The Truth About Vitamin D & Warning Signs Your Body Is Deficient | Dr. Mark Hyman 

We need more capability to test ourselves at home. I hate going to the doctor. I sit in the waiting room for over an hour, then sit in a little cold room for another 25 minutes. The doctor comes in and sees me for under 10 minutes, says, “Hello, how are you?” and ignores my answer, tells me I seem to be doing fine for my age, 80, and writes me an order for a blood and urine test. (Why don’t they have me do those before the appointment, so we might have something to talk about?) My knees hurt. He gives me a prescription for 600mg Ibprophen 3 times a day. No checking about why they hurt. Then says I’ll get my test results in the mail, and I should call if I have any questions. How would I know what to ask. We are done in 9 minutes, and he has hurried out of the room. My test results come to me and what’s tested for is minimal. Vitamin D? No. Total cholesterol only. A recommendation for statins based on the one number. RU-vid docs need to know what the real world is like. They say go to another doctor. This is my third one. All alike.

I went from 22 to 65 in a year.. I take 10,000 IUs before bed.. it’s really helping my autoimmune conditions

Everyone was surprized by the low levels of covid deaths in Africa. I think we might know why now.

My vit d is chronically low. 17-23-27-20 the past 2 years...yet the doc doesn't seem worried about it...the more I learn the more I worry about it...

Went to an orthopedic surgeon and PT for years for ddd and chronic pain from the ddd. Never once mentioned vitamin D. Started getting a little sunshine, supplementing D, and saw a chiropractor. Almost 2 years pain free.

Since taking 5000 units daily living in Pacific Northwest Winters I have no more seasonal affectiveness disorder or osteoporosis

What's your opinion on Eric Berg. He seems to give a lot of the same advice as you...but gets labelled a quack. All I know is... I've used advice from you and from him and my health has improved.

I've been going through your videos and fining out just how serious of a situation I was in. I had blood work done to deal with stuff going on with me and my vit D was 10.5!! thats it! Now its 29.7 so its getting better but I am continuing to work on it. the problem comes from the fact I am a Hermit. I barely leave the house. I only go out when I have to. so thats why it got so bad!

I just had mine tested a month ago. I am always outside… mine was 32. My doctor said it was fine. I’m taking supplements now.

Key points: 00:03 🌞 Vitamin D deficiency affects over a billion people worldwide, with 70% of Americans having insufficient or deficient levels, increasing risks of various health issues. 01:39 🦠 Vitamin D regulates calcium, supports immune function, and significantly impacts the risk of infections like COVID-19, playing a vital role in preventing serious complications. 03:19 💉 Testing for vitamin D is crucial, yet often missed by conventional medicine. Optimal levels differ from normal ranges, with 45-75 nanograms per deciliter considered ideal, not the common 30 or lower. 06:35 💰 The cost of untreated diseases due to vitamin D deficiency can be significant, outweighing expenses related to testing and supplementation. 11:50 🏙 Lack of sunlight, sunscreen use, urban living, certain medications, obesity, aging, gut issues, and poor diet significantly impact vitamin D levels, contributing to deficiencies in modern lifestyles. 20:42 🦠 Low vitamin D can lead to inflammation and weaken the immune system, causing frequent sickness. 21:24 💪 Adequate vitamin D levels reduce flu risk by 75% and can alleviate bone/joint pain, mood issues, and fatigue. 22:31 🩺 Low vitamin D is associated with cancer risk due to its anti-inflammatory and immune-boosting properties. 28:43 🦠 Severe COVID risks are higher in those with low vitamin D levels; supplementation may reduce complications and hospitalizations. 30:18 🧠 Vitamin D influences mood, link to depression, anxiety, and cognitive disorders; optimal levels crucial for overall brain health. (Generated with HARPA AI)

Test not guess ❤

My relative told me a woman not so elderly got really sick, and part of her treatment was to get her almost naked with the morning sun, straight for weeks, that healed her back to normallity. Now with this video IT ALL MAKES SENSE!!! WOW THANKS DOC TYSM for keeping us posted

Thank you for helping me further understand something I only recently learned. I had no idea that my severe depression every Christmas was due to a lack of Vitamin D! I feel SO fortunate to have heard this! Why in the world us this kind of information so hard to come by?? It is a real shame truly. 😢

Mine was at 12. My doctor gave me a prescription of D. But it wasn’t D3. And had no K2 with it so it didn’t help. I found out more about what your body really needs and found some that actually works. I was only tested because of having fibromyalgia arthritis degenerative disc disease. Among other health problems.

