Friday Favorites: The Symptoms of Vitamin B12 Deficiency and Optimal Dosage for Adults

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B12 deficiency is known as “The Great Masquerader.”
This is part of a series on B12. Check out the rest:
• Healthiest Food Sources of Vitamin B12 (nutritionfacts...)
• The Optimal Vitamin B12 Dosage for Kids, Pregnancy, and Seniors (nutritionfacts...)
• The Best Type of Vitamin B12: Cyanocobalamin or Methylcobalamin? (nutritionfacts....)
You can find all of these videos in a digital download here (drgreger.org/c.... Another consequence of B12 deficiency may be an increase in stroke risk:
• Vegetarians and Stroke Risk Factors-Vitamin B12 & Homocysteine? (nutritionfacts...)
• How to Test for Functional Vitamin B12 Deficiency (nutritionfacts....)
• Should Vegetarians Take Creatine to Normalize Homocysteine? (nutritionfacts....)
• The Efficacy and Safety of Creatine for High Homocysteine (nutritionfacts....)
My new recommendations are updated on my Optimum Nutrition Recommendations (nutritionfacts...) page.
New subscribers to our e-newsletter always receive a free gift. Get yours here: nutritionfacts....
Have a question about this video? Leave it in the comment section at nutritionfacts.... and someone on the NutritionFacts.org team will try to answer it.
Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at nutritionfacts.... You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics.
Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution!
-Michael Greger, MD FACLM
Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources: nutritionfacts...
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29 сен 2024

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Комментарии : 306

@NutritionFactsOrg Год назад

Dr. Greger's next webinar is Choosing the Safest and Most Effective Sunscreen on August 18. For more information and to register visit nutritionfacts.org/webinar/choosing-the-safest-and-most-effective-sunscreen/ (CME credits for physicians are available for this webinar, also.). Stay up to date with the latest NF.org news by subscribing to our email list at nutritionfacts.org/subscribe/.

@MdoubleHB Год назад

Humans are frugivores and not omnivores. This is called species-specific diet. It is the most important thing to understand for humanity right now. Cooking destroys the food and most nutrients in it. This should be common knowledge by now. But the masses are still very ignorant and they are constantly distracted by nonsense. It is the reason, why we still live in the dark ages. To have paradise on Earth, humanity must adopt the species-specific diet. For more details: Douglas Graham, John Rose and Loren Lockman

@MdoubleHB Год назад

Vitamin B12 is produced by bacteria in the body and we do not have to consume it. People only have to supplement vitamin B12 in very rare cases. Watch Douglas Graham and Loren Lockman for proper information about vitamin B12 and about health and nutrition in general.

@fellafella1000 Год назад

He'll choose the most dangerous and least effective sun screen then

@darkangelprincess101 Год назад

Its also important to remember because of factory farming animals aren't getting B12 naturally like they use to and meat is also supplemented. So dont be afraid to take the supplement. Eating meat is not necessary

@MakeMeThinkAgain Год назад

As a 71 year old almost vegan, it sounds like upping my daily B12 supplement from 25 mcg to 125 mcg would not be a bad idea.

@cicciomattese Год назад

No!!!!!! Other that animal products aslo no low dose b12 supplements can be carcinogenic "Vitamin B supplementation increased the death rate due to cancer by 5%" but further worse "Vitamin B supplementation might play an important role in cancer incidence if the mean age of the participants is

@MdoubleHB Год назад

@lukasslovik7851 Год назад

Great video. Thank you! I have been vegan for 8 years, but always underestimated b12 supplementation. This video finally helped me understand its importance.

@trapezius77 Год назад

Great video, but you forgot to talk about which type to take, methylcobalamin or cyanocobalamin.

@UnclGee Год назад

Hi. I am surprised he did not state it, but at minute 10 a slide appeared stating that he recommends cyanocobalamin. It his "live Q&A...On February 2" six years ago at minute 10 he explained that methylcobalamin is not shelf stable and you need to take more of it to get the recommended dosage.

