How much Vitamin B12 do you need?

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  • čas přidán 22. 08. 2024
  • It is fairly easy to quickly reach the recommended dietary allowance (RDA), which is 2.4 mcg for adults 19 and over (and higher for pregnant and breastfeeding women)-especially if you are adding supplements to your diet. However, you don’t need to worry about surpassing the RDA because with a water-soluble vitamin such as B12, your body uses what it needs, and the rest is flushed out through your urine.
    Is 2.4 mcg really enough? It’s not clear, with some studies showing that up to 10 mcg per day may be needed to maintain maximal plasma B12 concentrations. But do we need to maintain high B12 plasma levels to maintain health? That’s a question that we need to answer still. Nevertheless, what does 2 or 10 mcg look like in food? 1 large egg gets you 0.5 mcg, a 3 oz serving of farmed Atlantic salmon gets you 2.4 mcg, the same serving of sockeye salmon gets you 3.8 mcg, and a 4 oz serving of beef liver gets you a whopping 67 mcg. The upper limit for B12 intake is up to 1000 mcg per day, which would be in a supplement, so it’s virtually impossible to overeat B12 in food. If you are supplementing, consult your healthcare provider and read the label to ensure you aren’t getting more than 1000 mcg per day.
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Komentáře • 11

  • @HappyTexan52
    @HappyTexan52 Před 11 měsíci +6

    my doctor told me to start taking 5000 mcg daily since 2015! Since then I have seen different doctors and none of them have told me to stop taking it or to take less. I'm worried they haven't been honest with me.

    • @crimson.light.17
      @crimson.light.17 Před 10 měsíci +2

      Could you describe a little bit about your condition?
      I really need to repair my nerves, so I'm experimenting with a few of the B vitamins, mainly B1 and B12. It's going to take a really long time to learn about all of this stuff.

  • @MrGabsol
    @MrGabsol Před 2 lety +1

    This is good info… nobody really knows how much to take and why it’s important! Everybody pushes vitamins without explaining.. how much is needed and why it’s important!!

  • @funhistory
    @funhistory Před 2 lety +5

    Please elaborate (here or in a separate video) on remarks near the end about deficiencies being masked "for years". Context: I'm eating healthy/nutritious now, but how long till I can know for sure current problems are not being masked by years of consuming unhealthy stuff (fastfood, preservatives, etc.). Thanks!

  • @carolbarnes7520
    @carolbarnes7520 Před 9 měsíci +2

    If we have a vitamin B12 test what level should cause concern and indicate a need for vitamin B12 ingections? I take 2 g Metformin per day and have been taking B12 tablets for 2 years as I read that Metformin blocked efficient absorption. Carol UK

  • @joe241able
    @joe241able Před rokem +6

    i take 1000 mcg a day

  • @keerthidelwatta2785
    @keerthidelwatta2785 Před 11 měsíci +1

    How to increasing intrinsic factor?

  • @laniesider2586
    @laniesider2586 Před rokem

    How to reduce b12