
Noom is a mobile app that offers a psychology-based weight loss program that blends diet and exercise with community and expert support. It uses a colour-coded food system to help users understand which foods to eat more of and which to limit, and encourages food and weight logging, regular exercise, and behaviour changes to support long-term weight loss. While it has received positive reviews, it is not suitable for everyone, and there are some concerns about its classification of foods and potential preoccupation with food thoughts.
| Characteristics | Values |
|---|---|
| Type of diet | Behaviour change |
| Diet's focus | Eating fruits and vegetables and limiting processed foods |
| Effectiveness | 78% of Noom app users lost weight on the program |
| Average rating | 4.7 out of 5 stars on the App Store |
| Cost | $50 per month, $42.25 per month for a four-month subscription, $209 annually |
| Sample food items | Whole-grain bread, rolled oats, tofu, quinoa, shrimp, salsa, unsweetened milk alternatives, white fish, Greek (non-fat) yogurt, egg whites |
| Pros | Users set personal goals and track what they eat, access to a health coach, encourages regular exercise |
| Cons | Concerns about the labelling of "good" and "bad" foods, preoccupation with food thoughts from meal tracking, shame and body dissatisfaction possible with regular weigh-ins |
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What You'll Learn

Noom's colour-coded food system
Noom is a mobile app that helps users set personal goals and track what they eat. It is a psychology-based program that operates with the core belief of balance. Noom uses a colour-coded system to separate "good" and "bad" foods. Each colour signifies how much or how little of a food group a person should consume to stay on track toward their goals. The colour-coded system is as follows:
Green foods
Green-labelled foods usually contain the most nutrients and the least amount of calories. These foods will help users feel full on fewer calories. Most foods on the green list are fruits and vegetables, but there are other options, including whole-grain bread, rolled oats, tofu, quinoa, shrimp, salsa, unsweetened milk alternatives, white fish, Greek (non-fat) yoghurt, and egg whites.
Yellow foods
Yellow-labelled foods fall in between green and red foods. They have more calories or fewer healthy nutrients per serving than green foods. These foods can still be incorporated into a person's diet but not as frequently as green foods. Examples of yellow foods include lean meat and starches like turkey breast, grilled chicken, tuna, salmon, and lean beef. There are also vegetarian and vegan-friendly protein sources like eggs, black beans, and chickpeas. The yellow category also contains Greek yoghurt, avocado, whole-grain tortillas, popcorn, low-sodium canned soups, and instant potatoes.
Red foods
Red-labelled foods have the most calories and the least healthy nutrients. Noom suggests limiting these foods in your diet. The red category contains oils (olive oil, avocado oil, coconut oil) because of their fat content, seeds (chia seeds, flaxseeds, sunflower seeds, etc.), and nuts and nut butters.
The colour-coded system is more of a framework for thinking about how you eat rather than strict guidelines. Noom reminds users that red foods are not excluded and that the colour system doubles as a portion guide.
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The psychology behind Noom
Noom is a psychology-based program that operates with the core belief of balance. It is a digital weight loss program that matches users with a certified health coach. It is available as a mobile app that can be downloaded on a smartphone or tablet. Noom focuses on behavioural changes, so it calls itself a lifestyle rather than a diet. It is about understanding why you eat what you eat and creating new, more sustainable eating habits.
Noom uses a system that separates "good" and "bad" foods by assigning colours to different edible treats. Each colour signifies how much or how little one should eat to stay on track towards their goals. The green-labelled foods on the Noom diet usually contain the most nutrients and the least amount of calories, while red-labelled foods have more calories and fewer nutrients. Yellow-labelled foods fall somewhere in the middle. Noom does not specifically exclude any foods, which means the foods to avoid are not eliminated entirely. The colour system doubles as a portion guide.
Noom uses an algorithm to estimate your daily calorie needs based on your sex, age, height, weight, and answers to a series of lifestyle questions. It encourages food logging and weekly weigh-ins, which are associated with weight loss and long-term weight loss maintenance. It also encourages regular exercise by setting daily step goals and providing a generic workout guide. Users can log their physical activity in the app, which provides an extensive list of exercises to choose from.
Noom is not intended for anyone under 18, pregnant people, or those with an eating disorder. No reports of serious side effects or risks from following Noom have surfaced. However, some people may experience preoccupation with food thoughts from meal tracking and shame and body dissatisfaction from regular weigh-ins.
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Noom's effectiveness for weight loss
Noom is a mobile app that can be downloaded on smartphones and tablets. It is a psychology-based weight loss program that operates with the core belief of balance. It is designed to help users lose weight by understanding why they eat what they eat and how to create new, more sustainable eating habits. It is not intended for anyone under 18, pregnant people, or those with an eating disorder. Noom initially recommended a minimum of 1,200 calories per day for females and 1,400 calories per day for males, but they have since increased those minimums by 10%.
Noom uses an algorithm to estimate a user's daily calorie needs based on their sex, age, height, weight, and answers to a series of lifestyle questions. It encourages food logging and weekly weigh-ins, which are associated with weight loss and long-term weight loss maintenance. It also encourages regular exercise by setting daily step goals and providing a generic workout guide. Users can log their physical activity in the app, which provides an extensive list of exercises to choose from.