@MdoubleHB Год назад

@thomassvensson1523 7 месяцев назад

Methylated B12 is the best

@trapezius77 7 месяцев назад

@@thomassvensson1523 actually, he recommends cyanocobalamin.

@trapezius77 7 месяцев назад

@@MdoubleHB some nutrients are damaged by cooking, while others become more bioavailable after cooking. That alone shows that we need to eat a variety of plant foods, both cooked and uncooked. And some obviously need to be cooked (grains, legumes, and underground starchy vegetables).

@flattlandermontgomery1524 Год назад

I was just searching for info about vitamin B12 yesterday and this video came today!! So cool and thanks for giving the pertinent information it was very helpful.

@yuribudilov5638 10 месяцев назад

which B12 to take, what is the latest? Some B12 activated pills (these dissolve in the mouth) come in a massive 5000 mcg form, can these pills be safely taken, once per week? Thank you.

@Srindal4657 Год назад

This couldnt of come at a better time! Ive been having second thoughts about plant based because of things like b12 in meat. This reminds me i can still be vegan and have b12

@tamcon72 Год назад

@@MdoubleHB Please stop with weird propaganda.

@MdoubleHB Год назад

@@tamcon72 Please stop posting ungrateful and insolent nonsense!

@MdoubleHB Год назад

Vitamin B12 is produced by bacteria in the body. People only have to supplement vitamin B12 in very rare cases, when something is wrong in their body. Watch Douglas Graham and Loren Lockman for proper information about vitamin B12 and about health and nutrition in general.

@healerscreek Год назад

I'd rather supplement than eat poop any day! 😂😂😂

@MdoubleHB Год назад

Imagine still eating animal products in 2023. Diseases and shortened life span guaranteed!

@toninavegan Год назад

In all honesty,this doesn’t make much sense to me. Why 50mcg/d or 2000mcg/w? The difference between 350mcg (7*50) and 2000 is huge. Can someone explain it please? 😅

@angrymurloc7626 6 месяцев назад

Absorption rates diminish the higher you dose

@kindcounselor Год назад

So. I'm 75 years old. Been a vegan for 7 years: what's the recommendation for me? I currently take Solgar sublingual 1000 mcg/day.

@SchalkNeethling Год назад

If I understand correctly from the video, you should take 2000 micrograms (2000 mcg) per week. I believe this is irrespective of age or diet, but it is especially critical if you are over 65 or on a vegan (vegetarian) diet.

@ExtraSubtle Год назад

@@MdoubleHB Our species-specific diet is obligate hyper-carnivore.

@MdoubleHB Год назад

@@ExtraSubtle Of course not. Incomprehensible nonsense.

@shouvikroychoudhury7908 Год назад

@@MdoubleHB We are omnivores.

@MdoubleHB Год назад

Imagine still eating animal products in 2023! Diseases and shortened life span guaranteed.

@ibob148 Год назад

It's good someone is responsible about what supplements you need to be vegan. I saw a recent article of a influencer who died on a extreme diet.

@MdoubleHB Год назад

@cicciomattese Год назад

or what avoid them for example other that animal products aslo not low B12 supplements can be cancerogenc and WITHOUT show benefit in general for risk population "Vitamin B supplementation increased the death rate due to cancer by 5%" but further worse "Vitamin B supplementation might play an important role in cancer incidence if the mean age of the participants is

@MdoubleHB Год назад

@GowthamV07 Год назад

Come to india and see what vegetarians here are eating and they are much better and healthier than non veg people. It's about what you eat. You can say you are vegetarian and eat only a few vegetables dishes. Actually even the vitamins come from a vegetarian source.

@MdoubleHB Год назад

@flattlandermontgomery1524 Год назад

I absolutely love, love, love Indian food!!!!!

