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Do you measure your vitamin D status?

The role vitamin D plays in the immune system response has received much coverage over the last several months. The issue seems more important now with the current coronavirus pandemic, on top of decades...

Sunlight and Health: by Marc Sorenson, EdD

Sunlight and health, from the earliest human civilizations to our current battle with COVID-19, have an inseparable link. Dr. John Fielder’s exceptionally well-written paper, History of Heliotherapy provides insight into the past. Many ancients...

Sunshine Month Flash Sale! Get 20% off test kits and a free eBook! Use code SUNFLASH25. Offer ends Sunday, May 11th, 2025 at 11:59PM PST (Not valid on sale items or the T1D Prevention Test Kit)

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