Vitamin D3

Vitamin D3 is often highlighted for its critical role in maintaining bone health, as it aids in calcium absorption. It is also vital for various aspects of brain and body health, acting as a steroid hormone that influences cellular functions. Despite its importance, a significant portion of the population, particularly in the U.S., has inadequate levels of vitamin D, largely due to insufficient sun exposure.

Vitamin D3 is preferred over D2 for supplementation because it is more readily utilized by the body. Typical recommendations for supplementation suggest doses around 4,000 IUs per day, with some individuals requiring more due to metabolic differences. While it is difficult to reach toxic levels, excessive intake can lead to hypercalcemia, so moderation is advised.

Controversy exists around the effectiveness of vitamin D supplementation in addressing chronic metabolic diseases, as evidence suggests it has not resolved these conditions despite associations with deficiency. Additionally, personal anecdotes indicate variability in how individuals respond to supplementation.

Overall, maintaining adequate vitamin D levels is crucial, and regular monitoring is recommended. Individuals should aim for levels between 40 to 60 nanograms per milliliter. Even with supplementation, sun exposure remains important for optimal vitamin D synthesis.

For those considering vitamin D3 supplementation, it is advisable to consult with a healthcare provider to tailor the dosage to individual needs and ensure it complements a balanced lifestyle.

Vitamin D3

Vitamin D3, also known as cholecalciferol, is a type of vitamin D which is produced by the skin in response to sunlight exposure. It can also be consumed in the diet or in supplement form. It's essential for bone health, as it helps the body absorb calcium and phosphorus from the diet. Its deficiency may lead to conditions such as rickets in children or osteomalacia in adults.

Category
Vitamin
Molecular Formula
C27H44O
Mechanism of Action
Vitamin D3 is converted in the liver to its active form, calcitriol, which then functions as a hormone, regulating the concentration of calcium and phosphate in the bloodstream and promoting healthy growth and remodeling of bone.
Evidence Grade
A

Other Names

  • Cholecalciferol
  • Colecalciferol

Primary Benefits

  • Supports bone health
  • Boosts immune function
  • Promotes calcium absorption

Recommended Dosage

Adults 600-800 IU per day
Children 400-600 IU per day

Side Effects

  • Nausea
  • Vomiting
  • Excess calcium in blood
  • Poor appetite
  • Constipation

Precautions

  • Those with hypercalcemia or kidney disease should consult a healthcare provider before taking Vitamin D3 supplements.
  • Pregnant or breastfeeding women should consult a healthcare provider before taking Vitamin D3 supplements.

Interactions

  • Steroid medications
  • Weight loss drugs
  • Cholesterol-lowering drugs

Key References

  • Holick MF. Vitamin D deficiency. N Engl J Med. 2007;357(3):266-281.
  • Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium; Ross AC, Taylor CL, Yaktine AL, et al., editors. Dietary Reference Intakes for Calcium and Vitamin D. Washington (DC): National Academies Press (US); 2011.
Female-Specific Exercise & Nutrition for Health, Performance & Longevity | Dr. Stacy Sims
Optimizing Women's Wellness Through Nutrition, Exercise, and Hormone Health 1:54:33 0
“vitamin D3 really important especially um when we're looking at all the information that's coming out from cardiovascular muscle brain everything that goes with vitamin D also with iron so vitamin D is really important for absorbing and maintaining iron stores”

