The high-protein diet is gaining popularity among those seeking to improve health, lose weight and build muscle. It is characterised by an increased intake of protein, which is an essential macronutrient in the diet. Protein has many key functions in the body and the right amount can provide numerous health benefits. In this article, we will discuss what a high-protein diet is, its principles and its benefits. We will also provide examples of protein-rich foods and advice on meal planning.