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Please be aware that vitamin D being fat-soluble you can actually overdose on it (while with water-soluble vitamins you simply pee them away). Excessive dosage
by lultimouomo 8y ago
Please be aware that vitamin D being fat-soluble you can actually overdose on it (while with water-soluble vitamins you simply pee them away).
Excessive dosage of vitamin D can have very nasty effect (e.g. severe kidney damage).
Your skin stops synthesizing vitamin D when you have enough so you can't overdose by staying in the sun, but you can by taking supplements.
- hinkley 8y agoPeople hear of doctors prescribing 50k UI and don't understand that the liver is supposed to store surplus vitamin D for the winter. If you're deficient it will mop up a great honking dose of it, but that's not the same as already having adequate reserves and then taking a megadose.
- Scoundreller 8y agoVitD will store in fat. It’s b12 that’s stored in liver.
- ntsplnkv2 8y agoI'm vitamin D deficient, and have been taking 50k UI a week in a single weekly dose. It has done little to boost my levels, though, and I am overweight - so I wonder if that is why my Vitamin D levels are low. Since then I've lost 20 lbs, we'll see if my numbers change at my next blood test.
- mark_l_watson 8y agoBest to have your doctor check vitamins D levels first. That said, over 60, many people have vitamins D deficiency -- well worth getting a simple test to measure it.
- Scoundreller 8y agoThe test may be simple, but was costing the government about US$40 equivalents per test. Because everyone was asking for it, they’ve stopped making it so easy to get free tests based on lack of cost-benefit. If in doubt, or at risk, just supplement.
- lultimouomo 8y agoThe test costed me less than 20€ in a private lab in Italy, I assume the price is similar in most western countries. Is it such a high price not to fuck your kidneys?
- anentropic 8y agomany people of all ages have Vitamin D deficiency, unless you live near the equator and work outdoors you probably have it
- WalterSear 8y agoUnder 60, too. The fear of overdose is misfounded, IMHO. You have to try really hard. Deficiency, on the other hand, is endemic. "Vitamin D deficiency is a major public health problem worldwide in all age groups, even in those residing in countries with low latitude, where it was generally assumed that UV radiation was adequate enough to prevent this deficiency, and in industrialized countries, where vitamin D fortification has been implemented now for years." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018438/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018438/
- hnzix 8y agoAlong with selenium. After reading on the internet that it may help prevent prostate cancer, an Australian man took 10g of sodium selenite which he mistakenly purchased at a very high purity, and died shortly thereafter. [0] https://www.mja.com.au/journal/2006/185/7/accidental-death-acute-selenium-poisoning https://www.mja.com.au/journal/2006/185/7/accidental-death-a...
- baccheion 8y agoVitamin D overdose is less problematic/likely when also taking magnesium and vitamin K (10 IU D3 : 2 mcg+ MK-4).
- learc83 8y agoI'm always worried that the dose on the bottle is not the does I'm really getting, since supplements aren't well regulated. 1000 IU is only 25 micrograms, so it would be really easy for them put in 100,000 IU instead.