Vitamin D and Sun: A Quick Tip

October 23rd, 2010 (14,356 views) by Pinny Cohen

Vitamin D

Vitamin D is one of the most misunderstood vitamins, yet one of the most important. Vitamin D helps your body absorb Calcium, regulates minerals in your bloodstream, and has been shown to improve immune system function. Lack of Vitamin D has been linked to Rickets (soft bones).

Some doctors want you to take a supplement to get enough Vitamin D.  Others recommend eating Catfish or Sardines, which naturally have some Vitamin D. But the reality is that Vitamin D is only readily available in enough quantity through the Sun.

However, even then, your body can’t always get enough UVB rays from the sun to convert into Vitamin D.  Most people have heard “if you just get 30 minutes a day of sun” you’ll get enough Vitamin D – but that isn’t necessarily true.

Instead, remember this more useful rule of thumb:

 If you go outside in the sun, and your shadow is shorter than you are, that is an opportunity to get Vitamin D

The science behind it: This happens when the sun is at more than a 45 degree angle in the sky, when UVB rays are able to reach you through the atmosphere.

It is important to note that not all cities receive enough of this situation throughout the whole year.  For example, the southern U.S. receives this sun for more of the year than the northeast.  In these cases, you should take a supplement during those months.

Final note: Wearing sunscreen or blocking the sun with clothing will prevent you from absorbing the UVB, so be sure to have your arms and face exposed.

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3 Responses to “Vitamin D and Sun: A Quick Tip”

  1. Jason Says:

    Hey bud,
    American Academy of Derms and American Academy of Pediatrics recommend getting your daily dose of vitamin D via supplements. When going outside you should always protect yourself with sun block…even on cloudy days and in the fall/winter/spring. Intentional exposure to UV is now highly ill advised.


  2. Pinny Cohen Says:


    That is mostly old news. Studies have shown:

    Sun Block has raised the odds of cancer developing:



    ….and dozens of other studies.

    Additionally, sun screen blocks UVB rays, leading to Vitamin D deficiency (the outcome of which includes some horribles diseases like heart disease, cancers, etc.)

    The rate of Vitamin D deficiency has gone up about 20% in the past decade, much of it due to the addiction to sun screen many feel.

    Here is some more information on the topic:

  3. Jed A. Reay Says:

    Awesome topic Pinny, thanks for sharing. About two years ago I went to see a natural path and found that my energy level had be reduced, especially, in the winter. Well living in the Northwest has some advantages, but the Sun is not one of them. I now take 4000I.U. per day and feel on top of the world. I would say that anyone who lives in an area that gets less that 200-250 days of sun or that is concerned about the effects of sun take “D”.


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