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.
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
PWS National Conference
OPWSA and FPWR Canada are partnering to host the 2025 PWS National Conference on Saturday, October 25, 2025 at The Kingbridge Centre in King City.
The conference will be comprised of three distinct programs:
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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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Professional Providers Day for agency staff, educators and other professionals that support individuals with PWS
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.