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Peptide & Hormone Therapies for Health, Performance & Longevity | Dr. Craig Koniver
Exploring Peptides, Hormones, and Therapies for Health and Wellness 39:34 0
“if you'd like to try ag1 you can go to drink a1.com huberman to claim a special offer”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 23:28 0
“Vitamin D deficiency is really some sort of accelerated aging? Is that's what going on here in people?”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 24:27 0
“And it seems like vitamin D somehow is able to elicit the endogenous defense system, detoxification systems. So it's turning on those systems.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 24:40 0
“It requires Nrf2 in the worm to see the beneficial effects on the proteome.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 25:04 0
“You could see how an effect on a global process like protein aggregation which is associated with lots of different diseases could explain perhaps why vitamin D deficiency is associated with neurological disease and other diseases.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 26:52 0
“We know if we feed the worms D3, they're able to make the 1,25 vitamin D.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 28:01 0
“Any metabolite that can be converted into the active form is beneficial.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 29:41 0
“People that had blood levels between 40 and 60 nanograms per milliliter had the lowest all-cause mortality compared to those that, you know, had lower vitamin D levels or even really, really high ones.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 30:22 0
“I think that it's absolutely probably regulating the aging process and this whole protein aggregation angle is new to me.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 30:44 0
“And I'm not an MD and I am not prescribing vitamin D for anyone, although it's likely that if you are deficient, you really would benefit from coming up into a sensible range.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 31:14 0
“It's probably almost completely harmless to be taking an additional 1,000 units a day on top of whatever is in your diet, but really talk to your doctor about it.”

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Gordon Lithgow, Ph.D. on Protein Aggregation, Iron Overload & the Search for Longevity Compounds
Investigating mechanisms for extending healthspan and preventing age-related degeneration. 31:22 0
“You know, they should get their D levels measured before and after supplementation. Both. I mean, it's not a hard test to do.”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:07:31 0
“I wonder if avoiding vitamin D deficiency also becomes one of those important lifestyle factors because uh you know in some cases obviously vitamin D also plays a own role in bone metabolism right but independent of that also just looking at the cross Talk of the genes that vitamin D and estrogen regulate and they're like they're both and the the response elements are they're different but there's somewhat I'm looking at that it's like oh I wonder if there's like that seems like you might be able to compensate”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:06:20 0
“what do we know about the relationship between call it naturally acquired vitamin D through sunlight versus supplementation of vitamin D uh exogenously through you know a supplement”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:07:13 0
“the actual 125 hydroxy vitamin D which is the active steroid hormone it it's the same yeah um now with respect to like you know your body regulates how much vitamin D3 is converted or is released into bloodstream and converted into 25 hydroxy vitamin D at the level of sun exposure”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:08:26 0
“supplementing above that would be a bad idea it yeah like and so that's why looking at measuring”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:11:49 0
“I'm always kind of like hovering around 50 60 but I'm like should I be at 80 yeah you know and I don't know um so it's always like okay well air on the side of caution you know air on the side of caution certainly avoiding deficiency yeah um but even with respect to like all these genes I'm talking about you know like what if there's some cross talk with that there is cross talk but what if there's some way that um having a level of vitamin D you know 50 50 or 60 NRS per Mill does help alleviate some of the effects of having no estrogen you know like we don't really know.”

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Dr. Peter Attia on Mastering Longevity – Insights on Cancer Prevention, Heart Disease, and Aging
Proactive Health Strategies: Preventing Chronic Conditions Through Lifestyle Choices 3:12:26 0
“estrogen can actually compensate for um vitamin D deficiency in some cases with certain genes too and it goes both ways.”

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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 29:04 0
“I take vitamin D... I take 5000 IU of vitamin D.”

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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 39:20 0
“I don't think I was taking a baby aspirin a year ago I think again that's something I've kind of done on and off over periods of time and probably the same with vitamin D.”

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Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients
Understanding Nutritional Essentials for Optimal Health and Longevity 0:33 0
“Most recently, Bruce and I have co-authored two papers together, one that was published last February on the role vitamin D plays in serotonin production and how this relates to autism.”

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Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients
Understanding Nutritional Essentials for Optimal Health and Longevity 0:39 0
“And the second paper which was just recently accepted for publication is on vitamin D and the marine omega-3 fatty acids, EPA and DHA, and what role they play in ADHD, bipolar disorder, schizophrenia, and impulsive behavior.”

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Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients
Understanding Nutritional Essentials for Optimal Health and Longevity 33:39 0
“And if you put an African American in Chicago, they're in deep trouble because in a northern latitude, if you have a dark skin, you're not making your vitamin D, and you need to do something about it.”

