The Guarantee of Vitamin D

Filed Under: General Health
Last Reviewed 07/01/2015

The Guarantee of Vitamin D

How to prevent a vitamin D deficiency

Numerous studies and the epidemiological trends over recent years support the theory that people need significantly more vitamin D than has been commonly accepted. A University of Toronto study involving 796 women between the ages of 18 and 35 showed that the generally recommended amounts of vitamin D for women are too low to offer any benefit. According to Reinhold Vieth and his colleagues, any amount of daily vitamin D intake under 800 IU wasn’t enough to prevent a vitamin D deficiency.

Despite this information and more, the general recommendation remains 400 IU per day for women under the age of 50.

Here are just a few of the health ailments that can be directly linked to inadequate vitamin D levels.

Heart Disease and Diabetes

Heart disease continues to reign as the number-one killer in this country. Although dozens of factors are involved in developing heart disease, excess sugar consumption and the inability to regulate blood sugar levels properly are undoubtedly two of the major contributing factors. Studies have now shown that low vitamin D levels decrease insulin levels and increase insulin resistance, both of which are associated with diabetes and subsequent cardiovascular problems.

I’ve also reported how the incidence of diabetes in children has been skyrocketing over the last couple of decades. Lower vitamin D levels have now been found to be one of the contributing factors.


Numerous studies have found a direct association between low vitamin D levels and cancers of the breast, prostate, colon, and the skin.


Studies have now shown that a lower-than-optimal level of vitamin D contributes to degenerative arthritis (the “wear and tear” form of arthritis) in the hip and the knee.


Sunlight exposure is a necessary requirement for vitamin D production in the body, and is also necessary for proper mood health. However, with the fear of skin cancer and wrinkling, tanning or even getting sun exposure has become taboo. The result is that depression is becoming more and more commonplace.

The problem is that, even under normal circumstances, it would be difficult for many people to get enough sun exposure to avoid depression in most of the Northern and Northeastern US cities. Only during a few summer months are there enough UVB rays reaching those areas to allow for proper vitamin D production. (The three main forms of UV, or ultraviolet, radiation from the sun are UVA, UVB, and UVC. UVB rays are the ones we need to produce vitamin D naturally, but they are also the ones that can produce sunburn and tanning.)

Even when UVB rays are adequate, most people now either slather on the sunscreen or avoid the sun altogether. Any sunscreen with a protective factor of 8 or more will block almost all of the UVB rays from reaching the skin.


Decreased vitamin D levels result in less production and secretion of the hormone leptin. Leptin is one of the primary hormones involved in fat storage and weight loss. Millions of dollars are now being spent on trying to duplicate these effects by artificially increasing levels of leptin in the body or turning it into a weight-loss drug. The simple answer, of course, is to ensure you’re producing and/or receiving adequate amounts of vitamin D.

If you’re concerned about losing weight or have the above problems, there would certainly be no harm in opening the shades and turning up the lights at mealtime. 

You Don’t Need the Government’s Permission to Increase Your Vitamin D

When you look at the increasing incidence of heart disease, diabetes, cancer, etc., it becomes obvious that most government agencies and health organizations are far too slow in changing or modifying their recommendations. I think much of the problem stems from bureaucracy and, oftentimes, politics.

Make sure you’re getting 2,000 to 5,000 IU a day. Don’t get worried about that much causing an overdose. Although various foods do contain vitamin D, unless you’re taking something like cod-liver oil, you won’t be getting much vitamin D. Milk is fortified with 10 micrograms per quart, which works out to about 400 IU per quart or 100 IU per each eight-ounce glass.

Make a point to get outside regularly and enjoy the sunshine, without the sunscreen. There’s no need to overdo it and get sunburned. Once your skin turns red, vitamin D production will stop anyway. Twenty minutes a day is all someone with fair skin needs to get enough vitamin D during the summertime. If your skin is darker, you’ll need more sunlight exposure to produce the same amount of vitamin D.

And always keep in mind that, in addition to helping produce vitamin D, sunlight exposure can help regulate your biological clock, fight depression, and possibly even help you to control your appetite and lose weight. As time goes on, we’ll undoubtedly learn dozens more reasons why people weren’t made to live underground, in a cave, or in a dark house or office.

DISCLAIMER: The content of is offered on an informational basis only, and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified health provider before making any adjustment to a medication or treatment you are currently using, and/or starting any new medication or treatment. All recommendations are "generally informational" and not specifically applicable to any individual's medical problems, concerns and/or needs.

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