Maintain your Vitamin D level
between 100 – 150 nmol/L
Vitamin D Health Benefits
Natural Levels of Vitamin D
Key Resources


IOM Vitamin D Intake Recommendation Error Could Have Alzheimer’s Risk Consequences
Mar 26, 2015

Researchers at the UCSD and Creighton University at Omaha, Nebraska say the National Academy of Sciences (NAS) Institute of Medicine (IOM)’s Recommended Dietary Allowance (RDA) for vitamin D intake is miscalculated and underestimated — not by any small measure, but by a whopping factor of ten.

In a letter published this month in the journal Nutrients, the scientists explain that they’ve confirmed a calculation error in the IOS metrics that has been previously noted by other investigators, by factoring is a data set pertaining to a different population.

In 2014, University of Alberta School of Public Health statisticians, Professor Paul Veugelers PDF, PhD, MSc and John Paul Ekwaru, published an Open Access paper entitled “A Statistical Error in the Estimation of the Recommended Dietary Allowance for Vitamin D” (Published: 20 October 2014 Nutrients 2014, 6(10), 4472-4475; doi:10.3390/nu6104472) in the online journal Nutrients showing that the Institute of Medicine (IOM) had made a major calculation error in its recommended dietary allowance (RDA) for vitamin D.

Dr. Cedric F. Garland, Dr.P.H, an adjunct professor at UC San Diego’s Department of Family Medicine and Public Health says his team was able to confirm findings last year reported by Dr. Paul Veugelers in Nutrients last October.

full story . . .
Vitamin D Project Aims to Improve Birth Outcomes in Charleston and Columbia
Mar 25, 2015
Vitamin D testing, monitoring and supplements to be available to pregnant women at no cost
Charleston, S.C. — GrassrootsHealth, an international nonprofit public health promotion organization, will launch its Protect Our Children (POC) NOW! vitamin D demonstration project April 7 in the Charleston area at the Medical University of South Carolina (MUSC), and will soon follow with a second phase in Columbia. POC will be available at no cost to a minimum of 500 pregnant women at 17 weeks or less gestation who live within these two service areas. The project will include patient and health care provider education, screening and vitamin D supplements.
“We’re very excited to launch Protect Our Children NOW! in South Carolina,” said Carole Baggerly, founder and director of GrassrootsHealth. “This is a wonderful opportunity to trumpet the importance of vitamin D to pregnant mothers and physicians. We aim to reduce the incidence of preterm births, as well as positively influence the health of pregnant moms and lower the prevalence of early childhood diseases associated with vitamin D deficiency.”
full story . . .
Vitamin D vital for gene expression in developing brains
Mar 24, 2015

Vitamin D deficiency in mothers leading up to and during pregnancy has fundamental consequences for their offspring's brain development, researchers from University of Western Australia and the Telethon Kids Institute have confirmed.

The collaborative study used a mouse model to investigate prenatal D deficiency.

The researchers found that body length, head size and lateral ventricle volume were reduced in the offspring of vitamin D deficient individuals and most importantly, gene expression in the brain was significantly altered.

Female BALB/c mice (albino inbred laboratory strain mice; Mus musculus ) were placed on either a vitamin D controlled diet or a vitamin D devoid diet, five weeks prior to and during pregnancy.

Foetal brains were analysed for morphology and gene expression at 14.5 days and 17.5 days of embryonic development.

"Day 14.5 is about two-thirds of the way through a mouse pregnancy, the foundation of the brain has been laid down, but there is still a lot of development to do and day 17.5 is just before birth," UWA School of Anatomy Physiology and Human Biology researcher Dr Caitlin Wyrwoll says.

"This gives us a maturational read out of the brain."

full story . . .
Vitamin D prevents diabetes and clogged arteries in mice
Mar 23, 2015

In recent years, a deficiency of vitamin D has been linked to type 2 diabetes and heart disease, two illnesses that commonly occur together and are the most common cause of illness and death in Western countries.

Both disorders are rooted in chronic inflammation, which leads to insulin resistance and the buildup of artery-clogging plaque. Robert Boston Washington University diabetes researcher Carlos Bernal-Mizrachi, MD, shown with a mouse that lacks the ability to process vitamin D in key immune cells. Without adequate vitamin D in those cells, the animals developed diabetes and atherosclerosis.

