Does vitamin D supplementation increase kidney stone risk?

March is National Kidney Month and today, March 12, is World Kidney Day. In recognition, today’s blog focuses on a GrassrootsHealth analysis investigating whether there is an association between vitamin D levels and kidney...

Could Periodic Doses of 60,000 IU Vitamin D to New Breastfeeding Mothers Help Prevent Vitamin D Deficiency in Both Mothers & Infants?

In response to an upcoming publication by Trivedi et al., Dr. Carol Wagner, a member of the GrassrootsHealth Scientist Panel, writes a compelling summary of the current status of vitamin D deficiency among new...

Are both supplemental magnesium and vitamin K2 combined important for vitamin D levels?

Key Points Using the data provided for the GrassrootsHealth study from almost 3,000 participants with supplemental magnesium and vitamin K2 information, we plotted every participant’s supplemental vitamin D intake (dose) and blood level (response)...

Could ADHD Symptoms Improve with Vitamin D and Magnesium?

Attention Deficit Hyperactivity Disorder (ADHD) is now said to affect almost 1 out of every 10 children in the United States, according to the CDC. Its main symptoms include inattention, hyperactivity, and impulsivity. On...

As Children and Teens Age, Vitamin D Levels Decrease

Our last post covered a story about one of our employees whose 12 year old son recently had a vitamin D level of 18 ng/ml (what a surprise!); we also briefly looked at vitamin...

Test Your Children and Teens! Here’s why, with a personal story…

We love what we do at GrassrootsHealth. Our passion about nutrition and vitamin D shows in our work as well as our personal lives. Today, we would like to share a preview to a...

Are Digestive Problems Affecting Your Vitamin D?

For some people, swallowing a daily pill is not an option, nor is it preferred, which can result in low compliance in taking supplements. While vitamin D supplements come in several other forms, such...

Is supplemental vitamin C important for vitamin D levels?

In a previous blog we showed how much supplemental vitamin C GrassrootsHealth participants report taking. In today’s blog we will investigate whether supplemental vitamin C intake affects vitamin D levels. Using the data provided...

What if you don’t take vitamin D supplements?

In our last post, we revisited the topic of vitamin D in our food. For most people, what we eat simply does not provide us with the amount of vitamin D our bodies need....

Can we get enough vitamin D through food?

The National Institutes of Health (NIH) recommends 600 IU/day of vitamin D for anyone 1-70 years old and 800 IU/day for those over 70. However, this recommendation is based on maintaining bone health with...