Protein, Fibres, and Fats
09 July 2025 ·
✔️ Medically Reviewed: 09 July 2025 by Emma Southworth

Protein, fibre, fats - what really matters?
You've started your weight loss journey and suddenly everyone’s talking about macros, protein, fibre and fats. It might feel overwhelming or just plain confusing. So, let's strip away the confusion and talk about what genuinely matters for your body right now.
Why protein matters
Protein isn't just for gym-goers and bodybuilders. It’s essential for anyone trying to lose weight healthily.
Here's why: when you lose weight, especially if you're using GLP-1 on your journey, your body risks breaking down muscle mass as well as fat.
Eating enough protein helps your body hold onto muscle, keeping your metabolism steady and your energy levels up.
Think back to yesterday. Jot down quickly if your meals had enough protein, and if not, write down easy ways you could add more today to reinforce your intention. Did your meals have enough protein, like chicken, beans, eggs or yoghurt?
If you're not sure, just take a moment now and think about how you could add protein into today's meals easily.
Fibre’s quiet superpower
Fibre might not sound exciting, but it’s quietly powerful. It’s the part of fruit, vegetables, whole grains and beans that your body can’t fully digest. This matters because fibre helps you feel fuller for longer and slows how quickly sugar is absorbed into your bloodstream. That can lead to fewer sugar spikes and more stable energy levels - making it easier to stay on track.
Ask yourself honestly: Are you regularly eating fibre-rich foods like veggies or whole grains? Consider setting a daily reminder to briefly check your fibre intake, making it easier to consistently maintain this good habit. If you're not regularly including fibre, are you regularly eating fibre-rich foods like veggies or whole grains? If not, what's a simple swap you can make at your next meal to boost your fibre intake?
Healthy fats aren’t your enemy
It’s easy to assume fats are the enemy, especially when you’re trying to lose weight. But healthy fats from foods like avocado, nuts, olive oil and oily fish support your body in important ways. They help you feel satisfied, aid the absorption of key vitamins and support hormone health.