The Ontario Prader-Willi Syndrome Association welcomes you!
Welcome, and thank you for taking the time to visit the Ontario Prader-Willi Syndrome Association (OPWSA) website! We’re a strong community of caregivers, families, doctors, and individuals with Prader-Willi Syndrome (PWS) whose main objective is to support individuals with PWS and their caregivers through resources and education. We strive to ensure that individuals with PWS and their families live happy and meaningful lives with the support of a community behind them.
September 18-19, 2026
Family Support
​OPWSA’s main objective is to empower families, caregivers, and individuals living with PWS. If you or your family are needing support, compassion, or resources, we’re here to provide you with that! Connect with our Executive Director or find a community in our network of supportive families!
Awareness
OPWSA is committed to spreading awareness and education through such things as speaking with educators, advocating, hosting events, fundraisers, online challenges and more. We help people to understand what Prader-Willi syndrome is, the challenges that it can present and how they can help individuals with PWS and their families.
News & Information
Wines Among the Vines
Celebrate 10 years of the OPWSA Wines Among the Vines fundraising event on Saturday, August 15th.
Join us as we celebrate a decade of bringing together supporters, families, and friends in support of individuals living with Prader-Willi Syndrome (PWS). Expect an evening of great wine, delicious food, live entertainment, and wonderful company.
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2026 PWS National Conference
OPWSA and FPWR Canada partnered to host the 2025 PWS National Conference on September 18-19, 2026 at The Kingbridge Centre in King City. Early bird registration has been extended until July 19th!
The conference is comprised of three distinct programs:
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Friday, September 18th
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Professional Providers Day for agency staff, educators and other professionals that support individuals with PWS.
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Saturday, September 19th
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Family Conference for parents and guardians
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Friends and Fun Club for individuals with PWS of all ages and their siblings
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WestJet Hope Takes Flights Sweepstakes
Enter for your chance to win WestJet’s Gift of Flight for two, giving the winner the opportunity to travel to any destination served by WestJet. Whether you’re dreaming of a family getaway, an adventure with a loved one, or simply a chance to explore somewhere new — this is an opportunity you won’t want to miss!
Every ticket purchased helps support the Prader-Willi syndrome (PWS) community.
Red Yellow Green Nutritional Guide
The Red Yellow Green (RYG) system is a simple to understand yet effective way of constructing a nutritional plan to help individuals with PWS. The basic stoplight analogy makes a clear distinction between what is healthy and what is not by putting food into easily understandable categories: foods that can be eaten in abundance, foods to eat in moderation, and foods that should be avoided.