t is essential that food intake is controlled. Also, they will have to maintain good exercising habits, at least 30 minutes each day. This will not prevent them from being overweight, because of the body composition in PWS: muscles are small, muscle tone is low and the activity level is usually below normal. This also means, that people with PWS have a lower need for calories. A normal person needs the average 2000 calories a day, but someone with PWS only needs about 1000-1250 . I believe that PWS is a very serious disorder that needs to be handled correctly and given a lot of care. If you need any more information or help with your PWS child, please feel free to contact Prader-Willi Syndrome Association (USA) toll free at 1-800-926-4797. Sincerely,...