Which of the following is a consequence of inadequate protein intake?

Inadequate protein intake leads to muscle wasting, which is a significant consequence. Protein is essential for the growth, repair, and maintenance of body tissues, including muscles. When the body does not receive enough protein, it begins to break down muscle tissue for the amino acids needed to support vital functions and maintain metabolic processes. This can result in decreased muscle mass and strength over time, as the body prioritizes survival functions over muscle maintenance.

The other options reflect positive outcomes associated with adequate protein intake rather than consequences of deficiency. For instance, increased muscle mass and improved recovery are tied to sufficient protein consumption that supports muscle growth and repair mechanisms. Enhanced energy levels, while influenced by a host of nutritional factors, typically improve with a balanced diet that includes enough protein to support overall muscle health and physical performance.