How UVB Influences Our Gut and Skin Microbiome

UVB from sunlight plays an important role in modulating the complex bi-directional gut-skin axis and our microbiome Key Points...

Health-Promoting Reactions in the Body Triggered by Exposure to Full-Spectrum Sunlight

Wavelengths of Energy from Sunshine: UVB, UVA, Red, Near Infrared, Far Infrared, and Blue Light from sunshine all have...

A lack of sunshine exposure can lead to decreased health and an increased risk of many diseases, also known...

Learn more about several vitamin D misconceptions; these posts answer a majority of the questions we receive on a...

48 vitamin D researchers agree that vitamin D levels of 40-60 ng/ml (100-150 nmol/L) are safe, inexpensive and lead...

There's no single supplement amount that works for everyone. Testing is important to see if you're within the recommended...

What is your risk of having a vitamin D level below recommended? The Vitamin D Deficiency Risk Assessment Quiz...

GrassrootsHealth has been running the world’s largest population field trial on vitamin D since 2007, and was created to...

Learn more about several vitamin D misconceptions; these posts answer a majority of the questions we receive on a...

Calculate the estimated additional intake required to reach your target vitamin D serum level (scientist panel recommendation of 40-60ng/ml).