With Nutrisystem you can lose as much as 10 pounds within the first week. This is the typical result for the most weight lost that I have encountered using Nutrisystem. As the weeks go by you start losing less and less weight because your body goes into a mode where it decreases it's metabolic processes in order to save energy. Why? The reason is your body realizes the decrease in calories and in a sense thinks you are starving this is why you might feel hungry but only last until your body adjusts. After the first few weeks you will start to constantly lose about 2-3 pounds a week without exercising. So considering this how long does it take to lose 20 pounds? The majority of people report losing this on different weeks, the average would be 3-5 weeks. This is the end of my review. Scroll to the bottom of the page to see some screen shots of peoples reports from forums.

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To answer this question we have to look at the science or psychology of weight. Every individual person has a biological weight set point, this point is determined by your genes and ranges from 100-200 pounds. What is this biological point important? Well this point is important because scientist discovered that you can only go about 30 pounds above or below your weight if you are 150 lbs so essentially 10% of your body mass.
If you have a high set point and you try to lose weight, what will occur is your body lowers the metabolism and conserve fat reserves and energy. This is why it is important to exercise while dieting because your body works against your diet. Once you are off the diet and you go back to your normal eating routine that Is food with high calories, your body will store it as fat cells to increase your weight.
Best way to stay off the weight you lost is change or alter your eating habits to remain at the lowest point your body will allow without making you feel hungry while still being healthy.

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With a NutriSystem you do not need to think about what to eat because your meals are prepackaged. What does this mean for you? Well for one thing you can lose weight with ease because you don't have too cook, weight or measure any meals you simply need to "just pop it in the microwave". Even if you are away from home you can take your meal anywhere since they are not refrigerated. The number of verity NutriSystem offers you, you are bound to find some foods that you love and if you don't like a particular meal you can return them within 30 days and get your money back. So how will this help you lose weight? Nutrisystem provides the perfect proportions so you learn what portions to eat as well as good meal choices so you can lose pounds and remain in that state! With a perfect combination of fresh fruits, vegetables and diary supplements you will lose weight fast and remain healthy! You learn to eat smaller portions because large part of this easy (you just open and microwave) diet is portion control.
Have you tried other weight loss products and failed because you cheated when cooking your meals? Nutrisystem eliminates this with pre-prepared meals. If you are really ready to lose weight then you have nothing to lose with over 120 different meals and desserts as well as forum to support you until you reach your goal. If you are unsure because of the cost of the food then think of it this way, you will still be eating food anyway and if you often eat out then NutriSystem should actually be cheaper.

NutriSystem Nourish Diet plan is a "send you the food" diet plan. Its sales in 2006 totaled $435 million through September, so it is a major factor in the $800 million home delivery diet food market. It attained the No. 1 spot on Forbes magazine's Best 200 Small Companies in America. Competitors are Jenny Craig, who started as a NutriSystem employee, and "Seattle Sutton's Healthy Eating".NutriSystem had approximately 800,000 customers in 2006.
The NutriSystem Diet is based on the Glycemic Index of Carbohydrates. Foods with a low glycemic index raise your blood glucose levels slower and over a longer period of time than foods with a high glycemic index. Combined with a low fat diet, exercise, and frequent smaller portioned meals, the glycemic index diet is supposed to reduce hunger (due to a constant blood glucose). There is some support for weight loss and health benefits of low glycemic-index diets in controlled scientific studies,however, some other studies have suggested there is no long-term benefit to these diets.

"Americans, aided by the restaurant industry, have lost all sense of what normal portioning is," according to the company's chief nutritionist, Jay Satz. A goal of the program is that the education about portion size will shift to the person's consumption of other food when the program ends.

The diet consists of 3 meals plus dessert/snacks which cost about $10 per day. Clients order the food up front and receive a shipment every 28 days, which forms the base for each meal. None of the food needs refrigeration. You must supply 50% to 60% of the total food for the diet on your own, in the form of fresh fruit, salads, low GI carbohydrates including bread, eggs and low or no-fat yogurt and cheese. Clients can customize their orders to include their favorite foods from a list of approximately sixteen breakfasts, thirty lunches, twenty desserts/snacks, and forty dinners. Substitution in client food choices are made by the NutriSystem warehouse in many cases, but can be corrected quickly and at no cost by calling their headquarters. Vegetarian, Type II Diabetic, and Silver (senior citizen) plans are available in addition to normal male and female meal plans.

In 2005 the core group of customers were women in their 20's through 50's. In 2006, the company increased its marketing to men. Mike Golic, Dan Marino, Don Shula, and John Kruk are among those who have endorsed this product.

The company started out in 1972 selling a liquid protein diet, which it abandoned in 1978 due to the growth of competition. It then started selling food which was packaged and preserved with the latest techniques in portion controlled packages, to take the decisions out of dining. The company went bankrupt in the early 1990's and closed down its weight-loss centers, where customers weighed in and got their meals. It reemerged in 1999 as an internet advertiser, and a publicly traded company, with the meals shipped to consumers. CEO Michael Hagen shifted advertising to TV, using satisfied customers in ads. Clients can call, email or chat online with the weight loss counselors for advice or support. The average customer stays on the program 10 weeks and loses 20 pounds. Many regain the weight lost, and many come back for more delivered diet meals.

NutriSystem's 2007 market value was approximately 2 billion dollars.