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


Vitamin D Deficiency Ups Attack Risk in Asthmatics
Oct 29, 2014

Asthma, which inflames and narrows the airways, has become more common in recent years. While there is no known cure, asthma can be managed with medication and by avoiding allergens and other triggers. A new study by a Tel Aviv University researcher points to a convenient, free way to manage acute asthmatic episodes— catching some rays outside.

According to a paper recently published in the journal Allergy, measuring and, if need be, boosting vitamin D levels could help manage asthma attacks. The research, conducted by Dr. Ronit Confino-Cohen of TAU's Sackler Faculty of Medicine, Meir Medical Center, and the Clalit Research Institute, and Dr. Becca Feldman of the Clalit Research Institute drew on the records of millions of patients and used physician diagnoses, rather than self-reports, for evidence of asthma episodes.
full story . . .
CU Cancer Center Study Strengthens Prostate Cancer, Vitamin D Link
Oct 27, 2014

After many research efforts and long hours spent in the laboratory, a group at the University of Colorado Cancer Center may have identified how vitamin D is connected to prostate cancer. The unifying link: inflammation.

“Inflammation is thought to drive many cancers including prostate, gastric, and colon,” said James R. Lambert, PhD, in a news release from the center. Dr. Lambert and his colleagues published their findings in The Prostate journal. As described in “Reduced Expression of GDF-15 is Associated with Atrophic Inflammatory Lesions of the Prostate,” the gene GDF-15, which is upregulated by vitamin D, is absent in cases of human prostate cancer driven by inflammation.

“GDF-15 may be a good thing in keeping prostate tissue healthy – it suppresses inflammation, which is a bad actor potentially driving prostate cancer,” explained Dr. Lambert.

full story . . .
Experts Urge Parents to Make "Every Day a Vitamin D Day", as UK Winter Arrives
Oct 21, 2014

LONDON, October 21, 2014 /PRNewswire/ --

  • Survey commissioned by Vitamin D Mission shows parents are in the dark about the lack of sunshine vitamin during winter and the importance of vitamin D to their children's diet[1]
  • Hospital data shows 231% national increase in rates of vitamin D deficiency amongst toddlers and children in five years[2]

New data published today for National Vitamin D Awareness Week has found that parents are unaware that the UK climate is denying their toddlers and children vitamin D during the winter months.[1] New hospital data also released today shows increasing numbers of children diagnosed with Vitamin D deficiency and bone-softening conditions such as rickets[2] - a disease common during Victorian times.

full story . . .
Following Sudden Cardiac Arrest, A Lack Of Vitamin D Will Increase Mortality And Decrease Brain Function
Oct 20, 2014

Turns out the sunshine vitamin is vitally important to survivors of sudden cardiac arrest — when your heart stops and the subsequent loss of blood flow causes you to stop breathing and lose consciousness. Vitamin D deficiency increases by a factor of seven, the risk of poor brain function following cardiac arrest, according to new research presented by Dr. Jin Wi at the annual meeting of the Acute Cardiovascular Care Association. Lack of the necessary amount of vitamin D also decreased a patient's likelihood of surviving.

full story . . .
How cola cuts vitamin D levels
Oct 16, 2014

London - Can drinking cola lead to a lack of vitamin D? That’s the suggestion from scientists at Laval University, in Canada, who asked more than 700 women about their intake of sugary drinks, including cola and sweet fruit juice.

Blood samples showed that women who drank cola three times a week had 12 percent less vitamin D than women who never drank it. Other fizzy soft drinks and fruit drinks didn’t appear to have an effect.

full story . . .
A bone breaks every 3.6 minutes! Aussies need calcium + vitamin D + exercise for healthy bones
Oct 16, 2014

New research was released today by the Australian Self Medication Industry showing that complementary medicines contribute to health outcomes and save the health system, government and taxpayer.

Osteoporosis CEO, Gail Morgan, said today “Complementary medicines such as calcium supplements and Vitamin D are important for people suffering with osteoporosis and low bone density.

