Prader-Willi Syndrome or PWS, is a genetic condition that affects children. It is the most common genetic cause of life-threatening obesity. The exact cause is quite complex, but in simple terms, it is an abnormality in the 15th chromosome that causes the disease. Children with PWS usually have very poor muscle tone. In addition to this, they have incomplete sexual … [Read more...] about What is Prader-Willi Syndrome?