Noom uses a system that separates "good" and "bad" foods by assigning colors to different edible treats. Each color signifies how much or how little one should eat to stay on track toward their goals. The green-labeled foods usually contain the most nutrients and the least amount of calories, while red-labeled foods have more calories and fewer nutrients. Yellow-labeled foods fall somewhere in the middle. Fresh fruits, vegetables, and whole grains are labeled green, while lean proteins and low-fat dairy are tagged yellow, and healthy fats like olive oil, nuts, and nut butter are classified as orange.
Noom has an average rating of 4.7 out of 5 stars on the App Store, based on over 730,000 reviews. While some people love the app, others complain that canceling is not simple, and some say they could have been happier with the content or coaching. According to a retrospective study, 78% of Noom app users lost weight on the program, and 75% of individuals maintained at least 5% weight loss after one year. Noom's approach focuses on eating fruits and vegetables and limiting processed foods, which can lead to various health benefits, including a lower risk of cardiovascular disease and diabetes.
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Noom's cost and value for money
The Noom diet app is a subscription-based service that offers a blend of diet, exercise, and psychology-based support for long-term successful weight management. It encourages users to make behavioural changes to live a healthier lifestyle. The app is available on iOS and Android devices and offers a free 7-day trial, with prices for the trial ranging from $0.50 to $18.
The cost of the Noom app subscription starts at $70 per month, with decreasing rates for longer-term commitments. For example, a four-month subscription costs $42.25 per month, billed upfront as $169. An annual subscription costs $209, which is approximately $17.42 per month. Noom also offers additional services for extra costs, such as customised workout and meal plans.
The app provides users with a personalised plan based on their current weight, goal weight, and dieting and weight loss experience. It encourages food logging and weekly weigh-ins, which are associated with weight loss and long-term weight loss maintenance. Noom also sets daily step goals and provides a generic workout guide, with an extensive list of exercises to choose from.
The Noom diet has been shown to be effective in promoting weight loss. A 2023 study found that most overweight Noom users experienced lasting weight maintenance for one or even two years. Additionally, a retrospective study showed that 78% of Noom app users lost weight, and 75% of individuals maintained a weight loss of at least 5% after one year.
While the Noom app has received positive reviews for its accessibility and balanced approach to wellness, there are some downsides to consider. The app's labelling of "good" and "bad" foods has been criticised by some health experts, and there have been complaints about the difficulty of cancelling the subscription. Overall, the Noom diet app offers a comprehensive approach to weight loss and wellness, but the value for money will depend on individual user experiences and preferences.
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Noom's suitability for different people
Noom is a mobile app that can be downloaded on smartphones and tablets. It is a psychology-based weight loss program that blends diet and exercise with community and expert support. Noom is suitable for people who are looking for a lifestyle change rather than a quick-fix diet. It is designed to help users lose weight by understanding their eating habits and creating new, more sustainable habits.
Noom is suitable for people who are looking to lose weight and are willing to commit to a long-term program. It is also suitable for those who want to understand the reasons behind their eating habits and make different food choices. Noom encourages food logging and weekly weigh-ins, which are associated with weight loss and long-term weight loss maintenance. The app also provides a generic workout guide and encourages regular exercise by setting daily step goals.
Noom is not suitable for anyone under 18, pregnant people, or those with an eating disorder. It is also not recommended for people coping with or at risk for disordered eating. While Noom does not specifically exclude any foods, it does label foods as "good" or "bad" using a traffic light system. This system has been met with some concern from health experts, as it may lead to preoccupation with food thoughts and body dissatisfaction.
Noom may be suitable for people with chronic conditions or food sensitivities, as it can be adapted to specific dietary needs such as vegan, low-carb, lactose-free, or gluten-free diets. The app also provides support through coaches and community connections, which can be beneficial for those seeking additional encouragement and motivation.
Overall, Noom's suitability varies depending on the individual's goals, health status, and dietary needs. It is important for users to carefully consider their own circumstances and make informed decisions about whether Noom is the right choice for them.
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Frequently asked questions
Noom is a digital weight loss program that uses a mobile app to help users set personal goals, track what they eat, and understand why they eat what they eat. It is a psychology-based program that operates with the core belief of balance.
Noom uses a system that separates colours to different food items. Each colour signifies how much or how little one should eat to stay on track toward their goals. The green foods are the best, yellow foods are slightly less nutritious, and red foods are the most calorie-dense.
The Noom app requires a subscription to use and starts at $50 per month. As of 2022, a full membership is about $50 per month and is designed to last 16 weeks (four months). Noom also offers additional services for extra costs, like customised workout and meal plans.
Noom has been shown to be effective for weight loss. 78% of Noom app users lost weight on the program, and a 2023 study showed that 75% of individuals maintained at least 5% weight loss after one year. Noom also has a diabetes prevention program that has been officially recognised by the Centers for Disease Control and Prevention (CDC) for its efficacy.
The Noom Diet has been criticised for its labelling of "good" and "bad" foods, which may lead to preoccupation with food thoughts and body dissatisfaction. The app is also costly, and there have been complaints about the difficulty of cancelling the subscription.











