50,000. Units. Every week for 8weeks mine was 12 at rheumatoid clinic.

I have had chronic issues for years I knew my VitD was low but no mention as how important it is to your body!!!

Nailed it optimal vs "normal" i think lifeguards are probably very happy...thank you for this very valuable information! You are great a covering alot of info in a short time 👏👏👏

Hi, Mark! You should make a podcast video with Dr. Stasha Gominak. She is a sleep coach neurologist, loves vitD too. I'd love to hear that conversation. Take care! :-)

Great video

Thank you, I wish someone had told me that in the past, I would have had much less flues. But better late than never.

Thank you , I shared with two friends.

Thank you so much for all the information you share!😊💛

Thank you very much Dr! I ask for blood work every 6 months. I can't follow my regular doctors advice, because she believes in the normal range. I'm going for OPTIMAL. (which I've told her multiple x) so I adjust my intake accordingly. I need higher amounts of D3 and magnesium. Thank you for this important information!!!!

Really eye opener.thankyou somuch of the informs dr. God bless you . Listening from solomon islands

Thank you for your best advice and information 👍 all what you saying is right ✅️ but........

I like all your videos

I take 5,000 units with K2 daily. Mine was 76 6 months ago. I asked for it to be tested in my last bloodwork

❤thank you God Bless you ♥

56 for me, middle of last September (lots of sun that time of year) first time it was ever tested and the doctor did it on his own. I suppose because it's listed as one of the supplements I take? Testing for vit D was never included on the yearly blood work before. I upped the dose to 5000 IU/day some days 10000 with K3 because I'd like it to be in the upper range of normal and we don't get much sun this time of year.

My most recent vitamin D test was done last May and it was 33. It’s been lower in the past. My Doctor said it was “normal ~ stable” Thank you Dr. Human.

Wealth of knowledge 🙏 May God bless you and may you live a long life to be able to educate us 🙏 humanity is gracefully grateful to you🙏♥️🙏

Hey doc did get any reactions to the cs

Boron helps with osteoporosis. Some people cannot take calcium because of kidney disease.

Hello Dr I was just got diagnosed with Lichen Planus, I am thinking is related to low vit D level. What do you think?

N.W, small fish - ollican. Very expensive and is very much an acquired taste as it is slowly fermented in traditional ways. Last I heard back in the 90's it was $100 plus for a gallon.

Im one who is suffering from this now and have had every thing you have talked abought. Only cancer and covid and ricketts are the 3 things i have not had so far! In the proce. of finding a dr. start parathyroid investagation and find out whats going on. My labs for at least the last 3 years have been showing this low D but my dr. did not see it! Not sure what happened with that. A new dr. at this wellness center finnaly saw this 6 mo. ago and told me my labs had been showing this for at least 3 years, maybe more. Im left speachless by this and will forever be so thankfull she gave me my life back. Oh by the way my level was 8 not 80 but 8. I got the vit D yesterday so hope i feel better soon.

This vitamins seems very very important

Hi Dr. This is a fantastic video! It’s really helpful. I have a low thyroid and Hashimotos, and dealing with symptoms. Working on getting lab levels up 🙏🏼🙏🏼 Thank you for the good info you put out. Happy New Year!

do the noble cause and aware people about natural way of living

Hi I need your help for tiroyd what your recommendation please the doctor said is high

In 2019 I was vitamin D deficient. I went in for other symptoms but yes, I lost the hair on my legs. It came back as it was caught early enough. I felt better too.

Interesting informative video - in my practice optimal levels is considered 100-125??

My was tested in February. I was 16. Eye opener.

I would love Dr Hyman’s opinion on alopecia totalis. Even in someone who has optimal vitamin d levels

My Vitamin D is a 14. I just started taking a prescribed vitamin D supplement. I'm going to start trying to get sun every day. It's hard to get my body in the sun. I where full gear while working. I bruise all the time, my spine and bones started hurting, I'm so, so tired, my hair is bridle it just snaps off, my emotions have been wild at times. Everything gets worse when I have my period. I'm taking my Vitamin D deficiency seriously now. Has anyone been in my position and fixed their problem? How long does it take to notice things get better

What kind Of suplement is good to use

Dr. Hyman, what are your thoughts on Vit D3/K2 instead of straight Vit D3? Is the K2 safe at higher levels? I take the Thorne liquid drops. Curious about your thoughts.

