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How to learn about portion size
Determine your dietary goals and recommended daily caloric intake.
Your portion needs will depend on age, sex, activity level, and weight goals. Online interactive dietary planners and calorie calculators can help more closely estimate your necessary daily calorie intake and precise portion sizes.
For instance, women whose goal is weight loss can typically succeed with about 1600 calories per day. If weight loss is your goal, your portions will be moderate and will consist mainly of foods that are low calorie and high in nutrients.