7 Facts about Vitamin D You Never Knew

Vitamin D is crucial for your health, and there are some important points about it that you need to know. Check this out.


0:00 Introduction: Vitamin D deficiency
0:35 Vitamin D deficiency causes
2:10 Vitamin D explained
7:28 Learn more about vitamin D!

Today, we’re going to talk about vitamin D deficiency and some things you’ve probably never heard about vitamin D.

Vitamin D deficiency can cause:
• A compromised immune system
• Inflammation
• Sleep issues
• Digestive problems

Causes of vitamin D deficiency:
• Gut inflammation
• Missing gallbladder
• Thicker skin
• Darker skin
• Obesity
• Diabetes
• Insulin resistance
• Location (living further from the equator)
• Problems with certain genes
• Infection
• Fatty liver
• Smoking
• Sugar
• Stress
• Statins
• Low-fat diets
• Pollution
• Omega-6 fatty acids

It’s almost impossible to get vitamin D from your diet, so you need to take certain measures to avoid becoming vitamin D deficient.

Important things you may have never learned about vitamin D:
1. Most side effects that occur after taking vitamin D could be caused by a magnesium deficiency.

2. Infrequent large doses of vitamin D may be better than small daily doses.

3. Farm-raised fish have four times less vitamin D than wild-caught fish, and grain-fed animals have less vitamin D than grass-fed animals. Chickens and pigs that roam outside have more vitamin D than those confined indoors.

4. Vitamin D3 is the third biggest factor that improves overall health.

5. Vitamin D2 is very different from vitamin D3 and may inhibit the absorption of vitamin D3 and worsen MS. It’s also not effective to help with lupus or to decrease mortality, whereas vitamin D3 may be effective in these situations.

6. Ten minutes of skin exposure to the sun only provides about 400 IU of vitamin D.

7. Most vitamin D3 supplements in Europe (and possibly around the world) contain corn syrup.

Dr. Eric Berg DC Bio:
Dr. Berg, age 57, 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, 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.

#keto #ketodiet #weightloss #ketolifestyle

Thanks for watching! I hope this helps you better understand vitamin D. I’ll see you in the next video.


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  1. Aparna Bhide on March 28, 2023 at 10:18 am

    On the mark , precise , concise and cutting-edge as usual ! Thank you Dr Berg . I remain grateful to you for everything forever …..

  2. Yong Kim on March 28, 2023 at 10:22 am

    Thanks, Dr. Berg for an informative video.
    What level of vitamin D in blood is optimal?
    In 2021 I took vitamin D supplement 1,000IU-2,000IU everyday for a year that helped my Vitamin D level to go up to 50 (the high end of the recommended range). In 2022 I stopped taking Vitamin D supplement because I learned that too high a level of Vitamin D in the blood could potentially be dangerous and that 20-30 is the optimal range. My vitamin D level in the blood now in 2023 stays at 50 and wouldn’t come down for 1 year even after I stopped taking the supplement.
    I don’t go out in the sun because I develop hyperpigmentation (sun blotches) on my skin (especially on the face). I apply sunscreen everyday and put on long-sleeved shirts and pants to prevent sun damages on my skin.
    Any advice please?

    • someone other than myself on March 28, 2023 at 11:19 am

      @Keto Diet You are wrong. Kenyan pastoralists living in the modern world had an average of 48 ng/mL. And even they have POPs exposure which lower vitamin D values in the serum. The NIH is an empire of group compliance think and not real science. PTH hormone levels respond suggesting to a level below 80 nmol/L (32 ng/mL) so as to maintain serum calcium levels and PTH are raised to respond. PTH has number of actions and is a fun topic.
      Watch your serum calcium levels not so much your vitamin levels.
      IMHO and as my memory recalls. Refer to primary papers not half wit secondary sources.

    • Philip Wilkie on March 28, 2023 at 12:02 pm

      For what it is worth I have sustained blood test levels of 105 – 108 ng/ml (270 nmol/ml) for several years now. No obvious problems. Basically we are now on a 10,000 IU D3/ 180mcg K3 daily maintenance dose. My partner and I used to both struggle through every winter with repeated bronchitis, bad colds or flu’s. To the point where it was a real concern. Since we started working with Vit D3 about five years ago neither of us have had more than a few days of sore throat at worst. And both still free of the demon virus as far as we know.

