Dieter's concern is likely related to the amount of certain nutrients and substances they consume. Carbohydrates, fats, SODIUM, STARCH, and calories are all important components of a dieter's diet. Additionally, dieters may be concerned with their WAISTLINE, GIRTH, and FLAB, as these can be indicators of overall health. Lastly, dieters may also be concerned with their intake of these substances, as too much or too little can have negative effects on their health.