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Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients
Understanding Nutritional Essentials for Optimal Health and Longevity 39:52 0
“Plus, genetics is really important, too. So if you have a polymorphism, an alternate form of some gene, that means that you need more magnesium than the next fellow or more vitamin D than the next fellow, then you'll wanna know that.”

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Bruce Ames on Triage Theory, Longevity Vitamins & Micronutrients
Understanding Nutritional Essentials for Optimal Health and Longevity 42:30 0
“But I'm not out in the sun, both for a genetic reason and because I'm in the lab all the time, so I make sure to take a vitamin D pill.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 3:21 0
“around 70% of the population does not meet the requirement for vitamin D around 60% does not meet the requirement for vitamin E 45% does not meet the requirement for magnesium.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 18:10 0
“so taking around 1,000 IUS of vitamin D per day can raise blood serum levels by about five nanograms per milliliter.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 18:39 0
“too much vitamin D is also not good because vitamin D also allows you to absorb more dietary calcium and as I mentioned calcium can precipitate and form plaques in the vascular system.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 19:14 0
“the primary source of vitamin D is UVB radiation from the Sun UVB radiation hits our skin it converts something called 7 dehydro cholesterol in our skin to vitamin D3.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 21:59 0
“it binds to the vitamin D receptor this causes the vitamin D receptor to heterodon receptor and this complex then goes inside the nucleus of the cell where the DNA is and it recognizes a little Telltale sequence in the DNA called a vitamin D response element”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 23:02 0
“the gene that encodes for the enzyme tryptophan hydroxylase which is the rate limiting enzyme in the conversion of tryptophan into serotonin has a vitamin D response element in it”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 29:11 0
“it's possible that if a mother is deficient in vitamin D and she's carrying a female child there's a backup system because that estrogen is able to activate the same gene that vitamin D activates but if it's a male fetus they don't have that backup system and they may be more susceptible to having the low serotonin which would then affect the brain development and um possibly lead to autistic like behaviors”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 32:58 0
“this all really leads to a very simple solution that is relevant for prevention and that is one vitamin D levels should be measured prenatally I mean this should be part of a prenatal care package where much like folic acid folic acids emphasized to prevent neuro um tube defects well vitamin D levels should be measured and the the levels of vitamin D should be within a certain range”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 33:39 0
“if you have a woman that's severely deficient in vitamin D less than 20 nanograms per Mill and you only give her 400 IUS you're not even going to raise her blood levels by 2 and a half nanograms so it's just not enough”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 34:33 0
“another study recently that elaborates on my first study and talks about the role of vitamin D in producing serotonin in the brain and activating the enzyme in the brain and also how omega-3 fatty acids specifically the Marine omega-3 fatty acids icosapent anuic acid EPA and doah hexenoic acid DHA also regulate the serotonin system and how this is relevant for brain function and brain dysfunction”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 37:47 0
“in addition to vitamin D omega-3 the Marine omega-3 fatty acids also regulate serotonin function so tryptophan gets converted into serotonin by the enzyme tph2 which is What vitamin D regulates”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 40:18 0
“under conditions of low vitamin D which we know is ubiquitous at least in the United States and also it's globally uh people are you know they're they're not getting enough vitamin D for the reasons I mentioned but also uh fish consumption is down and people don't eat enough fish and are not getting enough omega-3 fatty acids”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 43:36 0
“Vitamin D is absorbed better with fat, it's a fat-soluble vitamin and vitamin D3 is better than vitamin D2.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 44:08 0
“The higher the vitamin D dose the more bioavailable it is.”

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Rhonda Patrick at Orthomolecular Medicine Congress in Bussum, Netherlands (Keynote Oct. 3rd, 2015)
Optimizing Health Through Micronutrients: Key Role in Disease Prevention 44:50 0
“You won't know also if they have a polymorphism that changes the conversion of D3 into 25 hydroxy.”

