Protein: Are All Sources Equal?

Why protein matters

The word ‘Protein’ comes from the Greek word ‘proteios’, meaning “of first importance”. That name gives a pretty good clue as to why protein matters for health and performance…

Protein isn’t just about building muscle. It plays essential roles across the whole body, including repairing and rebuilding tissues, supporting immune function, forming cells, producing hormones and enzymes, repairing DNA, and transporting nutrients. A simple way to think about protein is as the body’s LEGO building blocks

Not all protein is absorbed the same

Not all protein is absorbed by the body in the same way. Animal-based proteins such as meat, fish, eggs, milk, and cheese are usually easy for the body to digest and use. Plant-based proteins can be slightly harder to digest because they contain natural substances and structures that slow digestion. However, by combining different plant protein sources, we can create high-quality protein that provides all the amino acids the body needs - more on that later!

How food is cooked, processed, and prepared also affects how easily protein is absorbed.

Balance matters

More protein is not always better. Protein has become a very “sexy” word in nutrition marketing, but focusing only on protein can mean missing out on other vital nutrients such as carbohydrates, fats, vitamins, and minerals. Performance comes from getting the overall balance right, not just chasing protein numbers.

Focus on distribution, not just totals

Practically, instead of stressing about total daily protein, it’s often more effective for rugby players to focus on regular protein intake across the day - making sure each meal and snack contains a good protein source.

Current recommendations suggest aiming for around 0.4 g of protein per kg bodyweight per meal as an ideal target to support muscle repair and adaptation.

For a more detailed breakdown of how much protein you need for training and games check out our protein and carb requirement guide.