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A rare disease that causes insatiable hunger

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Nutrition label

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Prader-Willi syndrome affects an estimated 1 in 30,000 to 1 in 10,000 people worldwide.

Most cases of the syndrome occur sporadically, meaning the genetic changes behind the condition appear randomly in early development.

The syndrome occurs when specific genes on chromosome 15 lose their function, either because they are missing or because they've been turned off.

Growth hormone therapy was approved as a Prader-Willi syndrome treatment by the FDA in 2000 .

It's been shown to help boost muscle tone and growth while lowering body fat.

Physical, behavioral, occupational and speech therapies can help with motor skills, intellectual disabilities and speech and language development.

Medications might be recommended to help with sleep issues or psychiatric disorders associated with the syndrome.