'carbohydrate-restricted' originates from the combination of 'carbohydrate' and 'restricted', where 'carbohydrate' refers to organic compounds found in foods and 'restricted' means limited or controlled.

The term 'carbohydrate-restricted' evolved from the growing awareness of dietary needs and the impact of carbohydrates on health, particularly in the context of weight management and metabolic health.

Initially, it meant limiting carbohydrate intake for specific health reasons, and this meaning has remained consistent in modern usage.