BJ

=What is Prader-Willi Syndrome?= Prader-Willi syndrome is an autosomal disorder, people with the disease have sex glands that don't produce the amount of hormones needed. People with the disease are often obese and their muscles are slow to develop. They can also have reduced mental ability which in some cases leads to a mental handicap. The obesity can be caused by a hunger that is hard to keep up with, a lot of subjects will eat a lot simply because they can't satisfy their cravings like other people.

=**__How Does One Have Prader-Willi Syndrome?__**= Prader-Willi Syndrome is a result of a missing chromosome 15 or a duplicate version. In most cases the victim of this disorder is missing the father's chromosome 15 or in other cases they can have two of the mother's version of chromosome 15. However there is usually no way to tell if a child will have this disorder, it is completely random with family history very rarely being a cause of it -Newborns are often smaller than normal -The genitals of the affected are underdeveloped. -Can have problems swallowing especially when small -Often feel floppy when held due to low muscle development -Their cry is weak and quieter -Facial disorders such as almond shaped eyes and a downturned mouth
 * __What are the Symptoms?__**

=__Statistics and History__= Prader-Willi Syndrome occurs in 1 out of 25,000 births. As for life expectancy, if a healthy diet is kept and the subject's weight is controlled then they can live a normal life. However if a healthy diet is not kept than the victim can die of obesity after lung or heart failure but it's hard to pin point an exact range since the ages of death vary greatly. As of right now there are no known outside factors that contribute to. As of right now there is no cure for Prader-Willi syndrome but as stated previously victims can lead a normal life if treated properly.

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=**__Extra Info__**= Prader-Willi Syndrome was first discovered by doctors A. Prader, H. Willi, and A. Labhart in 1956 in Switzerland, however the genetic disorder itself was discovered until 1981 by graduate student David Ledbetter. Infants often have to be fed through a feeding tube to help gain weight. Behavioral issues is often a common occurrence in kids with these conditions. Often due to the lack of a constant and healthy muscle growth people with Prader-Willi are often short and a large amount are often declared legally midgets.

=**__Resources__**= http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002572/ http://www.medicinenet.com/prader-willi_syndrome/article.htm http://www.brookespublishing.com/store/books/dykens-4714/excerpt.htm (Book Resource Excerpt)

=**__Pictures__**= http://www.google.com/imgres?q=prader+willi+syndrome+symptoms&start=17&num=10&um=1&hl=en&client=safari&rls=en&biw=1024&bih=610&tbm=isch&tbnid=5ODhg_jP1hIqvM:&imgrefurl=http://paulpickek.blogspot.com/2010/05/prader-willi-syndrome-walkathon-in-los.html&docid=QzX76RV-hCIogM&imgurl=http://lh3.google.com/fisherwy/RvGBHjcL19I/AAAAAAAAItI/xMFUxg-ddao/Prader-Willi%25252520Syndrome%25252520baby%25252520boy%2525255B5%2525255D.jpg&w=207&h=213&ei=0Za4TomLCqTO2AXi-8HIBw&zoom=1&iact=hc&vpx=119&vpy=281&dur=269&hovh=170&hovw=165&tx=133&ty=80&sig=107757468139070356183&sqi=2&page=2&tbnh=122&tbnw=123&ndsp=18&ved=1t:429,r:12,s:17

http://diseases2.pbworks.com/w/page/35174693/prader%20willi%20syndrome

http://www.youtube.com/watch?v=VZEHHJQv9A8 (video)