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How to Improve Your Mobility, Posture & Flexibility | Dr. Kelly Starrett
Optimize Health Through Exercise, Nutrition, and Recovery for Better Well-being 3:16:53 0
“there's some early research and again not my expertise that I've heard of read about talked to people about that vitamin D creatine and omegas might help attenuate symptoms of concussion if they they get hit right so post pre so those things are on Caroline she gets creatine every day she gets an Omega every day and she gets vitamin D”

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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 15:51 0
“Let's go over those four supplements again. Vitamin D, magnesium, iodine. What was the fourth one? And omega-3 fatty acids.”

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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 56:21 0
“Ideally, you and I would spend our days outside in a Speedo bathing suit and get lots of vitamin D.”

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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 1:00:43 0
“When you get vitamin D, it enhances dramatically intestinal absorption of vitamin D.”

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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 1:25:00 0
“There's a lot of misinterpretation. One argument, for instance, is that if you take vitamin D without K2, you will calcify your arteries. That's utter nonsense. There's no basis for that.”

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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 1:36:49 0
“What if your score is 700, but you did vitamin D and eliminate wheat and grains and sugars, eliminate small 'LDL' particles, and got omega-3s at a healthy level, got iodine, your thyroid, and address your SIBO”

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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 1:38:39 0
“but it has to do with things like wheat, grain, sugar avoidance, vitamin D, all these things you're familiar with omega-3 fatty acid, iodine addressing your, your bowel floor.”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 11:53 0
“you could see their diet their lifestyle alcohol consumption the medications that they were on and you could actually follow certain clinical deficiencies like vitamin D3 was a big one for us we would see clinical deficiencies in vitamin D3 and I'm talking like singled digit low double-digit D3 not not B.”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 19:29 0
“had they taken 5 or 9,000 IUS 10,000 IUS of vitamin D3 daily with a little K2 um and applied a load to their bones um that trajectory would have been completely different”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 20:00 0
“you would get more likely to end up in the hospital and die if you had low vitamin D and from the Israeli data if your vitam was over 50 and the reference range is 20 to 30 depending on the lab if it was over 50 there was nobody who died”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 33:21 0
“if you're not getting sunlight you need to be supplementing with you know vitamin D3”

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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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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 1:12:15 0
“vitamins which is very important for these Pathways like vitamin D, iron, zinc I mean it's just it's staggering how these are so common and they're affecting so much of our biology that makes us eventually have what Robert Heeney who was an incredible vitamin D scientist called long latency deficiency diseases.”

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Gary Brecka: The TRUTH About Biohacking, Light Therapy, and Nutrients
Optimizing Health: Lifestyle, Nutrition, Sleep, Exercise, and Social Connections 1:24:49 0
“the majority of us will benefit from methylated multivitamins, Omega fatty acid, minerals in the morning, and adding probably to that a vitamin D3 or K2”

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What Is A Compounding Pharmacy? The Secret to Beating Illness & Hormone Imbalances | Shaun Noorian
Understanding Hormone Imbalances and Medication Applications for Optimal Health 44:18 0
“these are natural compounds like testosterone or estrogen or vitamin C or vitamin D that exist in nature that are not new to Nature molecules and so n nature molecules they are like things that we make up as in the pharmaceutical industry but these are things that naturally exist”

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3 NEW Science-Backed Blue Zone Strategies To Increase Your Lifespan & Happiness: Dan Buettner
Enhance Your Longevity and Happiness with Blue Zone Lifestyle Choices 1:07:41 0
“High infant mortality so you populations aren't optimal but they're far enough North so they're not Bel leaguered too much by these infectious disease but they're also not so far north that they have to stay in because it's cold half the year like motans or something so they have Gardens two or three traditionally speaking Gardens two or three times a year they can be outside walking all the time they have access to Sunshine on their skin which is the number best source of vitamin D”

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The Root Cause of Metabolic Dysfunction w/ Dr. Casey Means
Understanding Metabolic Health: Risks, Dysfunction, and Dietary Recommendations 51:49 0
“understand the labs that can give you a hint about your metabolic health so things like the you know apob fasting insulin fasting glucose triglycerides htl cholesterol hscrp an inflammatory marker uric acid vitamin D um I think I said fasting insulin um if you can look at these things every few months and actually be certain that you are like really in the optimal range for a lot of these things and you feel incredible you're probably eating the right diet”

