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Joanna O'Sullivan

Marketing & Communications Manager, Dietlicious

Graduate Diploma in Human Nutrition (Deakin University)

Joanna has been writing about nutrition, health and wellbeing for 10 years, eight of which have been with Dietlicious. She explores how everyday food choices shape long-term health outcomes, with a focus on practical, sustainable habits — nutrition, movement, sleep and lifestyle practices that work together — to help people reach their weight and health goals without extremes or quick fixes.

She originally trained in Economics before spending two decades in brand and product marketing, then returned to study nutrition — a shift driven by her own growing interest in food and health. She now combines both worlds, translating nutrition science into clear, achievable advice for real life.

Joanna loves nothing better than spending time in the kitchen. She strongly believes in the health benefits of cooking from scratch with fresh and nourishing ingredients. With three active teenagers and a hungry husband to feed, her home-cooked meals rarely last long. Like so many other time-poor mums, she knows that healthy eating should feel realistic, not restrictive.

Ozempic diet for type 2 diabetes – what to eat guide

Ozempic diet for type 2 diabetes: what to eat

Ozempic and Mounjaro are approved in Australia for type 2 diabetes management, not just weight loss. Here's what to eat to support blood sugar control while your appetite is reduced.
Nausea on semaglutide - image of woman feeling nauseous

How to manage nausea on semaglutide

If you’ve recently started taking semaglutide medications like Ozempic, Wegovy, Mounjaro, or Saxenda, you’re probably experiencing some digestive changes. Nausea on Ozempic and similar GLP-1 medications is one of the most frequently reported side effects — and it can catch people off guard. Nausea is incredibly common with GLP-1 medications. ...
Woman holding her hands in a heart shape over her stomach, symbolizing gut health and self-care

7 signs of an unhealthy gut - and how to fix it

Bloating, brain fog, poor sleep, skin breakouts — your body may be sending gut health SOS signals you're ignoring. Here's what to look for, what to avoid, and exactly what to eat to get your microbiome back on track.
Image of woman in supermarket reading nutrition information on back of packet

Why ditching ultra processed foods may be your ticket to ultimate health

What’s the secret to ultimate health and wellbeing? You might think good genes or good luck. Perhaps a good lifestyle, including exercise, sleep and stress management. But the number one thing? Diet. Are you rushing off to buy kale and sardines yet? Whilst we often think of what we should eat when we think of dieting, we’re going to turn ...
Ozempic side effects - GLP-1 side effects

Ozempic side effects: What every Australian should know before starting

GLP-1 weight loss medications — Ozempic, Wegovy, Mounjaro, Saxenda and Duromine — are now among the most prescribed medicines in Australia. Nearly 500,000 Australians are currently using them, and with Ozempic supply fully restored, Wegovy now widely available, and Mounjaro approved for both diabetes and weight management, that number is ...
Image of healthy clean eating foods including fruit, vegetables, nuts, wholegrains and legumes

How to maximise your Food Cleanse results: A nutritionist's guide

Doing a Food Cleanse is a great first step. But how you do it makes all the difference between feeling mildly better for a few days and walking away with real, lasting results. Whether you're approaching your first cleanse or you've done one before and want to get more out of it this time, this guide covers everything — from how to prepare your ...
Photo of fresh wholesome food that is naturally low in salt such as vegetables, fruit, nuts

DASH Diet Australia: what it is, how it works & how meal delivery makes it easy

If your GP has told you to watch your blood pressure, there's a good chance they've mentioned the DASH diet — even if it didn't stick. The name doesn't exactly sell itself. But behind the acronym (Dietary Approaches to Stop Hypertension) is the most clinically proven, most GP-recommended eating plan in Australia for managing high blood pressure ...
Woman on scales checking menopause weight gain

Menopause weight gain: why it happens and what actually helps

Why does weight creep up around your middle in midlife? Find out what drives it, how much is typical and which changes actually help.  
Weight loss meal plans delivered to your door: find the right diet plan for you

