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About Riley Peterson & John Cannell, MD.

Riley is the Community Coordinator of the Vitamin D Council. She is responsible for customer’s concerns, managing social media, and overseeing test kit production. She is attending California Polytechnic State University San Luis Obispo with a major in nutrition. Riley is passionate about health and fitness, and spends a lot of her time outside in the sun staying active with friends and family. She loves her work at the Vitamin D Council as it enables her to spread awareness on health and wellness in her community.

Author Archives: Riley Peterson & John Cannell, MD.

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Vitamin D protects against colorectal cancer

A new meta-analysis of 17 studies found vitamin D levels < 40 ng/ml was associated with an increased risk for colorectal cancer.

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