Dietary Protein

Protein: Why It Matters for Energy, Fullness, Muscle Health and Recovery

Protein is often talked about in the nutrition world — from gym culture to wellness trends — but it’s about much more than building muscle.

As a New Zealand dietitian working in disordered eating and general nutrition, I often see protein either under-consumed, overcomplicated, or turned into something people feel pressured to “optimise.” In reality, protein is an essential nutrient that supports your body in many everyday ways, and most people benefit more from consistency than perfection.

What Is Protein?

Protein is a macronutrient found in both animal and plant foods. It’s made up of smaller building blocks called amino acids, which your body uses for growth, repair, and day-to-day functioning.

Protein is involved in:

• Building and repairing muscles and tissues

• Hormone and enzyme production

• Immune function

• Energy levels and concentration

• Feeling satisfied after meals and snacks

Unlike some nutrients, your body doesn’t store large amounts of protein for later use, which is why eating protein regularly throughout the day can be helpful.

How Much Protein Do You Need?

Protein needs vary depending on age, activity levels, medical conditions, and life stage.

A general guide for most adults is around:

• 1–1.5g of protein per kilogram of body weight per day

• Higher intakes may sometimes be beneficial during:

  • Exercise training

  • Injury recovery

  • Illness

  • Ageing

  • Eating disorder recovery

Rather than focusing only on total daily intake, it can help to spread protein across meals and snacks to support energy, fullness, and muscle repair more consistently.

Types of Protein

Animal Protein

Animal-based proteins contain all nine essential amino acids, making them “complete” protein sources.

Examples include:

• Meat and chicken

• Fish and seafood

• Eggs

• Milk, yoghurt, and cheese

These foods can provide protein alongside nutrients like iron, zinc, calcium, vitamin B12, and omega-3 fats.

Plant Protein

Plant proteins are also incredibly valuable and can absolutely meet protein needs.

Sources include:

• Legumes (beans, lentils, chickpeas)

• Tofu and tempeh

• Soy milk

• Nuts and seeds

• Wholegrains

Some plant proteins are lower in certain amino acids, but eating a variety of plant foods across the day easily supports adequate intake.

Why Protein Matters

Protein and Fullness

Protein can help meals feel more satisfying and support appetite regulation. Including protein alongside carbohydrates and fats often helps create meals that keep you fuller for longer.

Protein and Muscle Health

Protein helps maintain and repair muscle tissue. This is important not only for athletes, but also for:

• Everyday strength and function

• Recovery from illness or injury

• Healthy ageing

• Maintaining energy and mobility

Protein and Eating Disorder Recovery

In eating disorder recovery or disordered eating, protein can sometimes become overly controlled or feared — especially when diet culture pushes high-protein messaging or “clean eating” rules.

At the same time, inadequate protein intake may contribute to:

• Fatigue

• Poor concentration

• Increased hunger

• Reduced muscle mass

• Slower recovery

Nutrition works best when meals are balanced, flexible, and realistic — not when every gram is micromanaged.

Easy Ways to Increase Protein Intake

You don’t need protein powders or complicated meal plans to improve protein intake. Small additions throughout the day can make a meaningful difference.

Protein-Boosting Breakfast Ideas

• Add eggs to toast or wraps

• Add yoghurt to cereal or fruit

• Include milk or soy milk in smoothies

• Add chia seeds or nuts to oats

• Try baked beans on wholegrain toast

Protein Ideas for Lunch and Dinner

• Add chicken, tofu, eggs, beans, or lentils to meals

• Include legumes in soups, curries, tacos, or pasta sauces

• Add cheese or hummus to wraps and sandwiches

• Use edamame or roasted chickpeas in salads

• Include protein alongside carbohydrates rather than replacing them

Higher-Protein Snack Ideas

• Yoghurt with fruit and seeds

• Cheese and crackers

• Hummus with crackers or vegetables

• Trail mix with nuts and seeds

• Smoothies with milk, soy milk, or yoghurt

Protein Supplements: Do You Need Them?

Protein powders and supplements can sometimes be useful for convenience, busy schedules, or meeting increased needs, but they’re not essential for most people.

Whole foods provide protein alongside other important nutrients, fibre, and satisfaction. For many people, focusing on regular meals and snacks is far more beneficial than chasing “perfect” protein targets.

Final Thoughts

Protein plays an important role in energy, fullness, muscle health, recovery, and overall wellbeing.

The goal isn’t to obsess over numbers or follow rigid high-protein trends. Instead, aim for balanced meals that include a variety of protein sources throughout the day in a way that feels practical and sustainable.

If you’re struggling with food rules, low energy, confusing nutrition advice, or wanting support with eating disorder recovery or general nutrition, working with a dietitian can help you build a more balanced and realistic approach to eating.