Science

Plant-based protein sources

A practical guide to the plant proteins worth knowing, and the one nutrient (B12) worth watching.

Legumes

Lentils, chickpeas and beans combine solid protein with fibre — a rare pairing that also supports gut health.

Tofu, tempeh & edamame

Soy-based proteins are one of the few plant sources considered "complete" on their own, containing all nine essential amino acids.

Quinoa

A complete-protein grain, unusual among plant starches, and a useful base for a variety of meals.

Nuts & seeds

Lower in protein per serving than legumes, but add healthy fats and fibre alongside a meaningful protein contribution.

Seitan

Made from wheat gluten, very high in protein — but not suitable for anyone avoiding gluten.

Nutritional yeast

A popular addition for vegans, contributing protein and often fortified with B12 — worth checking the label, since B12 is otherwise hard to get from plants alone.

The real planning consideration

A varied mix across these categories through the week, rather than relying on one source, makes it considerably easier to hit adequate total protein and a full amino acid profile on a plant-based diet.

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