@sandeephdas281 Год назад

Indian diet is very unhealthy

@medinabello19 Год назад

Gorillas are smart to know they can get B12 from poop.

@jaska-jalmarixvi5757 Год назад

Is there any downsides to taking too much?

@meegy2 Год назад

Possibly pimples

@dimitrisskar4174 Год назад

just dont take too much

@thesleepinggirl Год назад

Zits and/or expensive pee

@hunterscollectors673 Год назад

B12 is water soluble, so any excess you simply pee out. No worries.

@cicciomattese Год назад

other that animal products aslo not low B12 dose supplements can be cancerogenic and WITHOUT show benefit for general popolation at risk "Vitamin B supplementation increased the death rate due to cancer by 5%" but further worse "Vitamin B supplementation might play an important role in cancer incidence if the mean age of the participants is

@TangoMasterclass Год назад

2000 microgram a week was already the recommendation you gave before, correct?

@brodyrenntcollective Год назад

What about cyanocobalamin vs methylcobalamin?

@AndrewPawley11 Год назад

I love this channel!

@MdoubleHB Год назад

Humans are frugivores and not omnivores. This is called species-specific diet. It is the most important thing to understand for humanity right now. Cooking destroys the food and most nutrients in it. This should be common knowledge by now. But the masses are still very ignorant and they are constantly distracted by nonsense. It is the reason, why we still live in the dark ages! To have paradise on Earth, humanity must adopt the species-specific diet. For more details: Douglas Graham, John Rose and Loren Lockman

@samiryan214 Год назад

Go eat your veggies

@flattlandermontgomery1524 Год назад

@@MdoubleHB In one of Dr. Gregger's videos, he actually proves that humans are frugivores. Unfortunately I don't remember which video it is, but Freelee plays that clip in some of her videos. If you could find that clip, you could include it in your posts and people might be more open to the idea because most vegans trust Dr. Gregger already.

@patriciadenner6669 Год назад

I have pernicious anemia I'm in b12 injections for life

@ikasugami8066 Год назад

Are you following a whole-food plant-based lifestyle?

@revolutionarydefeatism 8 месяцев назад

2:22 I prefer too! 😀

@straightedgeveganbel2453 Год назад

If mine is expired but still causes me to break out does that mean it is probably still good?

@MdoubleHB Год назад

@VeganChiefWarrior Год назад

You should also switch it up through the week and take cyano one time and methyl the other time just to be safe, hopefully one day we wont have to worry about b12, have faith

@nazokashii Год назад

So important. Thank you

@tonynes3577 Год назад

I'm neither a vegetarian or vegan 😮(and healthy) but my partner is a Vegan. With a daily supplement of B12, her lab values came back Higher than normal (a false positive?). She now takes a B12 tablet 3x a week (not everyday ). She seems healthy but I think she needs more of a "whole food" not processed Vegan diet. Maybe we'll repeat her lab values just to see the difference of a 3x a week B12 supplement.

@paulmaxwell8851 Год назад

I worry about those people on a processed vegan diet. Processed food is junk food, and that's going to lead to serious health consequences.

@lalylunssporadicchronicles6404 Год назад

The ones I have are 500 so 4 tablets once a week?!!! And im 60

@niclasnielsen9794 Год назад

Thanks for the reminder! I just realized I'm currently only getting 1000µg a week

@Danuxsy Год назад

only?! I'm taking a 15µg supp each day, that's 105µg per week lol

@MdoubleHB Год назад

Humans are frugivores and not omnivores. This is called species-specific diet. It is the most important thing to understand for humanity right now. Cooking destroys the food and most nutrients in it. This should be common knowledge by now. But the masses are still very ignorant and they are constantly distracted by nonsense. It is the reason, why we still live in the dark ages! To have paradise on Earth, humanity must adopt the species-specific diet. For more details: Douglas Graham, John Rose and Loren Lockman

@MdoubleHB Год назад

@marygatdula2744 Год назад

@MdoubleHB I see you've made this exact comment before, which begs the question: whom are you trying to convince, "humanity" or yourself? And are you seriously able to say that you do not cook any food? I find that extremely hard to believe. If you're eating strictly fruit and most vegetables, okay, I can swallow that, but whole grains? Coffee? Beans and legumes? Come now, seriously?

