Noom Diet Review 2026: Does It Work for Weight Loss? Cost, Pros & Cons

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What is Noom?

Noom is a popular weight loss app that uses behavioral psychology to help users change their eating habits. Unlike traditional diets that tell you what to eat, Noom focuses on why you eat — using cognitive behavioral therapy (CBT) techniques to address the psychological roots of overeating.

Launched in 2008, Noom has been downloaded by over 50 million people and was ranked the #1 weight loss app by Consumer Reports. But does it actually work, and how does it compare to medical weight loss treatments?

How Noom works

1. Calorie tracking

Noom assigns you a daily calorie budget based on your weight, height, age, and goals. You log your food using their database of over 3.7 million foods. The app tracks your intake in real time, showing how many calories you have left for the day.

2. Food color-coding system

Noom categorizes foods by calorie density:

• Green foods (eat more): Vegetables, fruits, whole grains, lean protein — low calorie density
• Yellow foods (eat moderately): Lean meats, dairy, beans, pasta — moderate calorie density
• Orange foods (eat less): Red meat, full-fat dairy, nuts, oils, sweets — high calorie density

This system teaches you to prefer low-calorie-density foods that fill you up on fewer calories. Read our Weight Loss Foods Guide.

3. Daily psychology lessons

Each day, Noom presents short (5-10 minute) interactive lessons based on cognitive behavioral therapy. Topics include:

• Identifying emotional eating triggers
• Reframing negative thoughts about food
• Building sustainable habits
• Managing stress without food
• Overcoming all-or-nothing thinking
• Planning for high-risk situations

4. Personal coach and group support

Noom assigns you a coach (often AI-assisted with human oversight) who checks in via messaging. You are also placed in a virtual group with other users for peer support and accountability.

5. Step tracking and exercise logging

Noom integrates with your phone's step counter and allows you to log exercise. It sets daily step goals that gradually increase over time. Read our Walking Guide.

Noom effectiveness: what the research shows

• 2016 study (Scientific Reports): 77% of Noom users lost weight over 6 months, averaging 5-7% of body weight.
• 2019 study (JMIR): Users who completed more lessons lost more weight, showing engagement matters.
• 2020 meta-analysis: App-based weight loss programs like Noom produce 3-5% weight loss on average.
• 2022 study: Noom users who tracked food consistently lost 2x more than inconsistent trackers.

The verdict: Noom produces 5-7% weight loss over 6 months for engaged users. This is meaningful but modest compared to GLP-1 medications.

Noom cost

• Monthly: $60-70/month
• 2-month plan: $100-120 ($50-60/month)
• 4-month plan: $130-170 ($32-42/month)
• Annual plan: $209-399 ($17-33/month)
• Free trial: Usually 7-14 days

Noom is cheaper than GLP-1 medications but also far less effective. Read our Best Weight Loss Programs Guide.

Noom pros and cons

Pros

• Behavioral psychology approach addresses root causes of overeating
• Easy-to-use app with large food database
• Flexible — no foods are completely banned
• Educational daily lessons build long-term habits
• More affordable than medical treatments
• Convenient — everything on your phone
• Group support provides accountability

Cons

• Modest weight loss: 5-7% vs 15-22% with GLP-1 medications
• No medication: Does not address biological drivers of weight gain
• Requires daily engagement: Must log food and complete lessons
• Coach quality varies: Some coaches are AI-assisted, not licensed professionals
• Can trigger disordered eating: Calorie tracking may be harmful for some
• Color system is simplistic: Nuts and olive oil are "orange" despite being healthy
• No medical supervision: Not suitable for people with medical conditions
• High monthly cost: $60-70/month is expensive for an app

Noom vs. GLP-1 medications

• Noom: 5-7% weight loss, $60-70/month, app only, no medication
• GLP-1 medications: 15-22% weight loss, $150-400/month, FDA-approved, medical supervision
• Noom + GLP-1: Best of both — behavioral support + medical treatment

GLP-1 medications produce 3-4 times more weight loss than Noom alone. However, Noom's behavioral approach complements GLP-1 treatment well — the medication handles the biological side while Noom handles the psychological side.

Noom vs. other weight loss apps

• Noom: Psychology-based, $60-70/month, 5-7% weight loss
• MyFitnessPal: Calorie tracking only, $20/month premium, no behavioral component
• Lose It: Calorie tracking, $40/year premium, simple interface
• Cronometer: Detailed nutrient tracking, $10/month, best for micronutrients
• Weight Watchers: Points system + meetings, $23-43/month — read our Programs Guide

Who is Noom best for?

• People who want to understand their eating behaviors
• Those who need accountability and daily structure
• People with 10-30 pounds to lose (not significant obesity)
• Those who prefer an app over medical treatment
• People who want to build long-term eating habits
• Those willing to log food daily

Who should skip Noom?

• People with BMI 30+ (GLP-1 medications are more effective)
• Those with significant weight to lose (50+ pounds)
• People with insulin resistance or metabolic syndrome
• Those who have tried and failed app-based programs before
• People with a history of disordered eating
• Those who want medical supervision

How to maximize Noom results

1. Complete daily lessons: Users who complete more lessons lose more weight
2. Log every meal: Consistent tracking doubles weight loss
3. Hit step goals: Walking 10,000+ steps adds 300-500 cal/day burn
4. Engage with your coach: Ask questions and share struggles
5. Focus on green foods: Fill up on vegetables, fruits, and lean protein
6. Combine with a calorie deficit: Use our Calorie Deficit Calculator
7. Add strength training: Read our Exercise Guide
8. Consider GLP-1 medication: For 3-4x more weight loss

The bottom line

Noom is a well-designed weight loss app that uses behavioral psychology to help users lose 5-7% of body weight over 6 months. It is best for people who need behavioral support, accountability, and habit building. However, it produces 3-4 times less weight loss than GLP-1 medications (15-22%), which address the biological drivers of weight gain. For maximum results, combine Noom's behavioral approach with GLP-1 medication — the most powerful combination of psychological and biological weight loss support available. Check your eligibility for GLP-1 treatment and read our Best Programs Guide.