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Vitamin D reduces incidence and duration of colds in those with low levels
151–160 of 241 posts
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#152Earlier quoted context omitted.
The problem is that vitamin D doesn’t absorb the same way for everyone. If a 100 people take 50IU of Vitamin D, you get 100 different results. Some get enough from minor sun exposure and maybe eating a fish now and then. Others need massive doses to get any results.
50IU is a minuscule dose though, no? If people are recommended to supplement, they generally take a dose in the range of a few thousand.
i'm guessing he meant 50k not 50. 50k is quite a large dose.
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#153Do we really know what "optimal" vitamin D levels are? I've heard a wide range of answers on this, and it's not even clear to me that we know whether there is natural human variability in the amount needed.
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#154Earlier quoted context omitted.
50 IU is nothing. 3000 IU is something. I have MS, so I need to supplement at least 10k IU. And yeah, it does not absorb well unless you eat some fat.
I took 10k iu via a multivitamin for a few months, and ended up with Vitamin D levels 5x higher than the maximum on the labcorp reference range. "Vitamin D toxicity" It took many months to get the levels back to normal. Vitamin D is one of those things that once you overdose, it takes many months for the levels to slowly come down after you stop supplementing. Be careful with Vitamin D! The downside to having high le…
Yeah, you should take vitamin D with K2 at the very least.
Thanks for the tip though. I do not take it regularly so I think I'm fine. :D
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#155Most vitamins are a waste of time and money, some are even harmful[1], but there are a lot of people with D deficiency, especially in winter[2]. 1 https://www.mdpi.com/2072-6643/17/17/2744#:~:text=highest%20... 2 https://www.abs.gov.au/articles/vitamin-d#edit-group-image--...
Vitamin D isn’t technically a vitamin in the strict sense, because unlike the other vitamins the human body can produce it itself (by exposure to sunlight).
The body can also synthesize vitamin A from beta-carotene which is effectively two vitamin A molecules joined together (one rotated 180deg relative to the other).
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#156Heh...this is a shady study if I ever saw one. -- Exactly 400 study participants recruited. -- Exactly 193 of 200 participants completing the study in each group (which, for a study administered in a community setting, is an essentially impossibly-high completion rate). -- No author disclosures -- in fact, no information about the authors whatsoever, other than their names. -- No information on exposures, lifestyles,…
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Re: Vitamin D reduces incidence and duration of colds in those with low levels
#157Vitamin D, red light therapy, insulin attenuating response of a walk, immunological benefit of allergen exposure, cognitive noise reduction and rest response of walks in forests. Man keeps trying to bring the outdoors inside.
How do I bring outdoors to the wage slave office? And how do I bring light to the pre-work and afterwork when there is no sun at those times?
The practical man uses technology to offset the prison built for him. The hapless enabler farms “pithy” HN points in his LED-lit room.
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#158Heh...this is a shady study if I ever saw one. -- Exactly 400 study participants recruited. -- Exactly 193 of 200 participants completing the study in each group (which, for a study administered in a community setting, is an essentially impossibly-high completion rate). -- No author disclosures -- in fact, no information about the authors whatsoever, other than their names. -- No information on exposures, lifestyles,…
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I think the strongest criticism is just that being short of just about anything would cause significant effects. being short of water, calories, any vitamin, protein, etc.
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#159I live in Winnipeg, Manitoba where it is quite cold for a big majority of the year. I have dabbled with supplements because I get a couple of major colds every year. I've heard things like you only need 15 minutes of sunshine per day to get your recommended dose of Vitamin D, but I've also heard it can be quite bad for you if you have too much in your system (and it's hard for your body to flush excess amounts). If t…
25000 IU weekly during winter is OK, for an adult
Re: Vitamin D reduces incidence and duration of colds in those with low levels
#160Heh...this is a shady study if I ever saw one. -- Exactly 400 study participants recruited. -- Exactly 193 of 200 participants completing the study in each group (which, for a study administered in a community setting, is an essentially impossibly-high completion rate). -- No author disclosures -- in fact, no information about the authors whatsoever, other than their names. -- No information on exposures, lifestyles,…
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