@dianeladico1769 Год назад

@@Danuxsy Someone wasn't paying attention....you need 50 a day or 2000 a week.

@gabriel65304 Год назад

I didn’t understand him too much. So .. how much needs a vegan of 55 old to take vitamin b12 daily ❓ Thanks

@SchalkNeethling Год назад

Either 50 micrograms (50 mcg) daily or 2000 micrograms (2000 mcg) weekly.

@MdoubleHB Год назад

Humans are frugivores and not omnivores. This is called species-specific diet. It is the most important thing to understand for humanity right now. Cooking destroys the food and most nutrients in it. This should be common knowledge by now. But the masses are still very ignorant and they are constantly distracted by nonsense. It is the reason, why we still live in the dark ages! To have paradise on Earth, humanity must adopt the species-specific diet. For more details: Douglas Graham, John Rose and Loren Lockman

@ibob148 Год назад

@@MdoubleHByou are spamming the same comment. What does that have to do with b12?

@ibob148 Год назад

He didn't say for age 55. @10:03 there is a higher recommendation for 65.

@MdoubleHB Год назад

@@ibob148 Are you in treatment for the mental illness?

@csmrfx Год назад

Good work! 👏

@ronmexico5908 Год назад

I would also recommend supplementing with potassium iodide if eating a pound of cruciferous vegetables a day.

@MdoubleHB Год назад

@dimitrisskar4174 Год назад

ah cuz of the inhibition of absorption? well u can eat way more if it's cooked, roughly 5x if i remember correctly

@ronmexico5908 Год назад

I'm following Dr Brooke Goldner's raw plan. Specifically smoothies. Looks like illness got me not lack of iodine like I originally suspected. Still going to take the iodine in recommend dose

@MdoubleHB Год назад

@BethShearon Год назад

Within months of treatment they made a remarkable recovery even though they showed they had proper levels in the first place -- then our tests are wrong or our idea of optimal levels are wrong or there was something else changed, right? I would not automatically assume throwing B12 at it was what made the improvement and would instead be asking questions to see what else changed

@panes840 Год назад

That's scientific evidence

@MdoubleHB Год назад

@-johnny-deep- Год назад

Why is a singe higher dose per week good enough? Why wouldn't we need some B12 daily? Also, this talks mainly about "single daily dose". Why not multiple smaller doses per day? Finally, why does the recommendation suddenly shoot up to 1000 mcg daily at age 65? I'm 60 and "only" get 100 mcg cyanoco- + 80 mcg methylco- , in two separate supplements roughly 6 hours apart.

@fatrooster7928 Год назад

Fortified nutritional yeast!

@dimitrisskar4174 Год назад

nooch pog

@MdoubleHB Год назад

@jturner123123123 Год назад

I’d like to understand if there is any difference between the sublingual dose recommendation and B12 injections. I’ve tried some popular sublinguals but they don’t seem to have the same absorption as the injections. I am currently on 1000mls per week and curious if I should double that to meet the 2000mcg standard recommendation…thanks for any insight.

@xperience-evolution Год назад

Doctors usually only do injections if you are highly deficient. If you take a hight quality oral B12 you absorb part of it already in the mounth (don't drink before and after so it will mix with your saliva and has time to absorb. If you are not sure if you take enough get your levels checked

@cicciomattese Год назад

@MdoubleHB Год назад

@DarinSBartholomew Год назад

I bought 10,000 iud b12 supplement, does anyone know why someone would want to take that much. I split it in quarters and took 2,500 yesterday. Should I do that then every week or should I take smaller doses everyday?

