Hi Tommy, I assume you are writing from the United States where 25-hydroxyvitamin D levels are measured in ng/mL (billionths of a gram per millilitre). For those in the UK, New Zealand, Canada (I think) or here in Australia, multiply the ng/mL figure by 2.5 to get the value in nanomols per litre (nmol/L) as are used in these countries. A mole is a number of molecules: 6.022 X 10 to the power 23 (Avogadro’s constant).
So your “85” (ng/mL) is 212.5 nmol/L. I regard this as a perfectly healthy 25-hydroxyvitamin D level for almost everyone unless there is well-informed medical advice to the contrary - but I am an electronic technician and computer programmer, not a doctor. I know of many people with such levels, at least past their 60s, who are doing very much better than average for their age.
There is plenty of ill-informed medical advice regarding 25-hydroxyvitamin D levels, with many doctors thinking the 20 to 30 ng/mL range they aim for is sufficient for full health. Such doctors would probably consider 85 ng/mL to be an alarmingly high figure. They are not familiar with the best research
The 25-hydroxyvitamin D level varies with many factors for a given body weight and amount of vitamin D3 supplementation. Some of these would be related to genes. I think that Prof. Wimalawansa’s recommendations (Vitamin D and the Immune System - how much vitamin D3 to take, by body weight and obesity status):
70 to 90 IU / kg body weight for those not suffering from obesity (BMI < 30).
100 to 130 IU / kg body weight for obesity I & II (BMI 30 to 39).
140 to 180 IU / kg body weight for obesity III (BMI > 39).
are perfectly good. The USA is the last country, as far as I know, to use pounds. Multiply pounds by 2.2 to get kilograms.
After a few months these will attain at least 50 ng/mL (125 nmol/L) circulating 25-hydroxyvitamin D. There is no experimental validation of these recommendations, but they are based in part on the work of some Iranian doctors in Dubai: Suggested role of Vitamin D supplementation in COVID-19 severity | Journal of Contemporary Medical Sciences.
They recommended their patients supplement 70 to 100 IU vitamin D3 per day, on average, per kilogram body weight. So the upper end of their range is slightly above Prof. Wimalawansa’s range of 70 to 90. Without supplementation, 95% of their patients had 25 hydroxyvitamin D levels below 35 ng/ml. With these body weight ratio based D3 intakes, and 7.2 mg 300,000 IU bolus initial D3 doses, all 500 or so patients over multiple years attained at least 40 ng/ml and none more than 79 ng/ml circulating 25-hydroxyvitamin D.
Those in the lower range, such as 40 to 50 or 55 ng/mL would have been the people who were suffering from obesity. The highest level was 79 ng/mL, which (I think it is reasonable to assume) would have been for one or a few patients with normal or underweight body morphology, not overweight or suffering from obesity.
We don’t know exactly how much these patients supplemented, but I think it shows that Prof. Wimalawansa’s recommendations, for people not suffering from obesity, will not generally raise levels above 60 ng/mL and will generally not above 80 ng/mL.
Your report of the technician’s observations of 25-hydroxyvitamin D levels and COVID-19 deaths strikes me as entirely accurate. Most people cannot imagine that the majority of the medical profession, and whole governments, could be so corrupted and/or clueless as to take no interest in these observations and/or deny and suppress them, because if their extraordinary, ill-placed, faith in vaccines - and in the mRNA and adenovirus vector gene therapy injections falsely portrayed as vaccines. This is what happened, and tide is only slowly turning, with a majority of medical professionals, albeit less than a few years ago, still ignoring this crucial evidence of the immune system’s need for 25-hydroxyvitamin D levels well above the 15 to 25 ng/mL which is typical of those who get little UV-B skin exposure, and who not supplement vitamin D3 properly.
Here is graph depicting such anti-correlation between 25-hydroxyvitamin D levels and COVID-19 severity. Links to the research articles from which this data is derived: https://aminotheory.com/cv19/#vc
I have also attached a depiction of similar observations from Dror et al. 2022: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0263069.
The third graph is adapted from Tuncay et al. 2021 A notable key for estimating the severity of COVID-19: 25....
Long may you walk hills! I am 69, so I am right behind you.