A young girl with PWS wearing bunny ears headband, a pink shirt and pink pants, sitting on the floor and reading a book, smiling and looking to the side.

What is Prader-Willi Syndrome? 


PWS is a randomly caused genetic disorder (due, essentially, to missing genes on the 15th chromosome) that is the leading genetic cause of obesity in children, affecting 1 in every 12,000 to 15,000 live births. 

PWS can result in: 

  • learning disabilities 

  • behavior problems 

  • insatiable hunger (due to a lack of correct messages being sent to the brain) 

  • very low metabolism 

  • short stature 

  • low muscle tone 

Learn more - PWSA USA
Learn more - PWSA USA