@deborahwilson7349 Год назад

Is there anyway you could explain this without the annoying hammy overacting

@reality_design Год назад

💕

@MdoubleHB Год назад

@miguelnunez890 Год назад

En realidad al parecer,el ser humano,más que omnívoro,es oportunivoro,ya que come lo que le gusta al paladar.

@patouxb Год назад

50 a day... So the leading b12 supplement (veg-1) is not enough? Odd.

@oraziohall2969 Год назад

@@MdoubleHBjust like that poor fruigivore who died last week of malnutrition? Why dont you go look up how it takes 12 grams of vitamin k1 (plants only), to make 1 gram of k2 (animal foods only) in the human body. You know nothing about nutrition and are a danger to yourself and others

@MdoubleHB Год назад

@@oraziohall2969 Imagine confusing your opinion with reality. Intelligent people do not have opinions. You are obviously not one of them. Very unfortunate for you.

@MdoubleHB Год назад

@@oraziohall2969 Go to the nearest wood chipper. Then jump into it.

@MdoubleHB Год назад

@oraziohall2969 Год назад

@@MdoubleHB you are the one that's confused. What you just said proves that you are totally incapable of seeing any perspective other than your own. Totally closed minded and dogmatic, when you get confronted with evidence that goes against your belief you ignore it and become more steadfast in that belief. no one should give any credit to what you're saying because you are unable to prove anyone wrong who goes against it. You simply call it their opinion and assume it's wrong. Ironically this is all based off of your own personal opinions. Its actually pretty interesting!

@TheDaftspy Год назад

Can you do a video on Bamboo Fiber tableware, storage and cookware?

@fmcdomer Год назад

GOD PUT ADAM AND EVE on a plant based diet

@Yasqo Год назад

Religion has no place in science, especially in nutrition. If you want to eat like Adam and Eve, go see how that works out for you, maybe you’ll learn your lesson the hard way.

@fmcdomer Год назад

@@Yasqo sorry I'm not religious

@user-gi2mn5yf5j Год назад

@NutritionFactsOrg thanks for the update I was just considering switching to daily doses this is great! Also is there a limit to how much B12 we should get? I was considering farming my own water lentils aka duckweed for my B12 instead of supplements which is segmenting into a VERY LARGE market of all sorts of applications so expect to get this question a lot soon because I had read that duckweed is actually a plant-based source of B12, is that true do you think or does the duckweed just not get cleaned off before it hits the market?

@MdoubleHB Год назад

@paulmaxwell8851 Год назад

@@MdoubleHB "Cooking destroys the food and most nutrients in it" is not correct. Cooking, especially overcooking as my mother does, indeed destroys some nutrients. But cooking releases some nutrients so they can be bio-available. It it thought that the discovery of cooking and the resulting improvements to human health led to our larger brains and success as a species.

@paulmaxwell8851 Год назад

MdoubleHB, you've repeated the same message over and over and over here. Thankfully, I see you're being ignored. Please, get help. You're obviously battling with inner demons.

@MdoubleHB Год назад

@@paulmaxwell8851 Are you in treatment for the mental illness?

@MdoubleHB Год назад

@@paulmaxwell8851 People with intelligence express utmost gratitude for my extremely valuable and life-saving posts. You are obviously not one of them. Very unfortunate for you.

@chrislonghurst2379 Год назад

I do 2400 ug a day better you oral spray

@EmielRoumen Год назад

Any lab tested supplement recommendations that can be ordered by Europeans?

@MdoubleHB Год назад

@EmielRoumen Год назад

@@MdoubleHB thanks for the reply. It does not answer my question though.

@MdoubleHB Год назад

@@EmielRoumen For an incomprehensible reason my comment about vitamin B12 is only visible, when you order the comments by "Newest first". So do that now and read it.

@EmielRoumen Год назад

@@MdoubleHB I read that comment prior to my post. I need to supplement B12 (blood test results), hence my question about lab tested B12 supplements that are affordable and easy to order in Europe.

