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The Ontario Prader-Willi Syndrome Association welcomes you!

We are a community of families, caregivers, medical researchers, and educators who live with and support those with Prader-Willi Syndrome.  


This is a community full of love, hard-earned knowledge, medical and scientific expertise, and a deep commitment to better the lives of those we care for.  


We work closely with the Foundation for Prader-Willi Research Canada, and with organizations across Canada and the world.  


Through our Executive Director, a network of family-to-family support and communication as well as facilitating opportunities to get together, our goal is to create rich, healthy, and meaningful lives for people with Prader-Willi Syndrome.

Family support is what the OPWSA does, whether through our Family Support Coordinator or our network of supportive families we will welcome you into our community and provide you with the support you need.

The OPWSA hosts and partcipates in many events and gatherings through out the year. Click below to see what our gatherings are about and a list of what is happening in Ontario.

The RYG system is a concrete dietary approach which groups foods based on the colours of the traffic light.  Red foods are “stop foods”they contain too many calories, sugar and fats and little nutrients. Yellow foods are moderate in calories, required daily to meet nutritional needs. 

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