Why are fats and oils not classified as a food group?

Fats and oils are not classified as a distinct food group because they are primarily sources of concentrated energy and essential fatty acids rather than providing a wide range of nutrients found in food groups like fruits, vegetables, grains, and proteins. Instead, they are typically categorized as part of the broader dietary fats, which include both healthy and unhealthy fats. While they play a crucial role in a balanced diet for energy and nutrient absorption, their consumption is recommended in moderation alongside a variety of other food groups.