• (760) 579-8141
  D*action

Learn your Vitamin D blood level and get feedback on your health outcomes.

  D*action+Omega-3

Learn your vitamin D blood level and Omega-3 Index and get feedback on your health outcomes.

  D*action Pregnancy

Learn and monitor your Vitamin D serum level throughout your pregnancy!

  D*action

Learn your Vitamin D blood level and get feedback on your health outcomes.

  D*action+Omega-3

Learn your vitamin D blood level and Omega-3 Index and get feedback on your health outcomes.

  D*action Pregnancy

Learn and monitor your Vitamin D serum level throughout your pregnancy!

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Cancer

Can Vitamin D Help Prevent Lung Cancer?

In April 2016 GrassrootsHealth published a paper on vitamin D levels and all non-skin cancers. This paper used data from two...

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Does Vitamin D Help Survival Rates for Lymphoma?

A group of researchers studied 658 Norwegian patients diagnosed between 1984 and 2004 with either breast cancer, colon cancer,...

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Does Vitamin D Help Survival Rates for Colon Cancer?

A group of researchers studied 658 Norwegian patients diagnosed between 1984 and 2004 with either breast cancer, colon cancer,...

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Does Vitamin D Help Survival Rates for Lung Cancer?

A group of researchers studied 658 Norwegian patients diagnosed between 1984 and 2004 with either breast cancer, colon cancer,...

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Does Vitamin D Help Survival Rates for Breast Cancer?

A group of researchers studied 658 Norwegian patients diagnosed between 1984 and 2004 with either breast cancer, colon cancer,...

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Does vitamin D prevent cancer? Chart from 2017 Research Paper

Vitamin D and Cancer Risk Below is a chart from recent research on vitamin D and cancer. What is your...

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Vitamin D Intake & Toxicity

Is your doctor telling you that you are taking too much vitamin D? The chart below, based on a review...

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Decrease Your Risk of Breast Cancer with Omega-3s

The paper from Zheng et al., a meta-analysis of 21 studies on omega-3s and risk of  breast cancer, concludes...

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1.4 MB

65% Lower Cancer Risk Paper

The objective of this analysis was to investigate whether the previously reported inverse association between 25(OH)D and cancer risk...

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650 KB

Cancer Prevention with Vitamin D

The Vitamin D Deficiency Epidemic 40-75% of the entire world’s population is vitamin D deficient. The causal link between...

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Document Topics

Bone Health Breast Cancer Cancer Children Cold & Flu Community Health D for Health Diabetes Feature GrassrootsHealth Publications Harness the Sun Heart Health Medical Office Downloads Nutrition & Supplements Omega-3 Posters Pregnancy, Breastfeeding & Babies Prevention Research Skin Cancer Sun Exposure Testing

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Suite U-87
Encinitas, CA 92024

Phone: (760) 579-8141

Email: customer service

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Tools

D*Calculator
Calculate your estimated additional D intake to reach your target vitamin D serum level. (40-60 ng/ml recommended by our scientist panel).

Serum Level Converter
Convert blood serum level 25(OH)D Unit between ng/mL and nmol/L.

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