Earlier quoted context omitted.
Such as?
Tennis elbow, I'm guessing.
That's one (or two, for each elbow).
Vitamin D Insufficiency is Prevalent in Severe Covid-19
221–230 of 304 posts
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#222Interesting thing... Vitamin D is one of those things that, when vitamins come up on HN, you will often hear the refrain that "it's the one vitamin that large numbers of people are actually deficient in and ought to supplement." I've heard that many times over the years and I have taken a Vitamin D supplement on and off (more off than on) over the years. When this COVID-19 thing first hit, I had a physical scheduled…
A psychiatrist I saw multiple years ago told me to start taking Vitamin D. I went more or less blindly with 5,000 IU after reading some internet articles. I got my blood checked last year and decided I should probably actually know if I'm doing too much or too little. I was within 5% of the middle of the healthy range for vitamin D levels. For reference, 5,000 IU is >800% the FDA daily recommended value. People with…
Okay now I'm wondering if I should go get tested for vitamin d deficiency. I live in Colorado and therefore we have a lot of ultraviolet light and I do get outside as much as possible. However I'm wondering if that's still not enough.
Seems reasonable that it's not based on your experience.
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#223Interesting thing... Vitamin D is one of those things that, when vitamins come up on HN, you will often hear the refrain that "it's the one vitamin that large numbers of people are actually deficient in and ought to supplement." I've heard that many times over the years and I have taken a Vitamin D supplement on and off (more off than on) over the years. When this COVID-19 thing first hit, I had a physical scheduled…
You'd have to get follow up to see if Vitamin D has gone up after taking it. I was Wrong on the internet (lots of food has vitamin D including Eggs and Mushrooms): Vitamin D supplements may not be absorbed as digestion isn't the normal process for obtaining it.
"Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources [1,11]. Small amounts of vitamin D are found in beef liver, cheese, and egg yolks. Vitamin D in these foods is primarily in the form of vitamin D3 and its metabolite 25(OH)D3 [12]. Some mushrooms provide vitamin D2 in variable amounts [13,14]. Mushrooms with enhanced levels of vitamin D2 from being exposed to ultraviolet light under controlled conditions are also available."
https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessiona...
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#224Earlier quoted context omitted.
Sunlight is bad for you in high doses without sunscreen. Moderate exposure is healthy, and may decrease the risk of many other cancers and heart disease. https://www.medicalnewstoday.com/articles/260247#3 https://www.telegraph.co.uk/news/2018/03/07/dose-sunshine-ex... https://www.marksdailyapple.com/why-some-sun-exposure-will-p... Another way to look at it is that we evolved with the sun over millions of years, and t…
Damaging high doses can be as little as a few minutes in the Australian summer so I think it's fair to keep that in mind. On your evolution comment, most Australians don't have dark skin, but the ones who were here before Europeans do. I think that is a good indicator that the body is adjusting to something harmful. On the other hand, many dark skinned people in Britain aren't in a climate they evolved for either. We…
Adding some information for those interested in more precise numbers.
This paper [1] has the recommended exposure time for a few cities in Australia. If you live in the same latitude, as long you live in the same latitude, this can be used as a guideline.
https://staging.mja.com.au/system/files/issues/194_07_040411...
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#225Earlier quoted context omitted.
Sunlight is bad for you in high doses without sunscreen. Moderate exposure is healthy, and may decrease the risk of many other cancers and heart disease. https://www.medicalnewstoday.com/articles/260247#3 https://www.telegraph.co.uk/news/2018/03/07/dose-sunshine-ex... https://www.marksdailyapple.com/why-some-sun-exposure-will-p... Another way to look at it is that we evolved with the sun over millions of years, and t…
Early morning and sunset have wavelengths that are more beneficial and it's a great time to be outdoors.
Not for vitamin D production.
Vitamin D is produced on UVB spectrum [1 Fig. 1] that decreases with the solar azimuth degree [2].
[1] https://www.direct-ms.org/wp-content/uploads/2018/01/Vit-D-s...
[2] https://www.researchgate.net/publication/285056396_Vitamin_D...
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#226Unfortunately this study shows correlation but not causation. Hopefully more studies are under way.
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#227Earlier quoted context omitted.
Isn’t some sunlight exposure good in general? I think it’s going too far to declare sunlight as genealogy dangerous. It definitely helps me with my mood.
my understanding standing is that the older you get the less that your body can metabolize from sunlight and it’s sunlight that occurs for a small period of time during the day based on the angle of the sun and the type of UV rays that are filtered. and you need to be naked
I've read a few paper on this subject you are absolutely correct, I don't know why you are have been downvoted.
Vitamin D is only produced with in UVB wavelength [1]. No vitamin D is produced over 318nm. I wonder if that's the reason they divided the range in UVA, UVB and UVC.
The solar ray incidation angle, pollution and altitude (higher, more UVB) affects the amount of UVB that hits the surface [2].
Therefore, the time of the day you are sunbathing is important to optimize Vitamin D synthesis. Midday is the best time. If you live bellow 25 degree latitude, the UVA/UVB ratio on winter is about the same on summer. Of course, you should take in consideration the weather and the UV index. I'm talking only about the ratio.
This paper [3] has guideline for sun exposure for Australian. It is possible to correlate the data for other places in the same latitude -- taking in consideration the Australian differences in UV index.
[1] https://www.direct-ms.org/wp-content/uploads/2018/01/Vit-D-s... [2] https://www.researchgate.net/publication/285056396_Vitamin_D... [3] https://staging.mja.com.au/system/files/issues/194_07_040411...
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#228Earlier quoted context omitted.
Nobody makes any money if it turns out to be a good treatment, so nobody will fund the research
I don't know about that. From where I'm sitting, lots of companies stand to gain if Vitamin D turns out to make a big difference. For example: American Airlines, Hilton, and McDonald's.
Not sure I understand why these companies specifically would benefit a new VitD world.
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#229Interesting thing... Vitamin D is one of those things that, when vitamins come up on HN, you will often hear the refrain that "it's the one vitamin that large numbers of people are actually deficient in and ought to supplement." I've heard that many times over the years and I have taken a Vitamin D supplement on and off (more off than on) over the years. When this COVID-19 thing first hit, I had a physical scheduled…
Does anyone know of a rule of thumb for how much time spent in direct sunlight is equivalent to a Vitamin D supplement? Is an hour per day (on average) sufficient?
I guess an ultraviolet lamp works also? )Or at least the Soviets thought it did).
https://www.nationalgeographic.com/photography/photo-of-the-...
Re: Vitamin D Insufficiency is Prevalent in Severe Covid-19
#230Earlier quoted context omitted.
Does anyone know of a rule of thumb for how much time spent in direct sunlight is equivalent to a Vitamin D supplement? Is an hour per day (on average) sufficient?
To add to the other replies, it depends on various factors (sun elevation being the most important). This is the best calculator I am aware of: https://fastrt.nilu.no/VitD_quartMEDandMED_v2.html There are other related calculators linked also.
The Solar Zenith Angle is the most important. This is what changes from winter to summer and morning to night.
Vitamin D production is only made on the UVB range that is highest at midday. Both UVA and UVB causes erythema. Counterintuitively to common sense, it is better to sun bath midday than early in the morning.
If you sunbath at 8 you might need twice as many time to produce the same amount of vitamin D and you be exposed to much more UVA, thus more like to get burn.