    • Fatima Andres on March 28, 2023 at 3:57 pm

      ​@Keto Diet meu exame deu 100

    • FTeam on March 28, 2023 at 4:58 pm

      My vit d level was 8.8

  3. Patricia O'reilly on March 28, 2023 at 10:23 am

    Vitamin D makes such a big difference to my well-being 😊notice a big difference over Covid lockdown until I started taking Vitamin d feel so much better . Appreciate Dr. Berg .

  4. Kiesha427 on March 28, 2023 at 10:34 am

    Thank you Dr. Berg. My life became better since I met you.

  5. David Beatty on March 28, 2023 at 10:37 am

    Living in the Sunshine State definitely has its perks when it comes to getting that daily dose of Vitamin D! ☀ But even here, it still takes a conscious effort to ensure I’m spending at least 30 minutes outside every day. Dr. Berg’s informative and eye-opening videos like this one are truly a game changer! His dedication to our health and well-being is incredible. Thanks to him, I’m reminded to prioritize my health and soak up that sun, or at the very least, get my Vitamin D in pill form if necessary! 🌞💊

    • Cj Howard on March 28, 2023 at 11:18 am

      Probably one of the reasons why Okinawans live the longest. They’re always outside. It’s mainly sunny year round and warm. I lived there for a year.

    • flamingpie herman on March 28, 2023 at 12:20 pm

      Yes, because most of us have to work for a living and we’re indoors during the light hours

    • Michigan USA/Singapore S.E.Asia on March 28, 2023 at 1:13 pm

      Not really because too much of vit D can become toxic too

    • Cj Howard on March 28, 2023 at 1:25 pm

      @Michigan USA/Singapore S.E.Asia
      My Dr told me I need (everyone needs) 10,000 IU a day of D. But the vitamin bottles say 2,000IU. And my Dr said the body stores the D and uses what and when it needs it. Calling it a “checkbook vitamin “. I never heard of anyone o’ding on D 😆

    • Maria CANCER on March 28, 2023 at 3:51 pm

      Thank you so much for your videos! I had a misfortune, I was diagnosed with ovarian cancer. I also created a channel and am trying to move in that direction, but so far not very successful((xv

  6. MissAnnlaug on March 28, 2023 at 10:42 am

    My levels are up thanks to you and dr Ronda Patric! I feel empowered because of you all and my own new confidence about my own research!

  7. Gabriele R on March 28, 2023 at 10:58 am

    I have used vitamin D/K2 for many years, because I’m living in Norway. Why is it possible that groups of people and scientists now declare that vitamin D is not a vitamin (which I knew) and is dangerously disturbing the VDR, vit D receptors? Thank you Eric, as chronically ill, I appreciate your support with the videos very much ‼️🥳

    • Rit , on March 28, 2023 at 5:57 pm

      I live in Norway too,I need more vitamin D because l am originally from Africa.When I was in Africa I gott vitamin D from the Sun!

  8. Yankee 🌹 Rose on March 28, 2023 at 10:58 am

    I didn’t know there were three types of vitamin D. Thank you for sharing this incredible video Dr. Berg. ❤

    • HOW DARE YOU? on March 28, 2023 at 11:25 am


    • Maria CANCER on March 28, 2023 at 3:51 pm

      Thank you so much for your videos! I had a misfortune, I was diagnosed with ovarian cancer. I also created a channel and am trying to move in that direction, but so far not very successful((xv

    • Duran on March 28, 2023 at 4:15 pm

      🚨🚨🚨🚨 🚨 I almost lost my pancreas because of too much Vitamin D😮‍💨😮‍💨😮‍💨😮‍💨

    • DebbieTDP on March 28, 2023 at 4:20 pm

      It’s actually 5😊

      Vitamin D is a group of fat- soluble prohormones made up of 5 different vitamins : vitamin D1, D2, D3, D4 and D5. The two most important forms in which vitamin D can be found are vitamin D2 ( ergocalciferol ) and vitamin D3 ( cholecalciferol ), both of which have very similar biological activity. Ergocalciferol (D 2 ) is of vegetable origin, while cholecalciferol (D 3 ), deriving from cholesterol , is synthesized in animal organisms .