Over 1.2 million Australians suffer daily with osteoporosis and over 6 million Australians have poor bone health.  Shockingly, less than half of all Australian adults get their daily recommended intake of calcium.  Calcium is essential for bone strength."

full story . . .
World Vitamin D Day - November 2, 2014
Nov 02, 2014        

Help us celebrate World Vitamin D Day on November 2nd!

Go to the website and learn how you can help.

Be part of the thunderclap:


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.

John J. Cannell, MD
Athlete's Edge - Faster, Quicker, Stronger with vitamin D

John Cannell, founder and executive director of the Vitamin D Council, provides a new perspective on the vitamin D story revealing a long-held secret once known only to Eastern European athletic trainers.

Vitamin D, the sunshine vitamin, improves muscle tone, muscle strength, balance, reaction time and physical endurance, as well as immunity and general health. In addition, ideal levels of vitamin D help protect you from a staggering array of chronic diseases such as cancer, heart disease, hypertension, diabetes, multiple sclerosis, asthma, autism and even influenza.

 more books...


Higher Vitamin D Does Not Raise the Risk for Kidney Stones

The Vitamin D Society wants to make the public aware of a recent study which reported that high levels of vitamin D had a lower risk of kidney stones.

Woodstock, ON (PRWEB) November 29, 2013

The Vitamin D Society wants to make the public aware of a recent study published in the American Journal of Public Health, which reported that study participants with the highest vitamin D blood serum levels actually had a lower incidence of kidney stones(1). These results show that higher vitamin D intake cannot be a substantial cause of kidney stones because as participants vitamin D levels increased, kidney stone cases actually decreased. The study was sponsored by GrassrootsHealth (GRH), a nonprofit public health research organization, and was led by Dr. Cedric Garland, professor of family and preventive medicine at the University of California San Diego. The research team used data collected from 2,012 participants enrolled in GrassrootsHealth’s D*action study. This study is the first of its kind to include participants with a wide range of 25(OH)D blood serum levels, especially on the higher end of the spectrum between 100 nmol/L and 250 nmol/L, and is therefore a more rigorous test of the suggested association with kidney stones than previous studies.

full press release

Vitamin D Levels Start Plunging in November

November is Vitamin D Awareness Month and the Vitamin D Society is urging all Canadians to check their vitamin D blood levels to ensure that they are not deficient. Canadians will no longer be able to make vitamin D from sunlight (UVB Light).

Woodstock, ON (PRWEB) November 22, 2013

November is Vitamin D Awareness month. A time of the year when your body’s vitamin D level starts to decrease dramatically as the reserves of vitamin D built up through summer sunshine rapidly deplete. November is the start of vitamin D winter in the northern hemisphere. In Canada the sun is low in the sky and the UVB rays that produce vitamin D in your skin do not reach the earth. People retreat indoors to bear the long, cold, low light Canadian winter. The Vitamin D Society is urging all Canadians to check their vitamin D levels through a 25(OH)D blood serum test, get their test score and ensure that they are at the optimal levels of 100-150 nmol/L as recommended by over 40 of the top vitamin D scientific researchers at GrassrootsHealth(1). If you are unable to test your vitamin D levels, Dr. Robert Heaney MD, Creighton University, recommends that you ensure your vitamin D intake is approximately 35IU per pound of body weight per day (75 IU per Kg/day). 

full press release

Vitamin D Day November 2nd Help Stop Vitamin D Deficiency

November is the start of the season when most Canadians become vitamin D deficient due to lack of sunlight. The Vitamin D Society is asking all Canadians to assess their vitamin D levels on Vitamin D Day November 2nd and to take action to prevent vitamin D deficiency.

Woodstock, ON (PRWEB) October 31, 2013

The Vitamin D Society is asking all Canadians to join us to celebrate Vitamin D Day on November 2nd and to assess their personal vitamin D blood levels and to take action to prevent a possible vitamin D deficiency. “Canadians should check their vitamin D level through a 25(OH)D blood serum test (ask for your test score) and ensure they are between the optimal levels of 100 – 150 nmol/L as recommended by over 40 of the top Vitamin D researchers at GrassrootsHealth(1)” stated Perry Holman, executive director of the Vitamin D Society

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
Enter ng/ml: nmol/L