The Noom diet plan doesn’t have food exclusions or banned foods. Instead, foods are assigned a color — green, yellow or red — that acts as a portion guide and not an indicator of “good” or “bad” food. Noom green foods: Green foods are the least calorie-dense and have the highest amount of nutrients. Most green foods are vegetables and whole grains, such as spinach, apples, sweet potatoes and brown rice. Noom users can eat green foods in larger quantities. Noom yellow foods: Yellow foods have less healthy nutrients than green foods but can be enjoyed in moderate proportions. Many yellow foods are starches, lean meats and dairy products, including eggs, salmon, and black beans. Noom red foods: Red foods are the highest in calories and have the least healthy nutrients. Most red foods are red meats and dessert dishes, like bacon, popcorn, almonds and ice cream. Red foods aren’t totally off-limits but should be eaten mindfully. When you log your meals or snacks into the Noom app, it automatically sorts the food into one of the three colors so you can monitor the amount of calories you’re eating from each group and visually see where to make improvements.