Noom review – The ultimate weight loss program?


Noom Review Summary

Noom is a personalized nutrition app that helps individuals form healthier habits to improve their diet. Learn more in our Noom review!

Nebula Genomics



Noom largely succeeds in helping consumers with their weight loss goals although the advice is often generic and not customized to the individual.


Edited by Christina Swords, Ph.D.

7 Facts from our Noom Review

  1. About: Noom is a habit-based customizable weight loss app to help people make long term changes.
  2. Company: The company was founded in 2008 by Artem Petakov and Saeju Jeong, and was launched as an app in 2016.
  3. How much is Noom: The discounted subscription costs $150 for 6 months, with custom meal and workout plan add-ons for $120 each.
  4. Users: As of 2020, Noom users are up to has 45 million people worldwide 
  5. Reviews: Noom diet reviews are mixed. While some users see incredible results in just 16 weeks, others have previously criticized the app’s nutrition plans. 
  6. Privacy: Noom uses TLS encryption to ensure that user data is safe. To enhance the user experience, Noom does use tracking technologies to collect some information. 
  7. Complementary products: While Noom does its best to customize its plan for all users, it does not account for genetic data. Take a look at the Whole Genome Sequencing DNA test offered by Nebula Genomics!

Noom Introduction

What is Noom? This is a review of Noom. Often referred to as “Weight Watchers for millennials”, this company is a personalized nutrition app that helps individuals form healthier habits. The company was founded in 2008 by Artem Petakov and Saeju Jeong, and launched as an app in 2016. 

In just one app, users have eating plans from registered dietitians, along with access to personal trainers, workouts, recipes, and support. The aim for most users is to lose weight, form healthy eating habits, reduce chronic health problems, and reverse diseases such as type 2 diabetes

The Noom program has received a lot of attention, in addition to receiving recognition from the Centers for Disease Control and Prevention (CDC). This fast-growing company quadrupled its revenue to $237 million in 2020 alone. 

In this review, we break down exactly how Noom works, and dive into the genetics behind diet, fitness, and weight management. 

Noom’s mission is to help people form healthier habits.
Noom’s mission is to help people form healthier habits
Did you know that your DNA determines which foods are best for you if you want to lose weight? However, most genetic tests decode only 0.02% of your DNA. At Nebula Genomics, we offer Whole Genome Sequencing – the most complete DNA test that decodes 100% of your DNA. It will enable you to learn more about your wellness, health, and diet than any other DNA test! Click here to learn more!

A Brief Dive Into Hunger

Like all other organisms, human beings need nutrition to sustain life. What we eat—and often, how much we eat—has important consequences for our health. Eating is essential to meet our immediate metabolic needs and to store excess energy to keep us alive when we’re fasting.  

One of the most important functions of our bodies is to maintain energy balance. Our brain detects “hunger” and “satiated” signals from our gastrointestinal tract, fat cells, and internal organs. In response, it triggers a series of cellular and behavioral changes. 

In simple terms, when our brain detects that we have low blood sugar, we feel hungry. Similarly, when our blood sugar rises, we feel satiated. 

The brain controls our hunger and satiety based on information from our internal organs
The brain controls our hunger and satiety based on information from our internal organs

But if our bodies are hardwired to intuitively know how to eat, why is weight management one of the biggest problems in the modern world? From the ketogenic diet to intermittent fasting, weight loss seems to be a never-ending trend. However, despite the prevalence of these diets, it is becoming overwhelmingly clear that there is no “one size fits all” approach to a healthy lifestyle.

The Genetics of Weight, Eating, and Metabolism

What is a healthy weight? How much should one person eat? These are questions that many individuals ask themselves prior to embarking on a health journey. However, due to the role of genetics in body size and metabolism, a standard answer doesn’t exist. 

Genetics plays an important role in determining both body size and energy requirements. Based on twin studies on bodyweight, genes can explain 50-90% of the variance in body mass index (BMI). 

The same body size that can be healthy for one person, may not be healthy for another. Individuals within a “healthy BMI range” can present metabolic disorders, while individuals in the “obese range” can be perfectly healthy

Consequently, the act of managing one’s weight, and living a healthy lifestyle is unique to each person. Body size, energy requirements, and signals of hunger and satiety can vary for each individual. Even some taste preferences, which have been regarded as highly variable, can be determined by genetics. 

Can You Personalize Your Diet Based on Genetics?  

