Derec, I'm not going to debate you, but I will give an example of an article that disclaims what you think about Vitamin D. I will add this. I've read books about vitamin D, when it was a panacea.
I never said that it was a panacea. I merely said that it plays an important role in the regulation of the immune system (there are dozens of scientific papers on that) and that article doesn't change that. That doesn't mean that you should take more than your body needs, obviously.
As far as myself getting more sunshine, my own provider has told me that it's safer for me to take supplements than to spend much time in the sun. Older adults with fair skin are a high risk for skin cancer if they spend too much time in the sun. But, I digress.
I said that because you mentioned you have difficulties with absorbing dietary vitamin D.
The problem with that, said Alexander, is that associative data doesn't necessarily imply causation—and the COVID-19 findings follow the same fallacy.
Correlation + mechanisms of action do provide very strong evidence of causation actually.
Of course we should not treat any supplement as a panacea. And there is such a thing as vitamin D toxicity, but you have to take way more than recommended. But to dismiss the role vitamin D plays in the regulation of the immune system is ridiculous given what we know about the science.
The thing that I"ve learned about medical science, mostly from my long career as a professional nurse, is that medical studies are often published without enough evidence to back up the finding.
If the study came out and there was no evidence of vitamin D playing any role within the immune system, you may have a point here.
Unfortunately, doctors are often the worst when it comes to believing what they want to believe.
Like a certain Canadian pediatrician?
As I already mentioned, I've been D deficient on and off for over 2 decades, yet I'm very healthy and rarely get as much as a cold. There is plenty of evidence out there is you are open minded that debunk many of the claims about the benefits of vitamin D.
Sure. Dismiss all the scientific studies in favor of an anecdote with n=1.
And note, vitamin D plays a role in immune system
regulation. Specifically,
it plays a role in inhibiting the pro-inflammatory response. That response is important, but if it gets out of hand (as it does during cytokine storms) it can cause damage to tissues, so the body needs a way to turn it off as it were.
So you not getting colds and the role of the vitamin D in the regulation of the immune system are not even in conflict. It may simply be that you have not gotten an infection where an overactive pro-inflammatory response would be triggered.
I am well aware that darker skin usually doesn't absorb as much D as lighter skin does,
Wrong. Skin-color has nothing to do with vitamin D
absorption. It has to do with endogenous vitamin D
synthesis from 7-dehydrocholesterol.
Refer back to the graphic I posted upthread.
but I don't think there is enough evidence to support that is why darker skin folks have more complications of COVID.
I offered it as a possible contributing factor. I did not claim we have data on that. That said, this paper offers some interesting data.
Vitamin D deficiency and co-morbidities in COVID-19 patients – A fatal relationship?
Hans K. Biesalski said:
This raises the question whether insufficient vitamin D supply has an influence on the course of COVID-19 disease? An analysis of the distribution of Covid-19 infections showed a correlation between geographical location (30–50° N+), mean temperature between 5–11 °C and low humidity [10]. In a retrospective cohort study (1382 hospitalized patients) 326 died, Among them 70.6% were black patients. However, black race was not independently associated with higher mortality [11]. An excess mortality (2 to sixfold have been described in African-Americans with average latitudes of their state of residence in higher latitudes (> 40) [12]. The mortality of COVID-19 (cases/ million population) shows a clear dependence on latitude. Below latitude 35, mortality decreases markedly [13]
Emphasis mine.
While not conclusive - COVID19 is a very new disease after all - it is certainly not the case that the relationship should be dismissed out of hand, like you are scoffingly doing. This papers also offers some other pathways of action of vitamin D and their effects on comorbidities such as hypertension. An interesting read.
I've already mentioned some of the primary risk factors, which include obesity, asthma, hypertension, diabetes etc. Plus, there are a lot of Black folks who work in essential jobs, which exposes them to higher viral loads than those of us who rarely leave our homes.
All true, and some of it was mentioned by me upthread, in the same post I mentioned vitamin D deficiency.
Being exposed to higher viral loads is certainly a possible cause of COVID complications. That explains why so many nurses and other health professionals who might be otherwise healthy, have died or had serious complications from COVID.
I was thinking the same thing when there was a lot of reporting on young medical professionals getting very sick. In general, viral dose can definitely affect the disease progression. That's why masks and social distancing are so important. By keeping away 6' and wearing a surgical mask, you may not prevent all virions an infected person spews out from reaching you, but it will decrease the number that can get through by a lot. Perhaps enough to prevent you getting sick.
There is even some talk that masks may act as a crude "vaccine", exposing some wearers to enough virus to trigger an immune response without making them sick.
Facial Masking for Covid-19 — Potential for “Variolation” as We Await a Vaccine
But go ahead, and believe what you want to believe. It's very easy to cherry-pick medical studies.
I am not cherry-picking, there are dozens of papers written on it. Including generally, written well before this pandemic, on the role vitamin D plays in immunoregulation. I do not know why you are so dismissive of it.
I'm just not buying into the claims about vitamin D.
It's a free country I guess. Just like with astrology, you are welcome to believe whatever you want.
And, I'm not interested in having a debate. I'm more interested in having a discussion, but you often seem to enjoy goading people.
It was not my intention to goad you, other than a friendly jab or two here or there.
I was merely trying to help you realize that your problem with obesity puts you at risk for complications,
I understand that. But just because obesity is one risk factor, does not mean vitamin D deficiency is not another.