Vitamin D

Vitamin D Improves Insulin Sensitivity, Helps Prevent Diabetes

Friday, March 12, 2010 by: David Gutierrez, staff writer
Tags: vitamin D, insulin sensitivity, health news

eTrust Pro Certified

Most Viewed Articles
Popular on Facebook
CDC issues flu vaccine apology: this year's vaccine doesn't work!
The five biggest lies about Ebola being pushed by government and mass media
Ultraviolet light robot kills Ebola in two minutes; why doesn't every hospital have one of these?
Tetanus vaccines found spiked with sterilization chemical to carry out race-based genocide against Africans
Biologist explains how marijuana causes tumor cells to commit suicide
Companies begin planting microchips under employees' skin
The best way to help your body protect itself against Ebola (or any virus or bacteria)
NJ cops bust teenagers shoveling snow without a permit
Russia throws down the gauntlet: energy supply to Europe cut off; petrodollar abandoned as currency war escalates
McDonald's in global profit free fall as people everywhere increasingly reject chemically-altered toxic fast food
W.H.O. contradicts CDC, admits Ebola can spread via coughing, sneezing and by touching contaminated surfaces
Top ten things you need to do NOW to protect yourself from an uncontrolled Ebola outbreak
Chemotherapy kills cancer patients faster than no treatment at all
FDA targets Dr. Bronner's Magic Soaps for sharing health benefits of coconut oil
U2's Bono partners with Monsanto to destroy African agriculture with GMOs
Why flu shots are the greatest medical fraud in history
Governments seize colloidal silver being used to treat Ebola patients, says advocate
Flu vaccine kills 13 in Italy; death toll rises

(NaturalNews) High-dose vitamin D supplements may help increase the body's sensitivity to the blood sugar-regulating hormone insulin, thus reducing the risk of diabetes, researchers have found.

Insulin resistance (or insensitivity) occurs when the body's tissues stop responding as strongly to the presence of insulin. As a consequence, the cells uptake less sugar from the bloodstream, producing the elevated glucose levels characteristic of diabetes.

In the current study, conducted by researchers from Massey University and published in the British Journal of Nutrition, researchers randomly assigned 81 South Asian women between the ages of 23 and 68 to take either a placebo or 4,000 IU of vitamin D once per day. All participants suffered from insulin sensitivity at the start of the study, but none were taking diabetes drugs or vitamin D supplements larger than 1,000 IU per day.

At the start of the study, the average participant had vitamin D blood levels of approximately 50 nanomoles per liter, slightly lower than the average levels in a U.S. adult (60-75 nmol/L). After six months, women in the vitamin D group exhibited significantly more insulin sensitivity and less insulin resistance than women who had received a placebo. The largest effect was seen in women whose vitamin D blood levels had reached 80 to 119 nmol/L.

According to the Vitamin D Council, blood levels should be at least 125 nmol/L for optimal health.

Vitamin D has long been known to play an important role in bone and tooth health, and recommended daily intakes were originally calculated for these functions. Yet a growing body of research suggests that much higher intakes may be required to gain protection against cancer, autoimmune diseases, cardiovascular disease, diabetes and other chronic illnesses.

Health professionals currently debate what daily intakes are ideal, with the U.S. government recommending 200 IU for adults between the ages of 19 and 50, 400 IU for those aged 51 to 70, and 600 IU for those over the age of 70. The British government recommends that those at high risk of deficiency take a daily supplement of 1,000 IU. Yet studies such as the Massey University one keep pointing up the benefits of higher doses.

The study is not the first to connect vitamin D and diabetes. A 2009 meta-analysis published in the Journal of Clinical Endocrinology & Metabolism found that higher blood levels of vitamin D lowered diabetes risk. Likewise, in a study published in the journal Diabetic Medicine, researchers from the Sitaram Bhartia Institute of Science and Research in New Delhi found that a large dose of vitamin D significantly improved insulin sensitivity after meals in 71 men who were healthy except for central obesity.

Central obesity -- along with high blood pressure and high levels of fasting blood glucose, triglycerides and LDL cholesterol -- is a symptom of the condition known as metabolic syndrome, a significant risk factor for cardiovascular disease and diabetes.

Diabetes is widespread in the United States, with 24 million people diagnosed and 5.6 million undiagnosed, according to the U.S. Centers for Disease Control and Prevention. The National Institute of Health estimates that a further 70 to 80 million people suffer from metabolic syndrome or other "pre-diabetic" conditions. Some researchers have suggested that the nation's high rate of vitamin D deficiency might be partially to blame for this phenomenon.

Exposure to sunlight is still considered the healthiest way to get vitamin D, as the body can synthesize all it needs in only a fraction of the time it takes to acquire a tan. Health professionals recommend 15 minutes of sun every day on at least the face and hands for light-skinned people, and up to three times as much for people with dark skin. More time in the sun or some form of dietary supplementation may be necessary during the winter for people living far from the equator, especially those with dark skin.

Sources for this story include:

Join over four million monthly readers. Your privacy is protected. Unsubscribe at any time.
comments powered by Disqus
Take Action: Support by linking back to this article from your website

Permalink to this article:

Embed article link: (copy HTML code below):

Reprinting this article:
Non-commercial use OK, cite with clickable link.

Follow Natural News on Facebook, Twitter, Google Plus, and Pinterest

Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...


Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of, the internet's No. 1 natural health news site. (Source:

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.