Marie said that she discovered Nutrisystem in 2007, and it helped her go from a size 14 to a size 4. Marie shared that she's been off Nutrisystem for 15 years, but she's taken the tools she learned from the program and continues to use them today.

Sometimes life just gets you off track and before you know it, you're 50 pounds heavier. But thanks to Nutrisystem,I lost the weight and have learned how to keep it off. They say you can't turn back time, but I'll tell you what, I certainly have so much more energy - and I feel better and younger, too.

I have been off of it [Nutrisystem] now for 15 years. I lost my weight 15 years ago, and I don't let myself get more than five pounds overweight, usually around holidays or something like that. You know, I'll eat a little extra.

Osmond was at her heaviest in 2007. At the time, she was 165 pounds and a size 14. That year, she tried Nutrisystem, the personalized meal delivery program, to help her slim down to a size 4.

How Does Nutrisystem Work? Nutrisystem's weight loss program is designed to be high in fiber and protein - nutrients that help you feel full. At the same time, the program decreases your overall calorie intake via its pre-portioned meals, creating a calorie deficit.

It's convenient and may lead to short-term weight loss, along with improvements in blood sugar management. However, it can be expensive and excessively restrictive. Nutrisystem meals and snacks are also highly processed and unsuitable if you follow a vegan, dairy-free, or gluten-free diet.

The Nutrisystem diet allows lean protein, healthy fats, low-fat dairy products, nonstarchy vegetables, certain fruits and whole-wheat carbohydrates. The program doesn't encourage sugary desserts, high-calorie meals, deep-fried foods, butter, starchy vegetables, such as potatoes, and sugary drinks.

Once you select a plan based on your age and sex, Nutrisystem delivers meals and snacks to your home so you don't have to think about what you're going to eat. You'll eat six times a day, and the premade meals focus on lean proteins, healthy fats, fiber, vegetables, and “smart” carbohydrates, according to the company.

Healthline diet score: 1.8 out of 5 Although many people report weight loss success from the program, Nutrisystem can be expensive, restrictive, and unsustainable over the long term.

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Healthline diet score: 1.8 out of 5 Although many people report weight loss success from the program, Nutrisystem can be expensive, restrictive, and unsustainable over the long term.

You get portion-controlled meals. The dieters in the prepackaged meal group also had lower levels of bad LDL cholesterol and triglycerides, a blood fat also linked to heart disease. Our properly portioned, easy to prepare meals are one of the main reasons why Nutrisystem really does work.