vitamin b12

No summary available for this substance.

Vitamin B12

Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is essential for neurological function and the production of red blood cells. It is involved in the metabolism of every cell of the human body, particularly affecting DNA synthesis and regulation, as well as fatty acid and amino acid metabolism.

Category
Vitamin
Molecular Formula
C63H88CoN14O14P
Mechanism of Action
Vitamin B12 operates as a coenzyme, contributing to methylation reactions that influence neurological function and blood formation. It also aids in the conversion of homocysteine to methionine, a process crucial for DNA and protein synthesis.
Evidence Grade
A

Other Names

  • Cobalamin
  • Cyanocobalamin
  • Methylcobalamin
  • Hydroxocobalamin

Primary Benefits

  • Supports neurological function
  • Aids red blood cell formation
  • Helps with energy production
  • Improves mood and symptoms of depression

Recommended Dosage

Daily Intake 2.4 micrograms for adults
Upper Limit No upper intake level has been established

Side Effects

  • Headache
  • Itching
  • Swelling
  • Nervousness
  • Involuntary movements

Precautions

  • People with pernicious anemia or other forms of anemia should consult with a doctor
  • Those with gastrointestinal disorders may have trouble absorbing Vitamin B12
  • Vegans and vegetarians may need supplementation due to dietary restrictions

Interactions

  • Certain medications for diabetes, stomach acid, and those treating gastroesophageal reflux disease (GERD) may interfere with Vitamin B12 absorption

Key References

  • Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: The National Academies Press; 1998.
  • Lachner C, Steinle NI, Regenold WT. The neuropsychiatry of vitamin B12 deficiency in elderly patients. J Neuropsychiatry Clin Neurosci. 2012;24(1):5-15.
Axel Montagne, PhD, on Solving Alzheimer’s and Dementia with Blood-Brain Barrier Repair
vitamin b12 1:31:41 0
“you know in people with that had high homocysteine um when they were treated with a B6 B12 folate sort of concoction to help lower their homocysteine it improved their cognition and also a Microsoft blood-brain barrier”

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How to Optimize Female Hormone Health for Vitality & Longevity | Dr. Sara Gottfried
Optimizing Women's Health: Hormones, Nutrition, Exercise, and Genetics Insights 38:06 0
“I'm also looking at some of the key vitamins, especially the B vitamin range because as you probably know if you've got particular genetic polymorphisms you might be less likely to be absorbing the right level of vitamin B9 folate, vitamin B12, etc.”

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276 ‒ Special episode: Peter on longevity, supplements, protein, fasting, apoB, statins, & more
Longevity, Health Tools, Proactive Management: Nutrition, Exercise, Supplements, Genetic Insights 31:01 0
“I take methylfolate and methyl B12... basically I take these to keep homocysteine below nine and that for me just means just taking one a day.”

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Leading Cardiologist: Your Doctor Is WRONG About Cholesterol | Dr. William Davis
Challenging Health Myths: Nutrition, Heart Health, and Gut Microbiome Insights 1:27:34 0
“modern people have disrupted their gastrointestinal microbiome. Well, do microbes produce vitamins? They do.”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 24:44 0
“things like mineral salts um um amino acids um nutrients that you would find in nutrient-dense soils you know you wouldn't believe the physiologic impact you can have on people just by putting them on a complex of B vitamins vitamin B12 some methylfolate um which are which are basic core nutrients required for the process of methylation and when they're deficient they become like they Hub the wheel they they they have all of these Spokes and people think that they have an autoimmune disease and they have a mental illness and they have a weight gain issue and they have sleep disruption and they have anxiety or they have ADD or ADHD and the truth is they very often have nutrient deficiencies”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 35:03 0
“we would look at hor hormone balance and then we would look at certain nutrient deficiencies um vitamin D3 B12”

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The Shady Reality of the $Billion Supplement Industry | The Dr. Hyman Show
Understanding Supplement Quality, Nutrition Myths, and Modern Health Realities 38:24 0
“We check your magnesium level. We check your level of B vitamins like homocysteine and methylmalonic acid which measure B12, folate, B6 effectiveness. We measure omega-3s. We measure vitamin D. We can measure zinc. We can measure copper. We can measure iodine.”

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How To REVERSE YOUR AGE In 40 Days With WATER FASTING | Dr. Alan Goldhamer
Optimize health and reverse aging with fasting and nutrition tips 43:46 0
“if you ate just 2,000 calories we'll just assume for a second that you were the average guy weren't working out didn't use your brain that much and you only needed 2,000 calories a day just which is the RDA average... if you ate two thousand calories of just say brown rice and broccoli that was it, your entire diet, you would get all the vitamins minerals, protein essential amino acids you get about 80 grams of protein out of that.”

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How To REVERSE YOUR AGE In 40 Days With WATER FASTING | Dr. Alan Goldhamer
Optimize health and reverse aging with fasting and nutrition tips 44:34 0
“you do need to get a source of B12 it only comes from bacteria and we use recommend a thousand micrograms of methylcobalamin a day and that'll meet virtually everybody's needs.”

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Biomarkers For Slowing Eye Aging, Featuring ‪Joseph J. Allen
Optimize Eye Health: Insights on Aging and Preventative Measures 30:33 0
“homocyine amino acid used for producing various proteins in the body um various certain vitamin deficiencies right vitamin B6 vitamin B12 and then folic acid all play roles in basically breaking down homocyine and so if somebody's deficient in one of those like vitamin B12 we tend to have we don't absorb as well as we get older and so that may play a role in this”

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Brain Expert: These Common Habits SHRINK Your Brain – Alzheimer’s, Fatigue & Lost Joy | Daniel Amen
How Everyday Habits Impact Brain Health and Mental Well-being 6:51 0
“What we did was a multiple vitamin with high doses of B6, B12, and folate. Um, high dose of omega-3 fatty acids and a brain boost that works in six different ways.”

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Dr. Peter Attia: Supplements for Longevity & Their Efficacy
Supplements, Lifestyle, and Strategies for Longevity and Optimal Health 2:15:57 0
“we know that if you take methyl folate and uh uh methyl B12 you're going to lower homocysteine that's abundantly clear so the the thinking is that that might actually lower um adma sdma and raise nitri oxide synthes again relatively low cost lowrisk you know thing to take at modest doses”

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How to Exercise & Eat for Optimal Health & Longevity | Dr. Gabrielle Lyon
Optimizing Health and Longevity Through Nutrition, Exercise, and Supplements 35:38 0
“when I say a 70% plant-based diet I'm talking about refined carbohydrates, sugars, ref oils and when we think about it so that 70% of our diet comes from that where 30% comes from animal-based proteins which contain a ton of nutrients like bioavailable zinc and selenium B12.”

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