Featured Product

Zwell Reflexir

Zwell Reflexir Zwell has picked REFLEXIR™ as the best natural product to address joint pain, and the stiffness and inflammation that are commonly associated with arthritis and overuse. Why settle for temporary relief of pain when you can get to the root of the problem?


$32.00 90 capsules/bottle

Buy Now

Sign up for newsletter

Be Zwell informed and gain greater control of your health!  Get straight forward information, specifically for people 50 years and older, from Trusted Advisors in the Health and Wellness field.  It's FREE.

"The article on low stomach acid by Jill Hillhouse was the best, most comprehensive I have ever read on the topic.  Kudos to the writer.  This newsletter is going to get forwarded to a lot of nutrition clients."

Helen P. - BA, RNCP, ROHP

Sign Up Now

Learn : How your body works, how various conditions effect your body, how to fight disease, get health news, product information, the lastest scientific discoveries on aging and special Zwell offers.

"I have to admit, I was somewhat in the dark before I started getting your newsletter. Keep it coming."

Nancy (Fredricton, NB)

Jill Hillhouse
A Day Without Vitamin D Is Like a Day Without SunshinePDFPrintE-mail
Written by Jill Hillhouse

Vitamin D has been best known for its role in preventing rickets and supporting calcium absorption for bone health but research over the past couple of years has uncovered more about the other roles Vitamin D has in the body specifically, in the H1N1 era, with regard to immunity.

A recent study about Vitamin D and immunity was published in the American Journal of Clinical Nutrition in March of 2010, and it demonstrates very exciting results. From December 2008 through March 2009, researchers conducted a randomized, double-blind, placebo-controlled trial (the gold standard in scientific testing) that compared Vitamin D-3 supplementation with a placebo in school children. They found that the children taking the Vitamin D supplementation had a 42% lower risk of catching the flu than the children taking the placebo. Additionally, asthma attacks in the children that had previously been diagnosed with asthma almost disappeared during the same time with the Vitamin D-3 supplementation.

But how does this all work? Another new study done at Copenhagen University shows us. The immune system has many components but the front line soldiers are called the T-cells. T cells work by either attacking and destroying all cells carrying traces of a foreign pathogen or by assisting the immune system in acquiring memory. The so-called helper cells send messages to the immune system, passing on knowledge about the pathogen so that the system can recognize and remember it at the next encounter and launch a more efficient and enhanced immune response. The researchers discovered that the first stage of the crucial activation of the T-cells involves Vitamin D. "When a T cell is exposed to a foreign pathogen, it has an immediate biochemical reaction and extends a signaling device or 'antenna' known as a Vitamin D receptor, with which it [searches] for Vitamin D. This means that the T cell must have Vitamin D or activation of the cell will cease. If the T cells cannot find enough Vitamin D in the blood, they won't even begin to mobilize," explains Professor Carsten Geisler, lead researcher. Without T-cell activation, our immune system is severely compromised. The implications of this study are profound, considering that almost half of the world’s population has lower than optimal levels of Vitamin D and 97 percent of Canadians are Vitamin D deficient at some point during the year.

What about getting Vitamin D from the sun? This is a natural option – if you live above 35 degrees latitude. The most southerly latitude in Canada is 43 degrees, found in southern Ontario and the southern tip of Nova Scotia. For those of us that live above 35 degrees latitude, the sun is only at the right altitude for making Vitamin D in the body from about April until early October. So we should get all the sun we can during that time right? Well, maybe, but while it is the UVB rays from the sun that launch the production of  Vitamin D in the body, these rays also cause sun burn and the related negative effects. Oh, and we can’t make Vitamin D if we wear sunscreen.

So what are we to do? Health Canada says people need 200 to 600 International Units (IU’s) per day and the Canadian Cancer Society has been recommending 1,000 IUs per day. The children in the Vitamin D study were given 1200 IU’s. Consider that the body will make about 20,000 IUs when exposed for about 20 to 30 minutes to midday sun in the summer. The best bet is to have your Vitamin D levels checked (a blood test no longer covered by OHIP) and then speak to a Trusted Advisor on your health care team about the best supplements and dosing for you.

References :


Khalsa, Soram. The Vitamin D Revolution. Hay House Inc. 2009.


Marina Rode von Essen, Martin Kongsbak, Peter Schjerling, Klaus Olgaard, Niels Ødum, Carsten Geisler.  Vitamin D controls T cell antigen receptor signaling and activation of human T cells.Journal name: Nature ImmunologyVolume: 11, 07 March 2010; 344-349Pages:


Immunity Products

Supermeal Berry

Supermeal Berry Supermeal is a whole food meal and dietary supplement specially formulated for the nutritional needs of men & women age 45+. For many, meeting optimal nutrient requirements is challenging on a consistent, daily basis.


$98.00 Contains up to 15 Complete Meal Servings
or 30 Snack Servings
Buy Now

Zwell Vitamin D3

Zwell Vitamin D3 Vitamin D deficiency can lead to such health problems as osteoporosis, decreased immunity, and reduced ability to fight influenza. This all natural, certified organic, food source D3 product is our recommendation as the best product in the market today.


$8.50 120 tablets/bottle
1000 IU/tablet - NPN 80006029
Buy Now

Zwell Krill Oil (Omega-3)

Zwell Krill Oil (Omega-3) Zwell’s Krill Oil has unique properties for better bio-availability (use by bodily cells) than other fish oil products and is clinically proven in double-blind trials to benefit good health.


$33.00 60softgel capsules/bottle
NPN 80006416
Buy Now


OPC-10 OPC-10 is a nutritious and delicious isotonic drink. As our selection as the best OPC product on the market, it has a full range of the most potent antioxidants, delivering the crucial polyphenols and proanthocyadins for maximum health benefit.


$48.00 300gliquid/bottle
30 servings
Buy Now


Click the above image to order your FREE copy of the Zwell Magazine.


Did you know?...

For many people, eating the nightshade family of food (tomatoes, potatoes, eggplant, peppers) can worsen Osteoarthritis. Read More...


Chocolate can reduce cholesterol and blood sugar, and can be a perfect treat for people with Type 2 diabetes.  Read More...


Zwell has a user community here where you can ask questions, get answers, and share ideas with fellow Zoomers.



 Submit >>



Healthy Tidbits

A lengthy review published on July 5, 2011 in The Cochrane Library reveals that supplementing older individuals with vitamin D3 is associated with reduced mortality over a two year average period.



Researchers now suggest that daily intakes of vitamin D by adults in the range of 4000-8000 IU are needed to maintain blood levels of vitamin D metabolites in the range needed to reduce by about half the risk of several diseases such as; breast cancer, colon cancer, multiple sclerosis, and type 1 diabetes.


Findings published in the American Journal of Clinical Nutrition indicate that 25 percent of study participants of the Canadian Health Measures Survey had blood levels below the RDA for Vitamin D.


Supplement users had higher blood levels of the sunshine vitamin, according to the new data, and reliance on food sources may be inadequate to ensure optimal blood levels of vitamin D, according to researchers from the University of Saskatchewan, Statistics Canada, and the Public Health Agency of Canada.