About the Vitamin D Council
The Vitamin D Council was founded in 2003 by John J. Cannell, MD, who observed that many patients in a maximum-security psychiatric hospital were vitamin D deficient. Over time, the Council grew to become a trusted global resource for evidence-based research, education, and guidance about vitamin D’s role in health.
Today, the Vitamin D Council site is powered by yippy®, which is building the world’s largest vitamin D community and knowledge hub. We bring together scientists, health professionals, and everyday readers to explore the latest in vitamin D science, share practical advice, and help clarify confusing or conflicting recommendations.
What We Do
- Provide in-depth, current research on vitamin D and its impact on conditions including immune function, metabolism, mental health, and cancer.
- Publish practical articles and guides based on peer-reviewed science, designed for both public and professional audiences.
- Maintain a transparent, trust-first approach – we cite our sources, reflect diverse expert opinions, and avoid sensational claims.
Our Contributors
- John Cannell, MD is a physician with experience in psychiatry and general practice. He founded the original Vitamin D Council and continues contributing content here, sharing insights drawn from decades of clinical observation and research.
- (more experts coming soon)