    • Privietik K on March 28, 2023 at 7:21 pm

      What happened to your pancreas?

  9. Jan Szoke on March 28, 2023 at 10:59 am

    It is interesting that insurance companies don’t want to cover the vitamin D test anymore. My former Dr said they found that vitamin D isn’t that important. I beg to differ.

    • Jans Sens on March 28, 2023 at 3:27 pm

      get one other doctor. very important take D3 10,000 per day.

    • Larry C on March 28, 2023 at 3:42 pm

      My primary MD test every patient for vit d levels

    • J Hildebrand on March 28, 2023 at 5:14 pm

      Time for a new doc!

    • Mia on March 28, 2023 at 5:16 pm

      That type of doc is not for u 😔
      Docs are supposed to help make us get better not the other way around. Go with your gut instincts.

  10. a h o n o • k on March 28, 2023 at 11:07 am

    Hi Dr Berg. I found out yesterday from my PCP that my Vitamin D and B12 levels are too high and she asked me to take a break from those two. I take your vitamins besides black seed oil, iron and sea moss. I was wondering, can you do a video dedicated to daily vitamins to take? For everyone not just people who are on Keto lifestyle? I think I might be taking more that I need.

    • Joe K on March 28, 2023 at 3:19 pm

      @Sarah One pill

    • Joe K on March 28, 2023 at 3:22 pm

      @Sarah I saw a post about joint pain. I had it bad for years. Stopped wheat and grains, disappeared in a few weeks never to return. Just putting that out there. Maybe try elimination diet carnivore. Look it up. Could be something you’re eating and the body is autoimmune state

    • xoxopurebloodxoxo on March 28, 2023 at 3:51 pm

      I recently started taking Beef Liver supplements. They say you don’t have to take a multivitamin if you take Beef Liver. Also gives amazing energy.

    • Rutger Reddingius on March 28, 2023 at 4:05 pm

      50-70 ng/ml (or 125-175 nmol/l, this unit gives 2.5 higher values) is optimal. 70-100 ng/ml is seen as therapeutic.
      If higher than that, you may want to go back to 70..
      Always always combine with vitamin K2 and magnesium!🌟

  11. Jason Mighty on March 28, 2023 at 11:23 am

    I got a skin rash that resembled psoriasis from vitamin D3 supplements. Took me 8 years to get rid of it. Got rid of it literally in 1 day by taking a high B complex supplement where all the B vitamins were in the 100mg range.

    • Zike Zikic on March 28, 2023 at 5:57 pm

      Medical Medium
      Anthony William
      YouTube Channel 👍

    • Klau on March 28, 2023 at 6:11 pm

      @J Hildebrand Nope🙁

    • C, dawnie on March 28, 2023 at 6:47 pm

      I broke out in hives for 3months I had to go to the emergency room twice, because the hive they were so out of control. My allergist referred me to a dermatologist which they did a biopsy of the hives…never again.

    • Privietik K on March 28, 2023 at 7:20 pm

      D3 is made of sheep’s wool. I can’t take D3 as it’s causing my anxiety and insomnia. Somewhat D2 works fine for me.

    • pearceclarissa on March 28, 2023 at 7:20 pm

      I broke out in psoriasis/dermatitis about two years ago when taking large amounts of d… my d won’t go up, but I can’t get rid of the rash. 😢it’s horrible and all over my fingers, ankles and toes!!

  12. metallmad77 on March 28, 2023 at 11:33 am

    from self trials, I noticed that when I started taking vitamin D supplement my insulin resistance went down to normal, my blood sugar post meals went down to almost normal even with carbs, it’s amazing!, I did not check for vitamin D deficiency but I live in the north where we can see the sun for only 3 months a year and cloudy the rest of the year!

    • Ed Douglas on March 28, 2023 at 2:39 pm

      what was your iu per day? or were you big dosing 1/2 times a week? and how long did that take? apologies for all the questions, think I’m in the same boat as you were.

    • metallmad77 on March 28, 2023 at 4:34 pm

      @Ed Douglas I started 2 weeks ago vitamin D3 2000 IU 1 pill every other day, I’ve noticed the effects after 5 days, as I check my blood glucose post meals for the last 3 years when I got diagnosed by coincident without any side effects during a normal blood test, I don’t know if it’s relevant, but it happened only when I started!