Now, new research in mice at Washington University School of Medicine in St. Louis suggests vitamin D plays a major role in preventing the inflammation that leads to type 2 diabetes and atherosclerosis. Further, the way key immune cells behave without adequate vitamin D may provide scientists with new therapeutic targets for patients with those disorders.

The study appears March 19 in the journal Cell Reports.

full story . . .
Vitamin D may keep low-grade prostate cancer from becoming aggressive
Mar 23, 2015

DENVER, March 22, 2015 -- Taking vitamin D supplements could slow or even reverse the progression of less aggressive, or low-grade, prostate tumors without the need for surgery or radiation, a scientist will report today.

His team will describe the approach in one of nearly 11,000 presentations at the 249th National Meeting & Exposition of the American Chemical Society (ACS), the world's largest scientific society. The meeting is being held here through Thursday.

If a tumor is present in a prostate biopsy, a pathologist grades its aggressiveness on a scale known as the Gleason Grading System. Tumors with Gleason scores of 7 and above are considered aggressive and likely to spread, requiring surgical removal of the prostate gland (prostatectomy) or radiation therapy. In contrast, prostate tumors with Gleason scores of 6 and below are less aggressive, and in some cases may cause no symptoms or health problems for the duration of the man's life.

full story . . .
Low vitamin D levels and depression linked in young women, study shows
Mar 18, 2015

A new study from Oregon State University suggests there is a relationship between low levels of vitamin D and depression in otherwise healthy young women.

OSU researchers found that young women with lower levels of vitamin D were more likely to have clinically significant depressive symptoms over the course of a five-week study, lead author David Kerr said. The results were consistent even when researchers took into account other possible explanations, such as time of year, exercise and time spent outside.

"Depression has multiple, powerful causes and if vitamin D is part of the picture, it is just a small part," said Kerr, an associate professor in the School of Psychological Science at OSU. "But given how many people are affected by , any little inroad we can find could have an important impact on public health."

full story . . .
Vitamin D for Public Health
Dec 09, 2014        8:00 am

Integrating Sunshine, Supplements and Measurement for Optimal Health

This seminar, presented by UC San Diego School of Medicine and GrassrootsHealth, has been developed as an educational opportunity to present and discuss the science of vitamin D and sunshine. The objective of the meeting is to leave with an implementation plan for your group – using vitamin D and sunshine to optimize health.

We’re looking forward to seeing you there!

Cedric F. Garland, Dr. P.H.                                          Carole Baggerly
University of California, San Diego                             Director, GrassrootsHealth

event details
18th Vitamin D Workshop April 21-24, 2015
Apr 21, 2015        8:00 am

On behalf of the Workshop Executive Committee, you are

cordially invited to attend the 18th Vitamin D Workshop in

Delft, the Netherlands, April 21-24, 2015. The Vitamin D

Workshop features overviews and original reports on basic,

epidemiological and clinical research, oral as well as poster


event details

Susan Rex Ryan
Defend Your Life

Defend Your Life has three main sections. The first addresses the fundamentals of vitamin D3 and its awesome benefits as well as minimal risk. The second highlights select diseases and conditions about which vitamin D3 may offer protection. The third includes the author's personal vitamin D3 story, including her theory about adequate vitamin D3 levels and how you can 'Defend Your Life'.

Reading this book will help you understand how adequate amounts of vitamin D3 are essential to enhancing your quality of life.

Ian Wishart
Vitamin D: Is This the Miracle Vitamin?

In this compelling new book,award-winning investigative journalist and bestselling author Ian Wishart brings together the most up to date science on vitamin D and how it could well save your life. Cancer? Up to a 77% reduction in risk of developing it if you take this vitamin. Heart disease? The same kind of reduction. Did you know that autism, mental illness and multiple sclerosis all appear to be caused by a lack of vitamin D during pregnancy?

The lives of every single person, including you, will be affected by the information in this book. With more than 300 scientific trials and studies cited, this book is a reference guide not just for the general reader but for medical professionals alike.

