How to lose weight and keep it off.

The most reliable way to lose weight is a moderate energy deficit you can keep up: eat a little less than your body uses, build meals around whole foods and protein, move more, and give it time. Fast fixes and fad diets tend to come back. This guide covers what actually drives fat loss and, just as importantly, how to make it stick.

Carrying extra weight is common: around 75% of Australian men and 60% of women carry too much body fat, according to the Better Health Channel. It applies across the board, men and women alike, and the fundamentals are the same for everyone. The aim here is a plan you can run for life, not a sprint you abandon.

What actually drives weight loss

At the core, losing weight means taking in less energy than your body uses, so it draws on stored fat for the difference. You create that deficit by changing what you eat, moving more, or both. There's no way around energy balance, and no single food that melts fat. What changes is how comfortable the deficit feels, and that's where the rest of this guide comes in.

A useful reframe from healthdirect: losing as little as 5 kg can improve how you feel and lower health risks, and there's no one-size-fits-all diet. You're looking for the version of "eat a bit less, move a bit more" that fits your life.

Why sustainable beats fast

Crash diets and fad plans work on the scale for a few weeks, then unravel. They're hard to sustain, often cut out whole food groups, and the weight usually returns once normal eating resumes. The Better Health Channel is blunt about fad diets: the best approach is slow, achievable change to eating and activity that you can keep going. Managing weight is a long-term habit, not a short-term diet.

Build your plate

You don't need to count every kilojoule. Most people do well by shifting the shape of their meals, guided by the Australian Dietary Guidelines:

• Vegetables first. Most are low in energy and high in fibre, which helps you feel full. Aim to fill half the plate.
• Enough protein at each meal (more on why below): lean meat, fish, eggs, dairy, tofu, legumes.
• Smart carbs and healthy fats in sensible portions, leaning on whole grains over refined.
• Cut the easy wins: swap sugary drinks, alcohol, fast food and ultra-processed snacks, which add a lot of energy for little fullness.

No food group has to be banned. Variety from the five food groups, with smaller portions of the energy-dense extras, does most of the work.

Protein, movement and sleep

Three things make a deficit work for you rather than against you:

• Protein helps preserve muscle while you lose fat and keeps you satisfied, so spread it across the day. See healthdirect on protein for sources and amounts.
• Strength training signals your body to keep muscle during weight loss, so more of what you lose is fat. Pair it with general activity. Our guide to training for your prime covers the foundations.
• Sleep and stress quietly drive appetite and cravings. Short sleep and high stress make a deficit much harder to hold, so they're part of the plan, not separate from it.

Make it stick

This is where most plans live or die. Sustainable behaviour change, not willpower, is what the evidence backs:

• Change one or two things at a time and let them become normal before adding more.
• Know your triggers, the times and situations where you overeat, and plan around them.
• Set up your environment so the easy choice is the better one (what's in the fridge wins).
• Judge the trend, not the day. Weight bounces daily with food, salt and water; the weekly direction is what matters. More on this in tracking progress beyond the scale (coming soon).

Common questions