Nutrigenetics is a new field of research that studies the effect of genes on an individual’s nutritional needs. 

An individual’s genes can determine their predisposition to weight, insulin resistance, cardiovascular disease, and more. This is one of the reasons why doctors often ask individuals to report their family history (such as diabetes) when signing on new patients. 

On a gene level, studies show that the number of copies of certain genes can predispose individuals to overweight and obesity. For example, having a reduced copy number of the salivary amylase gene has been associated with a higher BMI. 

Since individual needs can be radically different, the same nutritional regimen is not optimal for two different people. In addition to preferences and lifestyle goals, genetics is an important factor to consider for personalized nutrition.  

Noom Review

How Does Noom Work?

When signing up, users can choose one of two options: “Get Fit for Good”, or “Lose Weight for Good”. From here on, all users fill out a basic survey by using their Noom login on 

Noom Review Part 1: Fill Out the Survey 

The first part of the survey is to create a demographic profile. This is where users input their current height and weight, in addition to a “goal weight”.  

The Noom plan is geared towards creating long-lasting results.
The Noom plan is geared towards creating long-lasting results

The company also asks users about their current activity levels, how often they eat, what they eat (ex: sandwiches versus soups/salads), and where they live. The survey then asks about potential health risks, such as cardiovascular disease, kidney disease, diabetes, and depression

After filling out each section, the Noom app estimates how long it would take the user to get to their “goal weight”. It should be noted that the app doesn’t include a separate interface for individuals who don’t want to lose or gain weight. For example, if your current weight and goal weight are the same, Noom still tells you that it will take four months to reach your health goal. 

Based on your goal, Noom estimates a timeframe to achieve it.
Based on your goal, Noom estimates a timeframe to achieve it

The next part of the survey focuses on customizing the user’s plan based on habits and behaviors. Noom asks users the reasons for weight gain in the past, and how long it has been since the user was at their ideal weight. Other questions include details about previous weight loss attempts and the user’s ideal relationship with weight loss.

Noom’s survey asks users about what they want their weight loss journey to look like
Noom’s survey asks users about what they want their weight loss journey to look like

Finally, the last part of the survey is all about activity, nutrition, and cognitive-behavioral therapy. Here, Noom tries to get a sense of the user’s motivation, the current state of mind, and relationship with food. The survey also asks about dietary patterns, such as when and why you are most likely to grab a snack.  

With their survey, Noom gets a sense of the user’s current habits, motivations, and state of mind.
With their survey, Noom gets a sense of the user’s current habits, motivations, and state of mind

This is where users can also pick and choose the other things they want to work on, such as sleep, stress, and digestion. It also gets a sense of your current time commitments and workout regime. Users make their first goal, whether it is to run a 5K or feel more comfortable in their bodies. 

Finally, at the end of the survey, users can create their account.

Noom Review Part 2: Pick a Subscription Plan

After filling out the survey and creating an account, users can start a 14-day free trial.

How much does Noom cost? After the trial, users start a six-month subscription. Noom costs between $150 or $25 per month. Noom discount codes are available on websites such as RetailMeNot. Users can choose to invest in the following additional custom plans: 

Custom Meal Plan: A customized meal plan can be purchased for $120. This add on is particularly useful for those with dietary restrictions.

Custom Workout Plan: A custom workout plan is delivered in the form of a PDF document, and is useful for those just starting their fitness journey. Like the meal plan, the custom workout plan cost is $120.

Custom Meal and Workout Plan: $240

How to cancel Noom: You can cancel your subscription by accessing your subscription on your smart phone’s settings page and click on “Cancel Subscription”.

Noom Review Part 3: Build Your Knowledge 

Once all of the above details are out of the way, users are free to download the Noom app. True to their word, the app is filled with pop quizzes, positive quotes, and research to uplift the user. 

As a part of the plan, users go through a number of modules every day: 

  • Module 1: This module is about building a solid foundation, learning what to eat, managing cravings, and more.
  • Module 2: Here, users learn how to master their motivation to keep going.
  • Module 3: This module is all about habit formation for success. This includes prioritizing breakfast, controlling portions, and eating regularly and mindfully.
  • Module 4: Lastly, this module tackles “psychology” 

By including these learning modules along with the Noom diet plan, the app ensures that users are learning and creating healthier habits.  

Noom Review Part 4: Learn the Noom Method

What is Noom diet? Noom presents a unique way of helping individuals achieve their goals. Put simply, the Noom weight loss app is a one-stop-shop for tracking calories, exercise, weight, blood glucose, blood pressure, and more. In addition, users have access to a recipe library and articles. Lastly, Noom also includes access to a health coach and a chat with group mates.