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The Root Cause of Metabolic Dysfunction w/ Dr. Casey Means
Understanding Metabolic Health: Risks, Dysfunction, and Dietary Recommendations 1:40:41 0
“when I was in Seattle in my residency in Psychiatry we had um these Bright Lights you know because Seattle's quite dark in the winter and I saw a lot of people with Seasonal effective disorder and the bright lights don't really work right it's just a blue light that you're putting in front of your eyes and it doesn't work but what would work is if somebody would go to Mexico and actually get in the Sun and so or if somebody would actually go outside and you can give someone vitamin D for season doesn't work it doesn't work doesn't work what if someone in Seattle even though it's dark in the winter just basically spends like almost all their time Outdoors that would probably help it would help a lot because you're getting”

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Why Paul Saladino, MD Quit A 100% Carnivore Diet, Impacts of Cholesterol, And the Value of Insulin
Rethinking Nutrition: Meat, Deception, Health Shifts, and Dietary Innovations 28:46 0
“LDL cholesterol over 99 nanograms per deciliter and I think a lot of people don't understand that cholesterol is actually not a fuel source right it's it's a construction material one of the main construction materials in our body we build hormones we build cell walls cell membranes we make vitamin D3 we make coloc calciferol from cholesterol and so it's it's a very necessary compound and yet it is vilified because in my opinion it's at the scene of the crime um but not the one pulling the trigger.”

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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 14:35 0
“if you look at for example vitamin D you need maybe 30 units so you don't get ricketetts but you might need 3,000 units so you don't get osteoporosis or cancer or dementia or heart disease or autoimmune diseases or a whole bunch of things that we call long latency deficiency diseases.”

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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 15:34 0
“When you look at the amount of deficiencies, whether it's, you know, 90 plus% deficient omega-3, 80 plus insufficient, deficient in vitamin D, and some people say even more, magnesium is about 45%, zinc's about 40%. Iron, you know, we have a lot of of deficiencies.”

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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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The Shady Reality of the $Billion Supplement Industry | The Dr. Hyman Show
Understanding Supplement Quality, Nutrition Myths, and Modern Health Realities 1:06:00 0
“One they don't often measure the baseline level of nutrients. So if your vitamin D is fine and you take vitamin D, you won't notice any change.”

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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 44:43 0
“you have to get out in the sun to get enough vitamin D because you're not drinking your vitamin D fortified milk because you have to actually make it in the sun or supplement it if necessary.”

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Let Food Be Thy Medicine: EAT THIS To Heal The Body & STARVE CANCER! | Dr. William Li
Food as medicine to prevent disease and promote health naturally 57:17 0
“Vitamin D, you know, for those of us who live in the northern hemisphere where we don't have as much sun all the time all year round and where it's cold so we're indoors a lot and not always outdoors under the sunshine... we tend to be vitamin D deficient.”

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Let Food Be Thy Medicine: EAT THIS To Heal The Body & STARVE CANCER! | Dr. William Li
Food as medicine to prevent disease and promote health naturally 58:00 0
“You can eat foods like mushrooms that can have vitamin D, for example... if you took just a plain old lowly white button mushroom that contains some vitamin D, if you were to, before you eat it, when you buy it, if you slice it pretty thinly and you lay the slices out and you put it in your windowsill so the sun shines on the slice, it will make more vitamin D.”

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Let Food Be Thy Medicine: EAT THIS To Heal The Body & STARVE CANCER! | Dr. William Li
Food as medicine to prevent disease and promote health naturally 1:22:37 0
“i know a lot of doctors take quite a hard line on supplements but you've demonstrated some really important ones that i think have been shown in scientific studies have real benefits like vitamin d for sure”

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DO THIS First Thing In The Morning To BOOST YOUR BRAIN & Increase Lifespan! | Dr. Daniel Amen
Boost Brain Health, Optimize Hydration, Nutrition, Mental Wellness, & More 1:15:40 0
“if you have low vitamin D everybody should get their vitamin D level checked you should have your vitamin D level B mid-range or high”