Should the Vitamin D test be done annually?

Thank you so much for this video. I learnt from it. That’s why I prefer to trade pharmaceuticals and health care stocks. Who trades the financial market?

Can you do a segment on Kidney stones if you have any knowledge.....this area of health is so overloooked... We are left to fin for our-self.

I was tested i assume because i mentioned feeling fatigue. Mine is 16. Just got the results after a couple of months.

Dr Hyman, I’ve tried taking one teaspoon of cod liver oil, with breakfast and it seems to always make me a bit lightheaded and sleepy. I started this because my vitamin D is always low. Is my body trying to get used to it ?

Is vitamin D good if you already have Alzeimers?

Dr. Hyman, I am very interested your claim that our Vitamin D status affects angiogenesis. I do understand that we don't want to encourage angiogenesis in tumors, but we do want to support it for Heart and Skeletal muscle fuel / oxygenation to enable CV health and exercise performance. (I subscribe to Dr. Seyfried's work in starving cancer of fuels like glucose and glutamine.) Any time I find a health finding which is at at cross purposes, it makes me want to dig deeper into the subject in order to understand what is really going on if possible. 1. Could you share the Vitamin D / anti-angiogenesis study you referenced? 2. Would you consider digging deeper into this subject so that you could do interviews and / or an explainer video about it? You will be happy to hear that just last night when I was evangelizing about the benefits of Vitamin D and zero processed carbs for health to a customer, he shared that his doctor referred him to your diet book to help him modify his nutrition in order to control / reverse pre-diabetes. It seems that he is one of the lucky few to have a competent Doctor in these terribly misguided times. I forwarded the above video to him to help get him onboard the Vitamin D path to health. Thanks for all you do. May you and yours be well. ct

Do you know Doctor Koohestani?

Great disclaimer up front👍. As it should be

The people in the studies with higher levels of vitamin D might also be doing more outdoor exercise (and hence sun exposure). So it’s actually the exercise that is improving their health, not the vitamin d.

I wonder if this is why I feel overall like crap with daily headaches and fatigue? My vitamin D3 at my most recent blood test was 34 ng/dL, which is considered normal, but it is on the low end of normal.

Just found out my D level is 158 and my dr freaked out. I take 10,000 IU’s a day. I’m never sick. Any input would be appreciated.

Great video. Taking the D3K2 in a liquid form is really optimal for me. I usually do about 20KIUs daily and floss nightly and my D levels are very good. Thanks for your help Dr. H

Are tanning beds a good & safe source for vitamin D, & what about UVB reptile lights. & do windows block vitamin D absorption?

You have to be your own health advocate by doing research, finding what the true answers are getting your blood tested able to read the results. You have to do it yourself that’s the bottom line.

Dr Hyman thank you so much for all you work. I’ve been a follower for over three years and I have one remark: you speak too fast for people who are not english speaking like me . Best regards.

I agree with how crucial vitamin D is and how incredibly difficult it is get to from food. The sunshine vitamin cannot really be synthesized since we don't really go out in the sun during the critical hours esp naked enough to get it. Here in the US and ither advanced countries we have access to natural supplements and people go thru medical content. What about countries like India where the supplement awareness at least for something like vit D? Though we have sun almost all the year round thru out the country, we are not really out in the sun naked. Most of the time they eat plant based meals. At least my parents were out in the mid day sun half of the year playing as kids and me and my sis during school breaks but that was decades ago. I got my first vit D testing done 11 years ago and it was 25 or something. I didnt supplement back then. Though I was in the normal range, it was not optimal. Do we also need to consider ethnicity into consideration for some supplements? Are the Indian suncontinent genes or near equator populations different in metabolizing stuff differently than someone from higher longitudes?

K2/mk7 isn’t mentioned. That’s needed to direct the calcium into the bones

My level is 27 ng/ mL .. having MCAS. I’ve been trying to take vit D3/k2 but even 1000 UI (one drop) gives me arrhythmias and fatigue. Why is that ? Thank you

Which Kind Or Should I Say Brand Of Vitamin D3 Is Best ?