Weight loss meal plans delivered to your door: find the right diet plan for you

Starting a weight loss journey is exciting. Sticking to it when life gets busy is the hard part. That’s where ready-made meal delivery changes everything. Instead of planning, shopping and cooking every meal from scratch, you get chef-made, nutritionist-approved meals delivered straight to your door — ready to heat and eat in minutes. At ...
Anti-inflammatory diet benefits - sample of foods in an anti-inflammatory diet

The Anti-Inflammatory Diet: A Simple Way to Protect Your Long-Term Health

Chronic inflammation is linked to the majority of the world's leading causes of death — heart disease, type 2 diabetes, and a long list of other conditions most of us would like to avoid. The encouraging part: diet is one of the most powerful, evidence-backed ways to reduce it. Here's what an anti-inflammatory way of eating actually involves, and ...
How to stop eating processed foods

How to stop eating processed foods

If you've ever stood in front of your fridge at 7pm, exhausted from work, with no energy to cook, you're not alone. The instant meal in the freezer or the takeaway menu on the bench suddenly looks very appealing. This is the reality for most time-poor Australians, and it's precisely why ultra-processed foods have become such a dominant part of our ...
Weight loss vs fat loss: differences between the two and what matters most

Weight loss vs fat loss: differences between the two and what matters most

Have you ever experienced a dramatic drop in weight, only to have the weight creep back just as quickly? If so, you've experienced the difference between weight loss and fat loss firsthand. Recognising this distinction is crucial for anyone serious about improving their body composition, health, and long-term results.
Meal plan for type 2 diabetes

Meal plan for type 2 diabetes: a 7-day example

What does a real, balanced meal plan for type 2 diabetes or prediabetes actually look like? We break down a sample 7-day menu, the three nutritional pillars behind it, and practical tips for making it stick.
What to eat on weight loss medications

What to eat on weight loss medications: complete guide

If you're on Ozempic, Wegovy, Mounjaro, Saxenda or Duromine, here's exactly what to eat: real protein targets, a sample day, and how to manage side effects while your appetite is reduced.    
Is coffee good for weight loss?

Is coffee good for weight loss?

You’re dieting and can’t imagine mornings without your brew. The big question: can you still drink coffee and lose weight? The short answer: yes… and sometimes no. It depends on how you drink it, when you drink it, and what the rest of your diet and lifestyle look like.
How to read food labels for diabetes – Nutrition Information Panel guide

How to read food labels for diabetes

Food labels can feel like fine print, but for anyone managing diabetes they're a genuinely useful daily tool. Here's what actually matters on an Australian food label, and how it shifts depending on the type of diabetes you're managing.
Are frozen meals healthy? What to look for when comparing frozen vs fresh – and where to buy in Australia

Are frozen meals healthy? What to look for when comparing frozen vs fresh – and where to buy in Australia

Frozen food doesn’t always have the best reputation, mostly because the freezer section is filled with deep-fried snacks and sugary desserts. But freezing itself is just a smart way to slow deterioration and extend freshness. Before freezers were invented, people used ice boxes or even ice caves to preserve their food. Freezing truly is a tried, ...
How to read food labels in Australia: your ultimate guide to healthier choices

How to read food labels in Australia: your ultimate guide to healthier choices

If you’re trying to eat healthier, lose weight, or manage a health condition, navigating supermarket shelves can feel overwhelming. Packaging often makes bold claims - but what’s really inside? That’s where food labels come in. Understanding how to read food labels is essential for making informed decisions about what you eat. Whether you're ...
Image of healthy green vegetables that are great detox foods for weight loss

9 detox foods for weight loss

Few phrases trend harder than detox diet or cleanse when you’re chasing weight loss. But here’s the catch: your body already runs a sophisticated natural detoxification system that’s operating 24/7 via your liver, kidneys, lungs, skin, and the gastrointestinal tract. The smart play isn’t a pricey detox product, fancy supplements, or no ...
What to do when you hit a weight‑loss plateau

