Nutrition at the Center for Prader-Willi Syndrome

Our clinical dietitians play a vital role in the treatment programs for patients with Prader-Willi Syndrome. Using the innovative Red, Yellow, Green® Weight Control Program developed at The Children’s Institute, our dietitians guide the highly successful weight loss of patients with Prader-Willi syndrome.

What the Red-Yellow-Green® Weight
Control System is All About

Our trademarked weight control system is one that will make the difficult task of losing  weight easier for everyone in the family. Called the “Red-Yellow-Green System,” it is based on a color system that is familiar to everyone — the traffic light. Just as in the traffic light, green means "go," yellow means "caution — be careful, go slow," and red means "stop."


No more counting calories

stoplight system for weight control

Using an individualized daily meal plan and the Red, Yellow, Green® Weight Control Program, calories are controlled by dividing food into low, moderate and high-calorie food groups.   A patient learns to "go" with some foods, "be cautious" with some, and "stop," with others.

  • The Green foods are low in calories, and second servings are permitted.
  • The Yellow foods are high in calories but also are rich in the nutrients needed by the body. These foods are the basic foods for a well-balanced diet, and are included in the daily meal plan in specified amounts.
  • The Red foods are high in calories and have limited nutrient content per calorie. Eating too many of these foods leads to weight gain. The use of the red foods is very limited in the daily meal plan.

Personal copies of the Red, Yellow, Green® book are available for purchase below. To place your order via phone, please contact Kari Chonko at 412-244-3052.

Download printable information here:
PWS Nutrition

Red, Yellow, Green Book Order Form

Menu consultation services

Our dietitians can help you implement this system at your organization. 

For questions or concerns, please contact Gina Salvatori at 412-420-2159 or

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