Thank you for this information. You need to interview Dr Ellie Philips DDS. She is the only dentist that explains how to reverse cavities. Check her out.

Hello! Best form of vitamins to take for quicker relief? Sublingual, liquid, pill? I just ordered 50k IU with 200 mcg K2 in pill form with coconut oil. I will take it every other day for a week or two, then switch to 10k IU with K2 afterward. Edit: my levels are 17 ng/mL and would like to get them to 100 ng/mL

Thank you for this video. Please could you give us more information about vitamin B12, as I have always a high B12 level in the blood test (979), and every time it’s increasing. All my other tests are good including vitamin D (40). My doctor told me that he doesn’t know why 😢. Many thanks

Low vitamin d levels contributed hugely to deaths from covid-19.

The range from Quest is 30 to 100. Lowest mine has been was 17, so I have been taking vitamin D on and off since, but I quit taking it in the summer and often forget to start taking it again when the weather cools. Mine was 30 at my last bloodwork, but I have definitely been feeling deficient. I don't have soft shin bones, but I am prone to broken toes. I have ADHD and am terrible at remembering to take supps regularly, but I'm thinking I should be adding this one to my daily pill box.

I want lifeguard levels!

how much is too much?

I just don’t understand why these tests aren’t being done. I had to leave my pcp doctor because these tests cost hundreds of dollars after insurance. I feel that the general medical care population wants to keep us sick because of the money. It s sickening.

Does liquid d3 absorb better?

I have been suffering from hip and joint pain. I had my blood checked for a vitamin D deficiency. My level was at 8.9. I'm on a once a week vitamin D supplement. Any other suggestions?

got my results today 106 ng / ml - higher than it's ever been but I'm supplementing regularly for a long time now with K2 and magnesium and zinc, if anyone has evidence that this level is too high please let me know

I'm 24 and my vitamin D is at 33 seems like its right above whats called a mild deficiency. I've been taking 2000 units a day but I started taking 4000 a few days ago because I'm not comfortable with being just above a mild deficiency

How about sublingual?

You should do video on kid’s dying of heart conditions

Simply because vitamin d has a sterol like structure close to cholesterol, it is considered fat soluble, but, that doesn't mean that it accumulates in fat to toxic levels, that is basically a myth, fat storage is not well delineated, and it's release to provide 25OHD in times of no sun, is not well researched, and missing any mechanistic understanding, it is an assumption, a logical assumption which may or may not be true, and doesn't really seem to pan out. There is vitamin d in all tissues, but the confusion is the term superfluously given to circulating calcidiol 25OHD as 'storage' because it has a relatively long half-life of about three weeks to two months or longer, does not make it a closet for a rainy day usage. There is a reason why calcidiol has a long half life, is because it helps with keeping ionized calcium in a tight range the most important physiofnx for life, so having a system of renal feedback mechanisms of different organs and keeping basal amount of 1,25OH2D3 calcitriol always ready in availability and use nano second to nano second, without it having to be in large amounts (as that would be toxic), the system for long term use, ensured stable ionized calcium (intestines, kidney, bone, parathyroids) we call endocrine fnx of hormonal release and signaling, a highly and tightly regulated system. Contrasted to the greater use of vitamin d which is anything but long term, it is always being used, dependent both on diffusion as into immune cells, and muscle cells that use coupled protein uptake (muscles, kidney, etc) short term immediate use, metabolic conversions and immediate breakdown are paracrine/autocrine etc.. not reliant on circulating 1,25OH2D3. This idea of getting toxic build up of vitamin d intake of normal physiologic amounts like 10,000iu perday, or 5000iu perday in normal weighted people of at least 100 pounds is a myth, there is a steady state of saturation, vitamin d levels pan out and do not ever increase, they reach an equilibrium of range. Just like the idea that taking vitamin d simply increases calcium linearly so therefore taking vitamin d long term will inevitably create high calcium levels is a myth. Toxicity of vitamin d is not because of accumulation in fat because of its fat solubility, or that it is eliminated through the fat pathways of cholesterol elimination via bile and into poo, (unlike water based vitamins which are excreted in urine), the toxicity is one of calcium levels that are increased by virtue of dynamics of superphysiogic amounts of vitamin d that override the basic normal physiology feed back mechanisms, not because of toxic build up because it's a fat soluble vitamin. It can be an acute intake especially in small weighted individuals such as frail or infants and is life threatening, or long term use of very high supraphysiologic amounts such as those used via guidelines in India injections of 3000,000iu, 600,000iu injections. manufacturing mistakes are the majority of causes of hypercalcemia due to supplementation and food fortifications. Fat solubility refers to its molecular construction, how it travels in blood, how it interacts with other molecules. In the intestine, depending where, vitamin d is passively diffused/absorbed, or further on down it can be absorbed as part of the sterol system, it is not a fat, streols and fats have different mechanisms of absorption, though they get all piled into the micelles, they then have different postal codes. In the lymph vitamin d bonds with VDBP, albumin, and some lipoproteins like HDL, hdl is highly used in the immune system as well.

