As the old saying goes, ‘What gets measured gets managed,’ and it turns out, it applies to what we eat, too. If you’ve ever wondered whether structured meal plans make a difference to weight loss – rather than being just another fad – new research from Australia’s national science agency, the CSIRO, has the answer.
Using data from nearly 78,000 members of the CSIRO Total Wellbeing Diet, they found that those who used meal plans the most lost an average of 6.4 kg at 12 weeks, 24 per cent more than those who used them less frequently.
What’s more, people who used their meal plans most in the early stages of the program lost 6.9 kg after a year, 48 per cent more than those who used them the least.
“This research shows just how powerful meal planning can be. It provides the know-how of what to eat and helps build the habits of planning ahead, which we know are essential for long-term weight loss success,” CSIRO research scientist Dr Gilly Hendrie said of the findings.
Of course, you don’t need to sign up for a program to have the same effect. Even sitting down on a Sunday and mapping out some lunches and dinners for the week can make a big difference.
Planning works because it removes decision fatigue – that constant mental juggling of what to cook, buy or order when hunger hits. By deciding in advance, you’re less likely to default to takeaway and more likely to stick to balanced meals that support steady energy and weight loss.
It also encourages variety and nutritional balance. Prepping meals makes it easier to include a mix of protein, fibre-rich vegetables, wholegrains and healthy fats across the week, rather than relying on the same few meals (we’re looking at you, spaghetti bolognaise) on repeat. Over time, this can help retrain eating habits so healthier choices become second nature.
What is the CSIRO Total Wellbeing Diet?
The CSIRO Total Wellbeing Diet isn’t a quick-fix Instagram trend or a celebrity-endorsed cleanse – it’s a science-based program developed by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). Yes, it’s a diet, but unlike many other detoxes and meal plans, it is built around high-protein, lower-GI meals intended to help you feel full longer, manage cravings and support sustainable fat loss.
The program is delivered through an online platform and app where you can access meal planning tools, food and exercise trackers, and personalised guidance.
How does the CSIRO Total Wellbeing Diet work?
Like other diets, you sign up for a paid membership and unlock access to the program, which includes:
- Meal planning and recipes: you choose plans that fit your preferences and lifestyle, with options to swap meals and adapt menus as needed.
- Tracking tools: features in the app help you log food, activity and weight, which research shows is associated with better outcomes when used consistently.
- Daily to-dos and reminders: simple tasks like checking your weight or planning ahead help reinforce positive habits.
- Community support: you can also tap into group coaching, educational content and peer support.
Importantly, flexibility is baked in – you don’t have to follow every suggestion to the letter, and there are ways to adjust plans depending on your preferences.
To help you do this, they’ve recently launched a new AI-powered personalised tool, My Plan, which creates meal plans tailored to your needs, considering likes, dislikes, allergies, intolerances and eating styles. It’s also tailored to support conditions like high blood pressure and type 2 diabetes, or life stages such as menopause.
It’s worth noting that while CSIRO’s research found a positive link between planning and weight loss, no diet or digital platform is a guaranteed solution. A large part of the weight loss puzzle is consistency – find a plan you’ll follow and stick to it. And of course, always check in with your GP or a dietitian first.
