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More to Health than Vitamin D

In working with participants from around the world, tracking their health and their vitamin D intake and levels, we have been able to report several positive health outcomes and benefits of having a vitamin...

Is Your Vitamin D Level Too High?

We sometimes receive questions from participants about whether a vitamin D test result is too high if it came back higher than the recommended range of 40-60 ng/ml. In this blog we will explore...

Evidence on Omega-3s and Depression

Major Depressive Disorder (MDD) is a serious mental health issue that affects an estimated 7% of American adults every year, and it is a leading cause of disability world-wide. Previously, we have discussed the...

Where are GrassrootsHealth participants located?

More than 13,000 people worldwide have participated in the GrassrootsHealth study! In this blog series we will be taking a look at the characteristics of the GrassrootsHealth participants. Where are the GrassrootsHealth participants located?...

Can Vitamin D3 come from Plants?

Most of the vitamin D we have in our bodies is in the form of vitamin D3, which is synthesized in the skin upon exposure to sunlight and other forms of UVB radiation. Additional...

Tanning as a Source of Vitamin D

Two different research groups conclude the US RDA is off by an order of magnitude GrassrootsHealth scientists and staff have published a research letter, citing the D*action data, calling for the Institute of Medicine...

Vitamin D Testing Reduces Healthcare Costs

Researchers in Tennessee believed that vitamin D deficiency could lead to chronic ailments, which in turn increases health care costs. The Veterans Administration is interested not only in the health of their veterans, but...