    • Ed Douglas on March 28, 2023 at 5:00 pm

      @metallmad77 thanks dude, super helpful <3

  13. Robin Walker @robinsnestradio on March 28, 2023 at 12:22 pm

    I have seen Vitamin D3 literally change many lives and lift depression. I live in seniors citizens building and I have told many of my neighbors to add Vitamin D3 to their life. It really helps with depression and inflammation.

    • TejasToolMan on March 28, 2023 at 4:29 pm

      It works I give my grandma 10k IU 2x daily morning and night, magnesium biglycinste 600mg she no longer gripes and complains all day about everything from 60 years ago. I buy Carlyle brand off Amazon the last 5 years

    • Goodie Bagz on March 28, 2023 at 4:54 pm

      Make sure they add k2

    • Godnyx on March 28, 2023 at 6:19 pm

      Cod liver oil RULES!!!

    • D G on March 28, 2023 at 6:23 pm

      Do you take it with K2- what brand, amount, etc?

  14. Cosmo Kramer on March 28, 2023 at 1:13 pm

    He should’ve mentioned the importance of taking the combo capsule of D3 + K2, instead of D3 alone.

    • Duran on March 28, 2023 at 4:16 pm

      🚨🚨🚨🚨 🚨 I almost lost my pancreas because of too much Vitamin D😮‍💨😮‍💨😮‍💨😮‍💨

    • D G on March 28, 2023 at 6:26 pm

      @Duran can you please explain- did you take with K2- how much were you taking?

    • D G on March 28, 2023 at 6:26 pm

      Wrong. It is best so they say to take them at different times of the day. I think the K2 in AM and D3 with fatty dinner meal. NOT at the same time.

  15. Brian WNC on March 28, 2023 at 1:59 pm

    Thanks doctor Berg. I’m a nutrition and longevity scientist who’s been hard on you in the comments at times but I also think you do great work most of the time. Great video

    • Níðhöggr Yggdrasil on March 28, 2023 at 6:42 pm

      I have one for you, as I posted above, No matter the combination, Vitamin D3 even with fish/cod oil or even K2, sends my blood pressure through the roof!! GNC reps tell me it is a known phenomenon and not everyone can take D3. My naturopath and osteopath tell me the same thing and diet, sun, and nature are better than a manufactured substance. In fact, I had a GNC area rep tell me many people stop taking D3 and their BP goes way down. My naturopath did say that D3 is way over blown and can trigger imbalances.

  16. L G on March 28, 2023 at 2:07 pm

    Almost 10 Million subscribers! Way to go Dr. Berg! 👏

    • Dimitri Ledkovsky on March 28, 2023 at 2:25 pm

      A regular YouTube oligarch.

    • catitude4 on March 28, 2023 at 2:29 pm

      That says it all doesn’t it. That would never happen if he wasn’t good at what he does.

    • Dr. Eric Berg DC on March 28, 2023 at 3:29 pm

      Thanks for your support!

  17. Ariful Islam on March 28, 2023 at 4:38 pm

    Dr. Berg, you are a blessing to the community around the world. I am from Bangladesh and i have been following you for over a year. You helped my community tremendously with all the information about our body and how it functions. Do you have any tips about Lipoma in the body? I have countless and am trying to find a remedy for it. I have tried homeopathic but it tends to not work. Any advice, your suggestions will be greatly appreciated. May Allah(SWT) bless you!

  18. Nomad Bard on March 28, 2023 at 4:59 pm

    Congratulations doctor on almost 10 million subscribers! I can’t think of a more deserving content creator. Keep up the amazing work doc!

  19. maureen green on March 28, 2023 at 5:38 pm

    I had normal vit d levels until I became ubber flouride toxic. It went down to 19 finally got up to 24 then the 36 started grass fed beef, but it has was done to 24. Will be interesting to see next labs next

  20. Esoteric Solitaire on March 28, 2023 at 5:52 pm

    Since getting my calcium/Vitamin D straightened out, I feel like a different person. But I still can’t take huge doses of Vitamin D without getting queasy or feeling bad. So I take it every so often and get outside, and that seems to work for me.

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