Febico Blog
several foods containing vitamin D on the table

Vitamin D Deficiency and Supplementation


Some people are against all diet supplement but as you can guess we are not this kind of people here at Febico.

In today’s busy world people are not able to get all crucial nutritious from diet alone, mainly because of the bad eating habits.

That’s why it’s important to supplement your diet, especially in such an important vitamin as vitamin D.

Why do you need vitamin D?

Vitamin D has many functions in the human body, including one that is essential for proper calcium and phosphorus management and bone formation.

In other words – for our body to optimally use calcium, vitamin D is necessary, since it regulates the metabolism of this element. This vitamin also takes part in the functioning of the nervous, immune, muscular and endocrine systems.

So, the next time when you are in a bad mood or your immunity is weak, check your vitamin D levels first.

Vitamin D can be found in oily fish, meat, eggs and vitamin d enriched milk.

But remember – it is very difficult to get the right amount of vitamin D only from the diet – you would need to eat a large portion of oily fish (salmon, mackerel, tuna, cod) daily! For many people, this is just unrealistic.

Why Vitamin D Deficiency Happens Mostly in Winter?

The sun’s rays are necessary for vitamin D to be formed in our skin. In many climates in the autumn and winter, we have a little sun, which reduces vitamin D synthesis.

The older you are, the more vitamin D you need. Overweight and obese people are also in danger.

That said, even if you are young and healthy you may lack vitamin D if there is no sun around you.

The body’s need for vitamin D:

0-20 – shortage
> 20-30 insufficient concentration
> 30-50 optimal concentration
> 50-100 high concentration
> 100 potentially toxic concentration

How to Supplement Vitamin D?*

If you think (or you know you lack vitamin D after testing it), the best way is to start with a high dose of vitamin D.

Typically, supplementation starts with one vitamin D capsule a day, which is about, 4,000 IU/ 100 μg of vitamin D. That is is 2000% of the reference intake.

It is worth remembering that it is best to take vitamin D during a meal containing fats or directly after it. This is very important because vitamin D belongs to the group of fat-soluble vitamins.

After your vitamin D levels are back to normal, it’s good to continue supplementation, with 50 μg of vitamin D (2000 IU) daily.



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The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes only. The purpose of this website is to promote broad consumer understanding and knowledge of various health topics. It is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified healthcare providers with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.


Leave a Comment:

Robin clark says 5 years ago

I think chlorella is the best thing I ever used for bowel problems such as constipation I used it from my natropathic physician.

    Febico Health says 5 years ago

    He gave you a good advice 🙂

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