How Much Vitamin D Do I Need? SURPRISING

Most people are not getting enough vitamin D. Find out how much vitamin D to take on a daily basis.

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0:00 Introduction: How much vitamin D to take
0:10 What the experts say about vitamin D
0:34 How much vitamin D do we need per day?
4:32 Share your success story!

Let’s talk about how much vitamin D you need on a daily basis.

The Vitamin D Council stated that healthy adults need 2000IU of vitamin D per day if they’re getting little or no sun. Other experts recommend getting 400-800IU per day.

The problem is that vitamin D is measured in international units (IU) in supplements. But, when it’s measured in the blood, they use ng/mL. So, it makes it confusing to know how much vitamin D someone should take if they’re deficient.

The optimum concentration of vitamin D in the blood is 40-60ng/mL. So, if you had 20ng/mL, that would be low. But when you convert 20ng/mL to international units, you get 0.8IU/mL. An average-sized person has about 5L of blood, which would give us 4,000IU of vitamin D.

Something doesn’t add up. This means that people who are deficient in vitamin D with 20ng/mL have about 4,000IU of vitamin D, which is greater than what’s recommended.

So, how much is the optimum concentration of vitamin D in the blood, which is 40-60ng/mL, in international units? The answer is 8,000-9,000IU. This is what’s actually normal in the blood.

How are you supposed to get the vitamin D you need if you only take the recommended amount? On top of that, you’re probably not absorbing 100% of the vitamin D you take.

I believe the correct amount of vitamin D the average person should take is at least 10,000IU per day. They should also get plenty of sun exposure if possible.

I believe vitamin D is the most important vitamin—make sure you’re getting enough.

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Dr. Eric Berg DC Bio:
Dr. Berg, age 56, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of the best-selling book The Healthy Keto Plan, and is the Director of Dr. Berg Nutritionals. He no longer practices, but focuses on health education through social media.


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Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients so he can focus on educating people as a full time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

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Thanks for watching! I hope this helps you better understand how much vitamin D to take on a daily basis.

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