>
<p>Parents <a href="https://doi.org/10.2196/25256">told us</a> they wanted easy to access information when they were in the supermarket. So we got parents to sign up to SWAP IT via their school’s usual <a href="https://www.moqproducts.com.au/skoolbag/">communication</a> <a href="https://www.flexischools.com.au/">app</a>. Around <a href="http://www.dx.doi.org/10.1002/hpja.57">two-thirds</a> of primary schools used such apps.</p>
<p>We prompted parents with swap ideas each week by sending push notifications to their phones. We <a href="https://doi.org/10.1186/s12966-019-0812-7">found 84%</a> of parents liked having the messages sent directly to their phones.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=1000&;fit=clip"><img src="https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=754&;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=600&;h=600&;fit=crop&;dpr=1 600w, https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=30&;auto=format&;w=600&;h=600&;fit=crop&;dpr=2 1200w, https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=15&;auto=format&;w=600&;h=600&;fit=crop&;dpr=3 1800w, https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=45&;auto=format&;w=754&;h=754&;fit=crop&;dpr=1 754w, https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=30&;auto=format&;w=754&;h=754&;fit=crop&;dpr=2 1508w, https://images.theconversation.com/files/409784/original/file-20210706-23-5c0cju.png?ixlib=rb-1.1.0&;q=15&;auto=format&;w=754&;h=754&;fit=crop&;dpr=3 2262w" alt="Two phones side by side. The first phone shows a SWAP IT notification. The second phone shows an example of a swap from muffin bites to scones." /></a><figcaption><span class="caption">Example notification from the SWAP IT school lunchbox program.</span> <span class="attribution"><span class="source">Author provided</span></span></figcaption></figure>
<p>Research shows <a href="https://www.dx.doi.org/10.1002/hpja.57">four in five</a> primary school principals agree it is a school’s role to support parents to pack healthy lunchboxes. We found SWAP IT could be rolled-out to schools through their communication apps at a cost of <a href="http://www.dx.doi.org/10.2196/25256">less</a> than <a href="https://doi.org/10.1186/s12966-019-0812-7">A$1,800</a> per school.</p>
<p>Investment in promoting a healthy diet is <a href="https://www.phaa.net.au/documents/item/2870">cost-effective</a>, as less people end up in hospital and productivity is improved.</p>
<figure><iframe src="https://www.youtube.com/embed/Pg98pAJ1AkE?wmode=transparent&;start=59" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption><span class="caption">Lunchbox swap ideas for Monday to Friday that are cheap, simple, healthy and tasty.</span></figcaption></figure>
<p><em>Schools across Australia can <a href="https://www.goodforkids.nsw.gov.au/primary-schools/swap-it/express-your-interest/">register their interest</a> in the SWAP IT program. In the future, schools could choose to sign up to SWAP IT, in a similar way to signing up to other programs such as <a href="https://www.crunchandsip.com.au/">Crunch &; Sip</a>.</em><!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;" src="https://counter.theconversation.com/content/163646/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p>
<h6><a href="https://theconversation.com/profiles/matthew-mclaughlin-346591">Matthew Mclaughlin</a>, PhD Candidate, School of Medicine and Public Health, <em><a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em>; <a href="https://theconversation.com/profiles/alison-brown-791151">Alison Brown</a>, PhD Candidate, <em><a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em>; <a href="https://theconversation.com/profiles/jannah-jones-1246609">Jannah Jones</a>, Postdoctoral Researcher, <em><a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em>; <a href="https://theconversation.com/profiles/luke-wolfenden-1237312">Luke Wolfenden</a>, Professor (Public Health), <em><a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a></em>, and <a href="https://theconversation.com/profiles/rachel-sutherland-1246780">Rachel Sutherland</a>, Conjoint Lecturer, <em><a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle. </a></em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/swap-shapes-for-rice-crackers-chips-for-popcorn-parents-can-improve-their-kids-diet-with-these-healthier-lunchbox-options-163646">original article</a>.</h6>

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