The One Small Step 5K and walk was held Saturday at Chestnut Ridge Park.

Prader-Willi Syndrome is a disability that leads to insatiable hunger.

Those who are affected lack the trigger telling them their stomachs are full, which can lead to stomach rupture. This predisposes people with the syndrome for obesity.

"It comes to the point that a lot of time people need to have food locked up," said Liz Bystrak, the event's co-coordinator. "They have to have all their calories counted, and access to food closely monitored."

Organizers expect to raise more than thirty-thousand dollars for the cause.