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Spring Sunshine Welcomed as Canadians Vitamin D Levels Plummet

Risk increased for a number of serious diseases

WOODSTOCK, Ont. (March 19, 2015) – A new Statistics Canada report has confirmed that 12 million Canadians have vitamin D blood levels that are below what Health Canada recommends and vitamin D levels continue to drop from previous years.

Results from the 2012 to 2013 Canadian Health Measures Survey (CHMS), released December 2014, report that 35% or 12 million Canadians have vitamin D blood levels below the Health Canada guideline of 50 nmol/L. This has increased by 3% from the previous Statistics Canada report (2009-2011) of 32%. The mean average vitamin D level for Canadians age 6-79 years has also dropped by 9.9% over the last 4 years from 68 nmol/L to 61 nmol/L. “This downward trend in vitamin D blood levels is putting more Canadians at a higher risk for many cancers including colon, breast and prostate, as well as for cardiovascular disease, diabetes, multiple sclerosis, osteoporosis and other serious diseases” stated Perry Holman, Executive Director of the Vitamin D Society.

full press release

Building consensus on optimal vitamin D levels in Canada

Key disease organizations support effort to curb vitamin D deficiency

TORONTO, Ont. (November 21, 2014) - A push to develop a Canadian Vitamin D Consesus that can be used to educate Canadians on the importance of optimal vitamin D levels for health is gaining support.

Vitamin D experts from around the world attended a workshop in Toronto earlier this month with the goal of reducing vitamin D deficiency in Canada.

A number of prominent Canadian disease organizations, including the Multiple Sclerosis Society of Canada, Osteoporosis Canada, the Canadan Breast Cancer Foundation and Prostate Cancer Canada attended the November 4 workshop on vitamin D.

"It's extemely encouraging to see momentum building behind efforts to improve education among Canadians on how to ensure they are getting enough vitamin D. Together, we can help people improve their health and reduce risk to several serious diseases," said workshop chairperson Dr. Reinhold Vieth, retired director of the Bone and Mineral Laboratory at Mount Sinai Hospital and a professor at the University of Toronto in the Department of Laboratory Medicine and Pathobiolgy.


full press release

Shining a light on need to boost vitamin D levels in Canada

Vitamin D Society workshop on Nov. 4 to build consensus on curbing vitamin D deficiency

TORONTO, Ont. (October 31, 2014) – As winter draws closer and our daylight hours grow shorter, Canadians are being urged to take steps to protect their health by maintaining sufficient levels of vitamin D.

To mark Vitamin D Awareness Month in November, The Vitamin D Society is spreading the word about the importance of proper vitamin D levels and the affect it has on our everyday health.

On Tuesday, November 4 in Toronto the non-profit organization is hosting the Vitamin D Consensus Workshop, featuring several international medical experts. Representatives from key disease organizations have been invited to attend to help develop a Canadian Vitamin D Consensus that can be used to educate Canadians on the importance of optimal vitamin D levels for health. The workshop comes shortly after World Vitamin D Day on November 2.

“Due to Canada’s northern latitude, Canadians cannot get sufficient levels of vitamin D through sunshine from November to May,” said workshop presenter Dr. Reinhold Vieth, retired director of the Bone and Mineral Laboratory at Mount Sinai Hospital and a professor at the University of Toronto in the Department of Laboratory Medicine and Pathobiology. “Low levels of vitamin D can create a higher risk of serious diseases, such as cancer, cardiovascular disease, diabetes, multiple sclerosis, osteoporosis and others.”

full press release
Dr. Reinhold Vieth

Clinical Biochemist at Mount Sinai Hospital and Professor - University of Toronto, Departments of Nutritional Sciences and Laboratory Medicine and Pathobiology.

Click to View Carole Baggerly

"Director, GrassrootsHealth, a Public Health Promotion Organization
leading D*action, the world's largest ongoing vitamin D intervention


Click to View Dr. John Cannell M.D.

Executive Director‚ The Vitamin D Council
San Luis Obispo, CA, USA

 more advisors...

Converter Tool

In Canada Vitamin D 25(OH)D levels are measured in nmol/L. In the U.S. it is measured as ng/ml. To convert:

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