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This guy will get you killed. It is reasonable to maintain a blood level of about 45 ng/mL. This often requires 5000 IU/day, perhaps less in seniors with weaker

This guy will get you killed. It is reasonable to maintain a blood level of about 45 ng/mL. This often requires 5000 IU/day, perhaps less in seniors with weaker kidneys, or those with heavy sun exposure which is dangerous for other reasons. You don't need to see a doctor for this, but you do need to get the test done every year or two. Personally I prefer not involving a doctor for any of it. Nobody disputes that excessive vitamin D is not good, but maintaining a blood level below 45 ng/ml also is not good. Covid studies had ascertained that a level of at least 50 ng/ml was optimal.

Aurornis 2mo ago
> This guy will get you killed Yeah, no. Advising people to correct Vitamin D deficiencies but to avoid overdosing is correct. I quoted the study. The study agrees that excessive Vitamin D consumption is not good.
- OutOfHere 2mo ago
  An excess of anything is not good. The point is that insufficient supplementation leaves most people far below the optimal blood level of vitamin D, typically even in a hazard zone, and doctors do absolutely nothing to address the situation. As the definitive case in point, they maintain the formal requirement at 600 IU which shows their intent to kill everyone who isn't better informed.
rfgplk 2mo ago
> 5000 IU/day Ironically these "IU/day" estimates are bogus. Direct ~noon sunlight at the equator for fair skinned individuals produces (full body exposure) 15-50k IU/hour of D3 equivalent, depending on the estimate. You clearly don't see people dropping dead after two hours in the sun. GPT response For a fair-skinned adult, nude or essentially whole-body exposed, at solar noon near the equator under a clear sky, a reasonable order-of-magnitude estimate is: Exposure Approx. D3-equivalent produced ~3 min ~2,500–6,000 IU ~5 min ~4,000–10,000 IU ~10 min ~8,000–20,000 IU ~10–15 min / ~1 MED ~10,000–25,000 IU >20–30 min does not keep increasing linearly The best-known experimental anchor is that roughly one full-body minimal erythema dose (1 MED)—enough UV to cause faint redness later—is associated with a vitamin-D effect comparable to ingesting about 10,000–25,000 IU (250–625 µg) of vitamin D3. Reviews note that this estimate has also received support from outdoor solar-exposure studies, although the original experiments used artificial UV sources. https://pmc.ncbi.nlm.nih.gov/articles/PMC3257661/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3257661/ study

Aurornis 2mo ago

> This guy will get you killed Yeah, no. Advising people to correct Vitamin D deficiencies but to avoid overdosing is correct. I quoted the study. The study agrees that excessive Vitamin D consumption is not good.

OutOfHere 2mo ago
An excess of anything is not good. The point is that insufficient supplementation leaves most people far below the optimal blood level of vitamin D, typically even in a hazard zone, and doctors do absolutely nothing to address the situation. As the definitive case in point, they maintain the formal requirement at 600 IU which shows their intent to kill everyone who isn't better informed.

rfgplk 2mo ago

> 5000 IU/day Ironically these "IU/day" estimates are bogus. Direct ~noon sunlight at the equator for fair skinned individuals produces (full body exposure) 15-50k IU/hour of D3 equivalent, depending on the estimate. You clearly don't see people dropping dead after two hours in the sun. GPT response For a fair-skinned adult, nude or essentially whole-body exposed, at solar noon near the equator under a clear sky, a reasonable order-of-magnitude estimate is: Exposure Approx. D3-equivalent produced ~3 min ~2,500–6,000 IU ~5 min ~4,000–10,000 IU ~10 min ~8,000–20,000 IU ~10–15 min / ~1 MED ~10,000–25,000 IU >20–30 min does not keep increasing linearly The best-known experimental anchor is that roughly one full-body minimal erythema dose (1 MED)—enough UV to cause faint redness later—is associated with a vitamin-D effect comparable to ingesting about 10,000–25,000 IU (250–625 µg) of vitamin D3. Reviews note that this estimate has also received support from outdoor solar-exposure studies, although the original experiments used artificial UV sources. https://pmc.ncbi.nlm.nih.gov/articles/PMC3257661/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3257661/ study