Comments by "Mark Pawelek" (@mark4asp) on "Vitamin D dose" video.

  1. UK gov recommendations are based on guesswork and myth. The maximum dose of vitamin D sold in UK is 4000 IU. This is still too little! UK gov should up the recommendation to 10000 IU vitamin D per day during winter.
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  2. No. I would take the maximum allowed in UK, which is 4000 IU per day. 1000 ng = 1 µg = 40 IU 1000 µg = 1 mg A safe dose of vitamin D leads to a blood level above 50 ng/mL in blood. Any level above 50 ng/mL and below 150 ng/mL of vitamin D is considered safe. Vitamin D exists is 3 forms. It is stored in fat cells. Vitamin D3, from fat, or sunlight, is converted to the active vitamin D form in the kidneys. Vitamin D3 is the normal form found in pills and capsules. A recent study found that, after several months, of a dose of 20000 IU per day, people still had blood levels below 100 ng/mL of vitamin D. None of them developed Vitamin D toxicity symptoms. Everyone in UK should take at least 4000 IU/day. It's a good idea to take vitamin K2 with the vitamin D. Taking vitamin K2 with vitamin D3 helps to ensure the calcium transported by the vitamin D is absorbed by your bones where it's needed Vitamin D toxicity? Only ever seen with truly massive vitamin D doses! "In the 1940s, vitamin D was thought to be effective for treating rheumatoid arthritis and massive doses of 200,000 to 300,000 IU/day were given. It was soon realized that these massive doses resulted in vitamin D intoxication, including hypercalcemia, hyperphosphatemia, nephrocalcinosis, kidney stones, and soft tissue calcifications." Read: Holick, M. F. (2015). "Vitamin D Is Not as Toxic as Was Once Thought: A Historical and an Up-to-Date Perspective". Mayo Clinic Proceedings, 90(5), 561–564. doi:10.1016/j.mayocp.2015.03.015 https://www.mayoclinicproceedings.org/article/S0025-6196(15)00244-X/fulltext
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  3. You can safely take ten times that amount of vitamin D = 10000 IU / day.
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  4. 100 µg = 4000 IU. No study ever showed vitamin D toxicity at that (low) level. You'd need to take 25 times that amount, for months, to experience vitamin D toxicity. µg = mcg; is pronounced micrograms.
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  5. You got your units mixed up. 180 mg would be a massive, dangerous, amount of vitamin D to take. No one would sell you that amount. Did you mean to say 180 µg? 10000 IU per day is safe.
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  6. Untrue. Vitamin D3 builds up in your body. It is stored in fat cells. D3 is an inactive form of vitamin D. The active form, in your blood, is made from D3 in your kidneys. 10000 IU of vitamin D3 per day is safe. Ten times that is dangerous. Vitamin D toxicity is only ever seen with truly massive vitamin D doses! "In the 1940s, vitamin D was thought to be effective for treating rheumatoid arthritis and massive doses of 200,000 to 300,000 IU/day were given. It was soon realized that these massive doses resulted in vitamin D intoxication, including hypercalcemia, hyperphosphatemia, nephrocalcinosis, kidney stones, and soft tissue calcifications." - Holick, M. F. (2015). "Vitamin D Is Not as Toxic as Was Once Thought: A Historical and an Up-to-Date Perspective". Mayo Clinic Proceedings, 90(5), 561–564. doi:10.1016/j.mayocp.2015.03.015 https://www.mayoclinicproceedings.org/article/S0025-6196(15)00244-X/fulltext
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  7. 10,000 IU of vitamin D per day is safe. You'd need ten times that for months to overdose.
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  8. Yes. But why not up your dose? I found 1 year supply of vitamins D3 (4000 IU) with K2 on the web for only £13.
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  9. Please tell. Which study found "softening of the bones" from too much vitamin D? Please cite that study. I'd like to read it.
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  10. You can overdose on vitamin D; but to overdose - you need to take ten times what you're currently taking for several months. 10000 vitamin D daily is safe.
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  11. Oh yeah? But vitamin D toxicity is only seen at levels above 100000 IU per day. You'd need to take it for months to get there. Please stop scaring people.
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  12. There are several forms of vitamin D. Vitamin D3 is an "inactive" form. It will be stored in fat cells. Your body will make the active form of vitamin D in your kidneys from vitamin D3 as required.
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  13. I think 1000 IU / day to too little. Ten times that is safe. Toxicity? Only seen with vitamin D levels of 100,000 IU / day, or more, taken for several months.
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