I was taking 30,000 a day of vitamin D for many months. My lower back didn't hurt any more. I got it tested (though my Dr. thought it was strange to check). The results said "higher than 120" and I was told I was at toxic levels. I lowered it to 10,000 per day. Haven't been rechecked, though I should be. My back aches again. Really think I should up it, but don't want negative reactions. Thoughts?

Thank you Doc. What is the best time to take Vitamin D? I’m the morning or afternoon? Thank you

I have never been tested , i used tanning beds for many yrs . Im 47 and started tanning again . Omg its been 1 month and i feel so good ! I thought i was feeling my age ! Yesterday i thought i must have needed vitamin d ! I do not and cant drink milk . Its crazy how improved i am ! Mentally , physically, and i just noticed my heartburn isnt here anymore ! I swear no matter what i ate i would have heartburn ! I want to shout out to everyone to get vitamin d ! ❤ im thinking the world is all ill from no sun on them !

Great information. Need to get my level up. I am at 29.5. My doc said it wasnt anything to worry about...but I will be supplementing. Thx for your work and you present it well. Also, for sun exposure... I think u need 40% body exposure to sun and best to lie flat so it is not all on your head. I watch loads of youtube...and docs like Sten Ekberg and Berg, etc

Could D3 prevent the wearing down of hip joints? Therefore preventing the need for a hip replacement?

Yes but the OH test shows the STORED Vitamin D in your body not the active part.Is that correct ?

Hello !!! I have results for Vitamin D and D3 ( blood ). And I understand the results : D is 13.3 and D3 are : 59.9. Why is this difference ? Can someone explain?

Can someone take vitamin K2 &m magnesium gly while on dialysis??

Is there a better area than The shins maybe an area that doesn't have potential to retain fluid I think people would diabetes have easily fluid problems so their shins are already squishy I don't know if they can even feel their shin bones properly so is there another spot?

Dr Hyman I was wondering do people with lighter or darker skin tones need more vitamin D on average?

Yes, but there are also many reputable studies that demonstrate that taking high levels of vitamin D cause hypercalaemia, cause kidney stones and actually make the bones more frail, rather than less frail. I'm not in the US, so I can't speak to an American diet. But eating a diet with oily fish, eggs, good dairy like cheese, full fat live yoghurt on a daily basis should provide all the calcium the body needs.

I have Hashimoto's disease and take 10,000 IU daily.

I found out I had vit d deficiency (along with iron deficiency and b12 deficiency) last July. Had a hell of a time supplementing with anything. My body was so deprived at the point of me trying to fix my deficiencies that supplementing caused panic attacks (from Vit d) and horrible muscle aches (from iron supplement). I am now using that dminder app to track my sun from outside since I’m having so many issues supplementing. My last labs were at 42.3ng/mL and my Dr thought this was fantastic. Meanwhile I’m still having so many issues including terrible anxiety and depression. Optimal my ass. I think I’ve been low for years because of constant sunscreen use. 42 to one person is not the same for me when I’ve been deficient for so long.

How much vitamin D should an adult take ?

Mushrooms!? Vitamin D... Indeed,!

Up in Canada, they won’t test my vitamin d, they say it’s too expensive of a test, and have strict guidelines for who they test this for. Do you know how I could get my blood tested for this privately?

Had mine tested.... 14.1ng/mL

I have high hdl and higl lds and low Vit D.