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DO THIS First Thing In The Morning To BOOST YOUR BRAIN & Increase Lifespan! | Dr. Daniel Amen
Boost Brain Health, Optimize Hydration, Nutrition, Mental Wellness, & More 1:15:57 0
“but if you lock everybody inside where they're not getting the sun you're dropping their vitamin D levels”

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DO THIS First Thing In The Morning To BOOST YOUR BRAIN & Increase Lifespan! | Dr. Daniel Amen
Boost Brain Health, Optimize Hydration, Nutrition, Mental Wellness, & More 1:16:01 0
“low vitamin D also goes with a smaller brain”

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Exercise & Nutrition Scientist: The Truth About Exercise On Your Period! Take These 4 Supplements!
Optimizing Women's Health and Performance Through Physiological Understanding 1:05:51 0
“If we're looking at Vitamin D especially vitamin D3, the difference so you have vitamin D2 and vitamin D3, vitamin D2 is more of a storage form it's not converted to being a functional form so if you take D3 it's already a functional form so it means your body is going to take it in and use it as it should be.”

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The Truth About Creatine & Exercise! 30% Of People Will Die From This! The Healthy Ageing Doctor
Optimize Your Health: Essential Insights on Nutrition, Exercise, and Hormones 1:04:13 0
“vitamin D as well as crucial isn't it for bone health I was reading that there it is it is magnesium vitamin D magnesium uh lesser known things strontium zinc Boron and micronutrients but big thing vitamin D magnesium”

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Zone 2 Training: The Science Behind Peak Metabolic Health | Dr Inigo San Millan | The Proof Podcast
Enhancing Metabolic Health Through Exercise: Complete Guide for Beginners 2:32:56 0
“I think that we have to be careful with some of these supplements which more and more are sophisticated and can really do biological actions more than just having like the typical vitamin C or vitamin A or even D.”

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Biomarkers For Slowing Eye Aging, Featuring ‪Joseph J. Allen
Optimize Eye Health: Insights on Aging and Preventative Measures 47:44 0
“As well as taking some supplementations including lutein and zeazanthin, vitamin D, uh curcumoids, and there's some other good benefits in the research and as well as omega-3s.”

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The Chronic Disease Expert: We Can Now Reverse Stage 4 Cancer! This Is Feeding Your Cancer Cells!
Revolutionize Health Through Nutrition: Overcoming Chronic Diseases and Cancer 1:54:47 0
“Supplements can be helpful in the literal translation of the world, supplement, which means topping off. So, if you can't get everything that you need from your food, then feel free to top it off.”

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Dr. Robert Lustig: How Sugar & Processed Foods Impact Your Health
Understanding the Complex Relationship Between Nutrition and Metabolic Health 1:49:35 0
“Vitamin D deficiency is associated with all these chronic metabolic diseases however supplementation with vitamin D has not fixed any of those.”

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Dr. Robert Lustig: How Sugar & Processed Foods Impact Your Health
Understanding the Complex Relationship Between Nutrition and Metabolic Health 1:50:33 0
“Vitamin D is a pre-pro hormone it's not active at all vitamin D is converted in the liver first step to a compound called 25 hydroxy vitamin D that is a pro hormone it also is inactive it has no activity whatsoever from there 25 hydroxy vitamin D can be metabolized one of two ways it can either be one alpha hydroxylated in the kidney to the active form one alpha one uh 25 dihydroxy vitamin D which will then do all of the business of vitamin D such as calcium absorption from the gut suppression of the immune system at the toll like receptor 4.”

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204 – Centenarians, metformin, and longevity | Nir Barzilai, M.D.
"Factors Influencing Longevity and Healthspan: Genetics, Hormones, Lifestyle, Environment" 2:16:42 0
“when fasting glucose and vitamin D level factor into a biologic clock I'm sorry that's useless.”