Noom claims to teach users about the differences between caloric density meals that can be either calorie-dense or nutrient-dense. Foods are categorized into Noom food lists that are “Noom red foods”, “Noom green foods”, and “Noom yellow foods”. Red foods are generally calorically dense and should be eaten less often. Unlike other weight loss apps, Noom does not label food as “good” vs “bad” or “healthy foods” vs “unhealthy foods”. They use a psychological approach to their coaching to result in behavioral change and do not engage in fad diets (keto, gluten-free, etc.)

The Noom method is based on a color coded system.
Noom categorizes Foods into Green, Yellow, and Red. The app also gives a guide on portion sizes.
Noom categorizes Foods into Green, Yellow, and Red. The app also gives a guide on portion sizes

Once users use food logging to input their meals into the food database, Noom analyzes the data and gives a breakdown of green, red, and yellow foods. The “Noom diet” consists of a balance of the three types of foods, in a quantity that matches the user’s goals.

Similar to food goals, users can sync the Noom app with their Fitbit or Apple Health to add their steps and exercise. The daily calorie goal changes based on the additional exercise that is logged in.  

Noom Review Part 5: Implementation

This part is where the magic happens. However, it is also where Noom showcases exactly what it is – a weight loss app. 

The first few months on the plan are dedicated to eating in a caloric deficit to lose a set amount of weight. Once this phase is over, users move on to the maintenance phase, where they shift their eating patterns to maintain their weight. To get additional support, users have access to a goal specialist, and a group chat. 

An example of the intro to a personalized calorie budget.
Based on the user’s health information and goal, Noom calculates the number of calories they need to consume every day.
Based on the user’s health information and goal, Noom calculates the number of calories they need to consume every day

However, it is important to note that while Noom claims to be a personalized nutrition and health plan, some important aspects are not customizable. Firstly, the daily caloric goals are calculated based on the Nerd Harris Benedict’s Equation, which is a very generic method. 

Furthermore, calorie and weight goals are not always healthy. For an individual who is 5’4” and 123 lbs, Noom defaults to a 10 lb weight loss plan, even if the user does not choose weight loss in the app’s survey. In addition, Noom recommends a diet of 1380 calories, which is barely enough to cover an individual’s Basal Metabolic Rate.

Such a low level of dietary intake can be incredibly harmful, especially if an individual is genetically sensitive to prolonged caloric restriction. Studies in college-aged women have shown that a caloric restriction of as little as 8% of regular intake can disturb the luteal phase of the menstrual cycle.

Overall, the Noom app does not take into account the user’s genetics or body composition. 

Review of Noom Data Privacy

As per their privacy policy, Noom is dedicated to safeguarding “Protected Health Information”, which refers to a user’s demographic, physical, or mental health information. In addition to user-provided information, Noom also collects non-identifying demographic information using its website and mobile app. 

Noom may share some personal information with business partners, who may then use the information to offer products that may interest the user.

Lastly, Noom uses TLS encryption to ensure that user data is safe.

Other Noom Reviews

Does Noom really work? The following articles are from Noom Reviews from 2020 and 2019.

What you need to know about the weight-loss app Noom, according to a dietitian: Review by Samantha Cassetty, RD. The reviewer highlights some benefits, such as the fact that Noom is scientifically validated, and that no foods are off-limits in the Noom diet. However, one major concern is that health coaching is superficial rather than personal. Furthermore, the suggested calories are often too low.

Noom Review: Does It Work for Weight Loss?: Review by Healthline. In this review, the authors gave Noom a score of 3.92/5. 

What Is The Noom Diet—And Can It Help You Lose Weight?. Review by Women’s Health Magazine, written by registered dietitian Nora Minno.

Us Weekly promotes that Noom Can Help You Lose 20 pounds Starting With 1 Simple Step

The Noom Verdict: Not Quite Personalized?

The bottom line of this review is that while Noom is an effective weight loss program, it is not necessarily a personalized nutrition app. As pointed out in a number of reviews, many of the “customized” features are generic. For individuals with underlying or chronic health conditions, it is recommended to pursue a more personalized treatment approach. 

Furthermore, while Noom is an excellent way to build healthy habits, it is only effective for a subset of people. For individuals who are not looking to lose weight, the app may not be necessary. Lastly, for individuals who are genetically predisposed to conditions that are aggravated by extreme caloric restriction, this app may not be helpful. 

