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


Can a super-dose of vitamin D cut hospital stays?
May 27, 2015

Very high doses of vitamin D may help critically ill patients with respiratory failure leave the hospital sooner, a small study suggests.

Vitamin D is thought to increase the ability of immune cells to fight infection—but hospitalized patients often have insufficient levels of it because of their lack of exercise and exposure to the sun.

For the study, 31 patients were divided into three groups. Two of the groups received high doses of vitamin D3 (a total of 250,000 or 500,000 international units over five days), and one received a placebo.

full story . . .
Vitamin Determination: An oilman becomes a health care renegade
May 26, 2015

Allan Markin is one of Alberta’s richest men—and a crusader to get Canadians to take more vitamin D. Misguided eccentric, or visionary?

May 26, 2015

Allan Markin, a retired oil patch executive and one of Alberta’s most prominent philanthropists, shines a flashlight into Jean Pronovost’s mouth. The two men are at a clinic operating out of a former Quality Inn on Calgary’s Macleod Trail that is run by Pure North S’Energy Foundation, which Markin funds.

Minutes earlier Markin and Pronovost had struck up a conversation and found they both had more than a passing interest in hockey. Over the course of two decades, starting in the 1960s, Pronovost had played for the Pittsburgh Penguins, the Washington Capitals, and the Flames (when they were in Atlanta) while Markin remains part-owner of the Calgary Flames. It was after a brief conversation about Pronovost’s career that Markin asks to look into the hockey veteran’s gullet. “No, no, no. Those have got to come out. Immediately,” the former chairman of Canadian Natural Resources says.

full story . . .
Vit D Blog: Low Levels For Pregnant Women in Mediterranean
May 21, 2015

Many women don't get enough solar vitamin D despite sunny climate

Those living in northern climes aren't the only ones who may find it difficult to get enough vitamin D from the sun, says a new study: Pregnant women in the Mediterranean also belong on that list.

Given that the Mediterranean is famously sunny, this is a bit surprising. But when researchers looked at 15 studies of the vitamin D levels of pregnant women from the region, including Spain, Italy, Greece, and Turkey, they found that about 90% of them had vitamin D levels that were lower than normal.

full story . . .
Vitamin D levels predict survival chances for sick cats, study finds
May 13, 2015

Cats may hold vital clues about the health benefits of vitamin D, a study suggests.

Researchers found that of D are linked to better survival chances for hospitalised pet cats.

Cats could prove useful for investigating the complex link between vitamin D and a range of that also affect people, the researchers say.

The findings may also help vets to give owners better advice about their pets' prognosis, according to researchers at the University of Edinburgh's Royal (Dick) School of Veterinary Studies.

Researchers examined blood samples from 99 pet cats that were admitted to the University's Small Animal Hospital with life-threatening conditions.

With the owners' permission, the team checked the levels of vitamin D in the cats' blood on admission.

full story . . .
New study. Vitamin D exposure and MS risk- timing seems to matter
May 08, 2015

Researchers at The National Multiple Sclerosis Competence Centre published an article about the timing of vitamin D exposure and MS risk in May 2015 in Multiple Sclerosis Journal.

Background: Low vitamin D levels have been associated with an increased risk of multiple sclerosis, although it remains unknown whether this relationship varies by age.
Objective: To investigate the association between vitamin D3 supplementation through cod liver oil at different postnatal ages and MS risk.

full story . . .
Mobile tracking application may help users meet vitamin D requirements
May 07, 2015

New study in Journal of Nutrition Education and Behavior validates use of the Vitamin D Calculator app for tracking intake

PHILADELPHIA, PA, May 7, 2015 - Vitamin D is essential for the maintenance of bone health and may be implicated in other chronic diseases, as well as immunity, but adults in Canada are consistently deficient in dietary vitamin D, by nearly 400 international units per day (IU/d) on average. Coupled with low vitamin D synthesis from the sun during fall and winter at Canadian latitudes, tracking intake of vitamin D is vital for those lacking the nutrient. In an article in the Journal of Nutrition Education and Behavior, a group from the University of Guelph examined the validity of a mobile application for tracking vitamin D and calcium intake.

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.

 more books...


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:

Enter nmol/L: ng/ml
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