GrassrootsHealth Employee Directory

Wellness and Fitness ServicesCalifornia, United States2-10 Employees

GrassrootsHealth is a nonprofit public health research organization based in Encinitas, California. It focuses on promoting optimal health worldwide with a primary emphasis on vitamin D, combining research, education, and advocacy. The organization uses evidence-based education and resources and relies on a citizen-science model to involve participants in research and to help providers move findings into practice. It has grown into the world's largest population field trial on vitamin D, with thousands of participants serving as citizen scientists.

Through its D*action research project, participants measure their vitamin D levels and access tools to track and maintain healthy ranges, while education supports informed health decisions. A recent development is a 2025 partnership with the Helen Knoll Foundation to combat vitamin D deficiency.

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