What to do when you hit a weight‑loss plateau

Few moments in a weight loss journey feel more frustrating than stepping on the scale day after day and seeing the same number. You haven’t changed your diet or skipped workouts, yet progress has stalled. Welcome to the weight loss plateau; a normal, biologically driven pause in fat loss that almost everyone meets sooner or later. Below ...
Does Ozempic cause muscle loss – why diet still matters

Does Ozempic cause muscle loss? Why diet still matters

Weight loss medications work mainly by suppressing appetite, not by choosing what kind of weight you lose. Here's why muscle loss is a real risk on Ozempic, Wegovy or Mounjaro, and the two things that actually protect against it.  
MEDIA RELEASE: Dietlicious addresses heart health with new low salt meals range

MEDIA RELEASE: Dietlicious addresses heart health with new low salt meals range

Dietlicious: Australia's first ready-meal provider to use low sodium Heart Salt Today Dietlicious has announced it has joined the fight against cardiovascular disease. They have become the first ready-made meal provider in Australia to make the switch away from regular salt to potassium-enriched salt, enabling them to offer a huge range of low ...
Why we switched to healthier Heart Salt in our meals

Why we switched to healthier Heart Salt in our meals

Australia is in the grips of a heart health crisis We know from the data that coronary heart disease is the leading cause of death in Australia. We also know that in combination, coronary heart disease, hypertension (high blood pressure) and stroke contribute to 44% of all deaths. When it comes to our hearts, and the vessels and arteries that feed ...
Beat the average life expectancy: top threats to your life span & how to tackle them

Beat the average life expectancy: top threats to your life span & how to tackle them

Aussie life expectancy has dropped for the first time in decades This alarming headline hit the news recently. Did you see it? It’s the unfortunate findings from the latest Australian Institute of Health and Welfare (AIHW) report. The report, which is issued every two years provides data on everything from hospitalisations, illnesses, causes of ...
Protein 101: Everything you need to know about high protein foods

Protein 101: Everything you need to know about high protein foods

What does protein do in the body? Protein is an important macronutrient for the human body. Proteins are made up of amino acids and these are used in various critical functions such as building and repair of bones and muscles, maintaining pH and fluid balance, making hormones and enzymes, and keeping the immune system strong. Proteins also ...
How to reverse diabetes naturally

How to reverse prediabetes naturally: 5 evidence-based tips

Prediabetes can often be reversed through diet and lifestyle change alone. Here are five evidence-based tips — and an honest look at what “reversal” and “remission” actually mean.  
How to live longer, stronger & healthier: Top 10 tips for good health this year

How to live longer, stronger & healthier: Top 10 tips for good health this year

Do you want to live healthier in 2024? Perhaps you’ve got #healthgoals you want to accomplish, doctor gave you some bad news, or you have just decided that your New Year’s resolution is to live to 100. Whatever your motivation, we’ve got ten top tips to get you feeling healthier and stronger, so you can live well and live longer. If you’re ...
How to host a festive and healthy Christmas day

How to host a festive and healthy Christmas day

With the Christmas countdown clock ticking, it’s time to start planning for an incredible Christmas feast with your loved ones. Indulging in all that the silly season has to offer is tradition, but it is possible to prepare yourself in advance for the calorie onslaught. Including some healthy and wholesome foods can be just as delicious and will ...
Can’t bear gym workouts? Try this new craze, exercise snacking!

Can’t bear gym workouts? Try this new craze, exercise snacking!

Exercise is an essential part of any healthy lifestyle, but it can be challenging to find time for regular long workouts. Enter exercise snacking - the concept of short bursts of exercise throughout the day, instead of an extended training routine. This approach offers numerous benefits for anyone who wants to improve their health and fitness ...
Enjoy good health with 5 top healthy eating & lifestyle hacks

Enjoy good health with 5 top healthy eating & lifestyle hacks

Want to be healthier this year than you were last year? Do you want to enjoy good health both now and also into the future, minimising your chance of illness and disease? Don’t we all! Sometimes health tips can be confusing and conflicting, so we’ve kept it really simple here. There are just 5 key healthy eating and lifestyle hacks to follow ...
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