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Dr. Peter Attia: Supplements for Longevity & Their Efficacy
Supplements, Lifestyle, and Strategies for Longevity and Optimal Health 2:13:31 0
“I take vitamin D because interestingly despite the fact that I'm outside every day without supplemental vitamin D my levels are surprisingly low”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 6:29 0
“There are a ton of data now showing that vitamin D is essential for various aspects of our brain and body health.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:19:09 0
“So supplementation does play a major role, not only for people with darker skin that aren't outside all the time, but for everyone.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:19:16 0
“70% of the US population has inadequate vitamin D levels.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:19:47 0
“Vitamin D levels really seem to be ideal between 40 to 60 nanograms per milliliter.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:20:16 0
“Vitamin D is a steroid hormone, meaning it actually binds to a receptor and another receptor dimerizes with it, the retinoid receptor, and that complex goes into the nucleus of a cell, where your DNA is, and it recognizes little sequences of DNA called vitamin D response elements.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:25:29 0
“So supplementing vitamin D3 is what I normally hear. I do. I think I end up taking 5,000 IUs, sometimes 10 IUs of vitamin D3 per day.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:25:45 0
“I have a family member who was not feeling well, just kind of feeling off, a little low, had some digestive issues, this went on a long period of time, was taking, on my recommendation, 15,000 IUs of D3 and was still deficient in D3.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:26:45 0
“So vitamin D3 is a good way to supplement with it. Vitamin D2 would be a plant source. You often find it fortified in foods like milk, usually D2.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:30:58 0
“You're going to need at least 4,000 IUs, if you are normal and don't have any of these SNPs that change your metabolism of vitamin D, right?”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:32:09 0
“1,000 to 5,000 IUs for most people will be reasonably safe.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:32:24 0
“It is extremely hard to get hypercalcemia, which would be the major concern with really high levels of vitamin D3 supplementation.”

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Dr. Rhonda Patrick: Micronutrients for Health & Longevity | Huberman Lab Podcast #70
Optimizing Health and Longevity Through Nutrients and Lifestyle Choices 1:36:41 0
“So, if I'm taking vitamin D3, I still need to get out into the sun. Correct? - Absolutely.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 0:00 0
“About 70 percent of the U.S. population has inadequate vitamin D.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 0:13 0
“And it's, it's, you know, pretty clear that having levels above 30 is associated with a lower all cause mortality.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 3:35 0
“Vitamin D, vitamin D is an easy one. You know, that's something that we usually make in our skin from the sun. And about 70% of the US population has inadequate vitamin D.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 6:32 0
“People that are deficient and supplement with about 4000 IUs per day can bring their self up to a sufficient level closer, you know, above 30 nanograms per mil, perhaps even closer to 40.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 6:51 0
“And 4000 IUs per day is actually the tolerable upper intake set by the Institute of Medicine for vitamin D3.”

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How Vitamin D, Omega-3s, & Exercise May Increase Longevity | Dr. Rhonda Patrick
Essential Insights for Health and Longevity Through Diet and Lifestyle 35:45 0
“I think you've made a compelling case that we should all be aware of our vitamin D status and our omega index.”

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World’s #1 Longevity Expert: How To Live Longer in 4 Simple Steps
Optimal Health: Key Pillars for Longevity and Well-being Essentials 1:28:38 0
“I start the day with ag1 I then take um bosela because my knees are not ideal maybe a bit like my dad I then take turmeric vitamin D every day CBD drops that's kind of my thing and I've decided that works I have no the truth is I have no idea if that is waste of time money and energy or not.”

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World’s #1 Longevity Expert: How To Live Longer in 4 Simple Steps
Optimal Health: Key Pillars for Longevity and Well-being Essentials 1:29:57 0
“I believe that vitamin D is an important hormone and I believe that um most people these days are probably deficient in vitamin D um on account of the fact that we don't spend enough time outside.”

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World’s #1 Longevity Expert: How To Live Longer in 4 Simple Steps
Optimal Health: Key Pillars for Longevity and Well-being Essentials 1:33:48 0
“I'm not opposed to supplementation I just think it has to be very targeted and very thoughtful and if I can't answer those questions that I laid out then I don't it doesn't make sense.”

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