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The Average Weight Loss Per Week on Jenny Craig

author image Leigh Wittman
Leigh Wittman has been writing professionally since 2007. She writes primarily on health, career advice, outdoor pursuits and travel for various websites. Wittman is a licensed nurse and studied nursing at Arizona State University.
The Average Weight Loss Per Week on Jenny Craig
A young woman measuring her waist. Photo Credit Highwaystarz-Photography/iStock/Getty Images

Jenny Craig is a weight loss program comprised entirely of prepackaged meals and snacks. This method of weight loss is often helpful for people struggling to manage their portions and find time to plan healthy meals, shop for suitable food and cook. If you're thinking about starting the Jenny Craig diet, you might be wondering how much weight you'll lose each week. Learning about weight loss and the Jenny Craig diet can help you to determine this. Consult your physician prior to embarking on the Jenny Craig diet or any other weight loss regimen.

Mathematics of Weight Loss

One pound of body fat consists of 3,500 calories. Therefore, to shed fat, you must burn more calories than you consume. According to the "Handbook of Obesity Treatment," aiming to eat 500 calories to 1,000 calories less than you burn each day is ideal for long-term weight loss, which would result in a weekly weight loss of 1 lb to 2 lb per week.

Individual Factors of Weight Loss

If you and your best friend go on the Jenny Craig diet today and weigh yourselves in a week, you'll find that the two of you have lost different amounts of weight -- even if you both stuck to the diet. This is because a wide array of individual factors influence the rate at which you lose weight, including your age, gender and lifestyle. In general, younger people tend to lose weight faster than older ones, men tend to lose weight faster than women, and people with active lifestyles tend to lose weight quicker than those with sedentary lifestyles.

Jenny Craig Weight Loss

The Jenny Craig diet is designed to promote a gradual weight loss of 1 lb to 2 lb per week by reducing the dieter's caloric consumption. The amount of weight lost each week is determined by your basal metabolic rate, exercise routine and compliance with the program. Even deviating a small amount from the diet can dramatically impact your weight loss. For example, if you were to drink a can of cola with lunch, eat a candy bar as an afternoon snack and consume an ounce of potato chips after dinner, you would have consumed 500 extra calories. This amount of extra calories would slow your weight loss by 1 lb each week.


The Jenny Craig diet is not for everyone. Many people find the Jenny Craig diet too restrictive, according to "Nutrition: Concepts and Controversies," because the plan forces dieters to eat only the prepackaged meals and snacks. Additionally, it is important to learn how to prepare healthy meals and recognize appropriate portion sizes to prevent rebound weight gain after you have reached your goal weight on the Jenny Craig diet. Don't give up on your goal of living a healthy lifestyle and obtaining a healthy body weight if you find that the Jenny Craig diet doesn't mesh well with your lifestyle. A dietitian can assist you in building a balanced diet.

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