@paulmaxwell8851 Год назад

Interesting video on a very important subject. I have one observation to make: it seems that doctors believe we're all exactly the same, with bodies that behave in precisely the same manner. This is not true. My wife was told she needed 2.4 mcg B12 daily until she hit age 65. Suddenly, on her birthday, her doctor told her that her body now needed 1000 mcg per day! Something had happened overnight, apparently, that dramatically reduced her body's ability to absorb this vitamin (no, no lab tests had been done). I'm sure you see the nonsensical nature of this belief that the human body behaves like this in a clockwork manner. My wife did up her daily intake, but only to 250 mcg, because high doses taken without clear medical indication can lead to blood clots.

@StanDupp6371 Год назад

You could have 1 ounce of clams per week for 40 calories and get 1000% RDA of B12 that is absorbable in the proper way. This way you do not have to rely on an unknown unregulated supplement in a bottle made in a factory you never visited, that the body may view as an unknown foreign enemy that it does not recognize or welcome.

@ToniInSussex Год назад

If y'all don't want to become irritated or see bullying, I suggest y'all don't read the comments today. 😢

@marygatdula2744 Год назад

FACT!!! They definitely got me on my soap box! I think I must quit now. LOL

@ToniInSussex Год назад

@@marygatdula2744 There's at least one insane person on there. 🤣😅🤣😅🤣😅🤣 Geeeeeeeesh. How funny. I understand the soap box, but it doesn't seem we can all be civil on her... for Dr. Greger, I mean, can ya get any nicer? Lolol wowzer.

@carolinetrapp4799 Год назад

Great video. One more category of people who should supplement: people who take metformin or omeprazole

@MdoubleHB Год назад

@skpjoecoursegold366 Год назад

i'll stick with the 2500mcg, l have, per week.

@cicciomattese Год назад

@tahamedaghri Год назад

i laughed out loud at 02:16 hhhh

@rjb1122 Год назад

He didn't state it, but if you read the Optimum Nutrition Recommendations at minute 10:05 in the video, it says, "Those over 65 years of age should take at least 1,000 mcg (ug) cyanocobalamin every day." That's a LOT different than taking 50 micrograms daily. I think that should have been stated and explained........That seems like a very high daily dose, especially considering the RDA of 2.4 micrograms per day. I was taking that dose and my primary care doc asked me to stop taking B12, because my serum B12 was very high, even though I did not take it for several days prior to the blood test.

@cicciomattese Год назад

good stop. other that animal products aslo not low dose B12 supplements Can be cancerogenic and WITHOUT show benefit "Vitamin B supplementation increased the death rate due to cancer by 5%" but further worse "Vitamin B supplementation might play an important role in cancer incidence if the mean age of the participants is

@linaraepaksa Год назад

I've been taking 1,000 mcg daily, in my 30's. i guess i figured that habit will be good to build now and carry into my 60's, and beyond (hopefully). it's been working for me as a vegan for more than a few years.

@cicciomattese Год назад

@@linaraepaksa read above, other that animal products aslo megadose B12 supplements take for long time can increase cancer incidence and without show benefit in take for prevention!

@stephaniel3378 Год назад

What if u ate some dirt every day would that give u B12?

@michelangelobuonarroti916 Год назад

It might. Best to have your dirt asayed for potency.

@Yasqo Год назад

That’s one of the ways ex vegans are born. Once you get an infection or a deficiency, eating dirt or poo, you will blame the diet for it, when you could have just taken a supplement and/or consumed some bivalves.

@Adam-mcg-uk Год назад

Could someone please address the claim that those with MTHFR mutations don't use the cyano form well and that. The methyl version is said to be better for those people??

