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...
Non-melanoma skin cancers have been linked to solar ultraviolet radiation exposure (UVR), which can lead to a decreased immune response in the skin cells called photoimmunosuppression. A healthy immune response is necessary for cancer...
Inflammatory bowel disease (IBD) is an autoimmune disease causing chronic inflammation in the digestive tract. IBD is rare in children, but rates have been increasing over time. Rates of pediatric IBD are higher in...
Postpartum depression has been associated with delays in infant motor development, which may be due, in part, to the increased cortisol levels in depressive mothers. Low vitamin D status has also been linked to...
Expertscape’s algorithms have placed two GrassrootsHealth Scientist Panel members, Dr. Michael Holick and Dr. William B Grant, in the top 0.1% of scholars writing about Sunlight over the past 10 years. This has earned...
The sun is essential to optimal health and well-being. Sensible sun exposure could greatly improve health by improving vitamin D status for disease reduction, initiating the release of nitric oxide for heart health, stimulating...
Sunlight and supplements are well known sources of vitamin D, but other sources of UV light, such as indoor tanning, can also effectively raise vitamin D levels. In addition to sun exposure habits, we...
The GrassrootsHealth panel of expert scientists’ recommended range of vitamin D levels for general health is 40-60 ng/ml (100-150 nmol/L). This is based on overwhelming evidence about the association between vitamin D and many...
One of the key factors in personalizing your sun exposure is knowing the UV Index in your area so that you don’t burn. The UV Index is a measurement of the strength of the...
Sunshine is important for health, but before you soak up the sun’s rays it’s important to assess your situation so that you don’t burn. Sun exposure needs to be individualized according to skin type,...