Noom’s system is based on four main pillars:

1. 1. Behavioral psychology:
      Noom is based on cognitive behavioral therapy (CBT). Users read short daily lessons on topics such as willpower, stress eating, and habit loops. These are designed to help them rethink automatic behaviors and emotional eating patterns.

   2. Food Tracking:
      Like most diet apps, Noom uses a food tracking feature. However, instead of labeling foods as “good” or “bad,” it uses a color-coded system:

      • Green foods: Low-calorie, nutrient-dense options (like fruits and vegetables).

      • Yellow foods: Moderately high in calories, to be consumed mindfully (like grains and lean meats).

      • Red foods: High-calorie foods that should be eaten in smaller portions (like sweets or fried foods).

      This simple visual approach helps people make better choices without feeling overly restricted.

   3. Coaching and Support:
      Each user is assigned a goal coach who encourages them, answers questions, and provides accountability. While not the same as a nutritionist, coaching adds a human element that engages and motivates users.
   4. Progress tracking:
      Noom helps you weigh yourself daily, count your steps, and track your progress. This continuous monitoring helps you keep track of your habits and celebrate small successes.