@MdoubleHB Год назад

Humans are frugivores and not omnivores. This is called species-specific diet. It is the most important thing to understand for humanity right now. Cooking destroys the food and most nutrients in it. This should be common knowledge by now. But the masses are still very ignorant and they are constantly distracted by nonsense. It is the reason, why we still live in the dark ages! To have paradise on Earth, humanity must adopt the species-specific diet. For more details: Douglas Graham, John Rose and Loren Lockman

@oraziohall2969 Год назад

They wont because that would go against there " everyone should eat plant based" theory. Obviously as humans we need b12 from animals, cyano is the version in vegan supplements and it contains cyanide. Never have we, as humans, needed supplements until now. In a time where the amount of saturated fats in the American diet has gone down dramatically, and rates of chronic illness have gone up dramatically, how could anyone believe these studies? They are 100% paid for by bias vegans and processed food corporations.

@MdoubleHB Год назад

@clc7378 Год назад

Thank You!

@larrymaloney877 Год назад

Great video - but I'm still confused. My blood tests showed I had a huge amount of B-12 'stored in my liver." So I stopped supplementing for six months and restarted but "only" taking one 5000 mcg capsule each Monday. OK, so I can reduce that to 2,000 mcg, but what's the harm in too much B-12?

@dimitrisskar4174 Год назад

dont stop it for half a year wth bruh

@larrymaloney877 Год назад

@@dimitrisskar4174 As Dr. Greger said, it takes a while to show symptoms of insufficient B-12. Testing showed I had a huge amount stored in my liver - so I might have coasted without any B-12 supplementation for a year, or longer. But after six months I resumed supplementing B-12, but only once a week instead of daily (as I previously did.) It would be interesting to test again and learn my present B-12 level. My question is, "will excess B-12 cause any problems?"

@trapezius77 Год назад

It's a simple Google search to find side effects of taking too much B12 and how much is too much. All vitamins have harmful side effects if you take too much, but you also have to check how much is too much for each vitamin.

@dimitrisskar4174 Год назад

@@larrymaloney877 i was talking in the logic of better safe than sorry

@larrymaloney877 Год назад

@@trapezius77 not so "simple." A Google search also shows how harmful a whole food, plant-based diet is. Another simple search shows the benefits of KETO. I prefer to learn here, from Dr. Greger.

@shirleycottle2047 11 месяцев назад

Can it cause stomache problems

@hypnohope Год назад

My husband's blood test results showed his B-12 to be over 7,000, so the doctor has taken him off of the supplement for now. He is experiencing balance issues, numbness in his legs, and dizziness, so the testing was to try to determine what might be causing these things. She doesn't think that the high B-12 is the issue. Does anyone know what the effects of way too much B-12 can be?

@paulmaxwell8851 Год назад

Well, my wife once had deep vein thromboses (blood clots) after minor foot surgery. We were warned that excess B12 can lead to blood clots, so more is not better. How much is too much? I'm not sure anyone can say.

@me888ize 9 месяцев назад

My doctor put me on 1000 daily 1 y after blood test showed 14000 , meaning 20x more than normal level he took me off and I am worried I am supposed to take a blood test in 3 m

@acu-strikegolf7915 Год назад

Another RU-vidr who puts up a description and then makes you listen to him talk because he likes to hear himself talk before he will ever tell you what The answer is to the description.. Do you enjoy the sound of your own voice? I ended up clickng him off I never got the answer.

@Khorotovich Год назад

Lol.same here. Trying to hard to be funny to give the pill.

@GregMeadMaker 9 месяцев назад

You click off, and YOU are the loser. Dr Michael Greger's expertise and efforts on many levels helped millions of people improve their health and quality of life. . . including mine. He has my utmost respect and gratitude.

@belindapotts4879 Год назад

What are the foods again that can be eaten on a regular basis to get those recommended levels. Thanks

@StanDupp6371 Год назад

You could have about 1 ounce or around 40 calories of clams per week and you would get about 1000% RDA of B12.

