If Liz eats the same foods day after day, which nutritional concept is she breaking?

The concept of variety in nutrition emphasizes the importance of consuming a wide range of different foods within each food group to ensure a comprehensive intake of essential nutrients. When Liz eats the same foods day after day, she is not incorporating a diverse selection of foods, which can lead to nutritional deficiencies.

By not varying her food choices, she may miss out on important vitamins, minerals, and other beneficial compounds found in other foods. Variety helps to provide the body with a broader spectrum of nutrients and can also make meals more enjoyable, potentially aiding in adherence to a healthy eating pattern over time.

In contrast, while caloric balance refers to the relationship between calories consumed and burned, diversity involves including different food groups and types of foods within those groups. Quality pertains to the nutritional value of the foods consumed. Therefore, while these concepts are important for overall health, the specific issue at hand with Liz's eating habits relates directly to variety.