The Vitamin D DANGER They Ignored (For Profit)
Dr. Berg’s Healthy Keto and Intermittent Fasting Podcast
Dr. Eric Berg
4.7 • 1.7K Ratings
🗓️ 20 February 2026
⏱️ 9 minutes
🧾️ Download transcript
Summary
Is vitamin D safe to take at high doses, or will it cause toxicity? Vitamin D fear is common, but what about the fear of vitamin D deficiency? Discover the vitamin D truth you’ve been searching for, and the real reason why there’s so much vitamin D misinformation.
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0:00 Introduction: Vitamin D myths and misinformation
0:55 Is vitamin D a vitamin?
1:41 Vitamin D explained
3:03 How much vitamin D should I take?
3:30 What’s behind the vitamin D controversy?
7:46 Vitamin D toxicity
8:05 Vitamin D deficiency symptoms
Historically, humans were exposed to daily, intense, unfiltered sunlight without any sunscreen. We’ve been convinced that the sun is dangerous and that taking too much vitamin D is risky.
Vitamin D is not really a vitamin! You cannot get nearly enough vitamin D from food. When you’re exposed to the sun, your skin makes vitamin D with the help of cholesterol. Vitamin D acts like a hormone and turns on over 1000 different genes!
There are two systems of vitamin D. The first system supports bone and calcium regulation, and requires the liver and kidneys for conversion into its active form. The autocrine or paracrine system is rarely talked about. Through this second system, inactive vitamin D bypasses the kidneys and liver and is converted into its active form inside the cell. This system of vitamin D supports the immune system, brain, muscles, nervous system, breast tissue, colon, and prostate. This system needs 8000 to 10,000 IU of vitamin D every day, while the other system only requires 600 to 800 IU every 3 weeks.
Vitamin D can significantly reduce cancer risk, posing a threat to the cancer drug industry, which makes over 300 billion dollars in revenue each year. Similarly, the Coimbra protocol is very effective at reversing autoimmune disease, which attacks another multi-billion-dollar industry. Vitamin D has also been shown to be beneficial for diabetes, high blood pressure, and depression.
Vitamin D toxicity is rare and would require extremely high doses of vitamin D taken for many months. The main problem associated with vitamin D toxicity is too much calcium in the blood, which can lead to kidney stones.
Vitamin D deficiency is incredibly common and can lead to immune suppression, decreased cognitive function, increased risk of cancer, and more. Vitamin D research often ignores the important cofactors magnesium and vitamin K2, which protect you from excess calcium accumulation.
Dr. Eric Berg DC Bio:
Dr. Berg, age 60, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the Director of Dr. Berg Nutritionals and author of the best-selling book The Healthy Keto Plan. He no longer practices, but focuses on health education through social media.
Disclaimer:
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, 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.
Transcript
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| 0:00.0 | Why you were taught to fear vitamin D. You know, vitamin D can be dangerous. It can raise your |
| 0:06.3 | calcium levels in your blood. It can even damage your kidneys. It can be very toxic. At least |
| 0:12.4 | that's what we've been told. But here's the question that very few people are asking. |
| 0:17.6 | Is it safe to stay deficient? Because humans have not evolved from avoiding vitamin D. |
| 0:24.6 | We have evolved under massive amounts of sun exposure, daily, intense, unfiltered without sunscreen. |
| 0:33.6 | And now suddenly we're told that the sun is dangerous, vitamin D is risky if you take too |
| 0:38.8 | much, and you must take safe amounts. What is a safe amount? It's never been established. The conventional |
| 0:45.2 | medical idea of safe amounts is amounts so small that it's not even biologically effective |
| 0:53.3 | for most conditions. Another thing that you have to |
| 0:55.9 | realize is vitamin D is not really a vitamin. A vitamin is typically something you get from food. And you |
| 1:03.6 | can get vitamin D from salmon and other foods, but you can't even get close to the amounts that |
| 1:09.7 | you really need from food. What's |
| 1:11.7 | interesting about vitamin D is vitamin D is actually made by your own skin with the help of the |
| 1:17.6 | raw material cholesterol. So if you really think about what vitamin D is, it acts like a hormone |
| 1:23.7 | that turns on many genes, like over a thousand different genes. And you're definitely |
| 1:30.8 | not going to hear this from your medical doctor because this is rarely taught in medical school |
| 1:35.4 | unless you're at a higher level in biochemistry. So you have one system of vitamin D right here |
| 1:42.6 | that really focuses on the bone and calcium regulation. |
| 1:47.9 | This system right here requires your liver and your kidneys for the conversion into the active form. |
| 1:54.4 | So in other words, when you take vitamin D or you have sun hitting your skin, it turns into the vitamin D that's inactive. It's not active yet. |
| 2:03.6 | Okay? It doesn't really do anything until it has to go through these different pathways and get to the point where it's activated and it ends up in your cell. |
| 2:12.6 | Now, this system over here rarely talked about. It's called the autocrine or paracrine system. |
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