@christianthomsen7046 Год назад

@@MdoubleHB humans are omnivores. This means that we can eat and digest both plant and animal matter. We have the anatomical features of both herbivores and carnivores, such as flat molars for grinding plants and sharp canines for tearing meat. We also have a digestive system that is capable of breaking down both plant and animal proteins. We thrive best by eating what our ancestors ate that includes meat.

@untaintedwheelchair Год назад

@christianthomsen7046 our ancestors died by 30-50 from what are now known as preventable diseases, usually the form of different cardiovascular and degenerative diseases. Old ways aren't always superior. And no, we don't have sharp canines.

@MdoubleHB Год назад

Imagine still eating animal products in 2023! Diseases and shortened life span guaranteed.

@MdoubleHB Год назад

Cooked food caused and maintains the fall of mankind! Raw vegan nutrition is the salvation of humanity.

@stephaddiction Год назад

Too much b12 breaks me out. How do I know how much to spray in the mouth😢

@vela-6 Год назад

I switched to a supplement that doesn't have cyanocobalamin. Mine has methylcobalamin & hydroxocobalamin. You could do methycobalamin + adenosylcobalamin. Or you could do hydroxocobalamin alone. Cyanocobalamin turns into cyanide in your body and gives you acne. The others are natural and don't have this problem, thus they don't cause acne. adenosylcobalamin makes me jittery and nervous, so I don't like it personally. Anyway, that's my experience, I'm not a doctor or making medical advice, but I hope the info I provided can be helpful in your research :)

@oraziohall2969 Год назад

Red meat, dairy, eggs, fish, all what we need to survive, no one ever got enough b12 from water that is ridiculous if you measure b12 amounts in fresh water steams you would need so many gallons you'd die

@oraziohall2969 Год назад

@@mountainstream8351 even if you eat nothing but dirty potatoes your still only eating like and ounce of dirt day. I doubt that's enough and unless you cultivate potatoes, that's not even possible to do. So what did humans eat dirty fruit? Did they rub dirt on the fruit? No they ate primarily red meat and were healthier than your avarage person today by far

@MdoubleHB Год назад

@d.rabbitwhite Год назад

@@oraziohall2969 Damn I must be dead after 30 years of no flesh (meat was a word that meant all food), dairy, eggs (chicken menstruation, ewww). doc and folks think I present about 10 years younger than I am. Kid has been vegan from birth and is not dead and is not unhealthy (according to doc and bloodwork). There are also thousands upon thousands, over 20,000 - of edible plants and currently we consume very little of the number. Recently it has been found that duck weed has b-12. The b-12 is a bacteria it was in the ground and in the water.

@Barnaclebeard Год назад

Since people who aren't on a plant-based diet are also found "in the wild" to be deficient in B-12, why only recommend the supplement for people on a plant-based diet?

@sudd3660 Год назад

do not think he replies to comments. but i would say that why waste stuff on the problem people. they have to quit eating animals product first and foremost.

@kenjohnson6101 10 месяцев назад

50mcg/day? The Bragg nutritional yeast label says 1 serving (2 Tbs) contains 15mcg B12, which is supposedly 630% of the Daily Value. To get 50mcg I would need to eat over 6 Tbs per day. That doesn't seem right.

@abithegreat1707 9 месяцев назад

Can a single dose of 5000 be taken every other week or should it be weekly or daily?

@HappilyVeganSince Год назад

The subject is confusing. More and more videos krep coming out on it: i thought 50mcg per day or 2500/2000 per week, or 1000mcg per day over age 65. I am in that age bracket: should i take 2500 per week or 1000 per day?

@samiryan214 Год назад

I solved it, I eat tuna & sardines.

@cicciomattese Год назад

animal products are harmfull and devaste enviromental other that full mercury

@kekethetoad 10 месяцев назад

Sometimes the history lessons and pontification insights are fun but sometimes they get in the way of people seeing the relevant data and actual recommendations. 🤦