Noom does not offer personalized nutrition advice based on health and medical history.  

Review of Noom Pros and Cons


  • An effective weight loss app
  • In one app, users can engage with calorie counting, track exercise, and learn about nutrition
  • Comes with access to personal coaching
  • Backed by science to help you reach your goals


  • The app is not useful for those who don’t want to lose weight
  • Some aspects of the app may be harmful to users who don’t respond well to caloric restriction
  • Does not offer personalized nutrition based on health history and genetics.
  • May share user data with business partners.

Noom vs Weight Watchers (WW)

Noom and WW are both subscription based food tracking programs that claim to help you lose weight and feel good. The best plan for each individual largely depends on personal goals and motivations. While both plans make use of smartphones and other technologies to help you keep track of calories, WW is focused on community building while Noom places more emphasis on individual habit building.

NoomWeight Watchers
Includes trackingYesYes
Community-based support groupsNoYes
Price$59 per month or $199 per year$12 – $64 per month
LoggingFood color categoriesSmartpoints
Fitness Add-onAdd-on

Nebula Genomics: Make Informed Decisions for Your Nutrition

In this final part of our Noom review we take a look at Nebula Genomics.

As we identified before, every individual responds differently to weight, nutritional intake, and food. Consequently, there is no “one size fits all” approach when it comes to nutrition. How food and weight affect our health depends heavily on our genetics.

A weight loss regime that works for one person may be harmful to another. Furthermore, each person may need a different proportion of macronutrients and micronutrients.  

There is a lot of trial and error involved with figuring out what works best for you. Furthermore, diet can change drastically when one becomes aware of their genetic predispositions. With our new 30x Whole Genome Sequencing service, you can sequence 100% of your genome. This includes lifetime access to our genome exploration tools and a collection of research studies that are updated every week.

Already have genome data? No problem. You can easily upload your DNA data from other platforms (such as AncestryDNA and 23andMe) onto our website.

There are a lot of benefits to knowing more about your genome. Since health goes far beyond just weight, knowing more about your nutritional needs is essential to living a healthy life. With your data in your hands, you can make the decisions that work best for you. 


While Noom is a very effective weight loss app, it is not a replacement for personalized nutrition. Weight management is not the only goal when it comes to health, and every individual responds differently to caloric restriction. 

To tackle health in a holistic way, it is important to know your nutritional needs. As an alternative, you can learn more about your dietary needs with our 30x Whole Genome Sequencing service.

In particular, you might be interested in these articles:

  • Contrave (prescription weight loss pills)
  • Elysium Health (supplements designed to slow down aging)
  • Iaso Tea (a tea for cleaning and weight loss)
  • Ka’Chava (meal replacement shake)
  • Psomagen (gut health and gene test)
  • Medishare review (healthcare cost sharing)
  • Optavia (subscription based weight loss programs with personal coaches)
  • Rootine (personalized supplement and vitamins based on DNA test)
  • Thryve (personalized probiotics)
  • Yoga Burn (yoga instuctional videos for weight loss)

Or you could look into supplements that may help you loose weight like Hydroxycut, Leptitox, and Resurge.

If you are interested in genetic testing that will help you achieve your health and fitness goals, there are a lot of products to choose from. You can learn more about your options on our website including:

  • Athletigen (free upload and basic report; additional tests and reports available at an additional cost)
  • CircleDNA ($189 – $629)
  • DNAFit (in partnership with CircleDNA $189 – $629)
  • Fitness Genes ($49 for data upload; up to $199 for DNA testing kits)
  • FoundMyFitness (one-time report for $25 or lifetime updates and other perks ranging from $15 – $250/month)
  • Genomelink ($39 for fitness information)
  • Genopalate ($69 for data upload; $189 for DNA testing kit)
  • Helix DNA ($145 + additional cost for the apps)
  • Living DNA (well-being kits start at $129)
  • Nutrisystem (plans start at $9 per day for men and $8 per day for women)
  • Orig3n ($29 – $150 for various DNA tests)
  • Promethease ($12; for health information)
  • SelfDecode ($59 – $289)
  • (fitness app purchased separately)
  • Vitagene (diet and health, $99)
  • Xcode Life ($20 each for fitness and health report)

Did you like our Noom review? You can find more reviews on our blog and check out our complete guide to the best DNA test kit and other home tests!