Vitamin D: A dosing down?
blogs.nature.com
blogs.nature.com
Every few days a new link is sent to me about "new studies" showing that Vitamin D in 'x' amount or 'y' amount is required/dangerous/whatever.
I see one of the best Oncologists in the country about my ongoing treatment, and he has had me on 3000IU a day over the last 6 months, and it has made me feel better in so many ways. Everyone says I look healthier, I have more energy, I sleep better, and I just feel more "alive", even as the cancer eats away at me inside.
I'm not knowledgeable enough to weigh in one what the perfect amount is, or what the limit is, as I don't understand most of it, but 1 thing I know is that the deficiency vs how I feel now is 2 different people, so it's definitely an important health aspect that needs to be better understood.
Section of Text:
Instead of a careful, science-minded conclusion that meets the painfully conservative demands of crafting broad public policy, the committee instead chose to dogmatically pull the discussion back to the 1990s, ignoring the flood of compelling evidence that suggests that vitamin D is among the most important public health issues of the age.
Believe it or not, this new, though anemic, RDA represents progress: It's a (small) step farther down the road towards broader recognition and acceptance that higher intakes (or skin exposures) to achieve higher vitamin D levels are good for health.
My view: Vitamin D remains among the most substantial, life-changing health issues of our age. Having restored 25-hydroxy vitamin D levels in over 1000 people, I have no doubt whatsoever that vitamin D achieves substantial benefits in health with virtually no downside, provided 25-hydroxy vitamin D levels are monitored.
What form of Vitamin D? D-3?
How does this play into the fact that an adult body in direct summer sunlight produces several thousand units within a half hour?
I don't remember the source, but I think a lifeguard on the beach would produce about 8000IU of Vitamin D during a day.
So it begs the question - where did the "4000IU max intake" figure come from?
Until we can actually figure out just where all that vit D is supposed to be used in the body, we're just making it up.
(It should be noted that this study only seems concerned with bone growth-- something we are not sure of yet is vitamin D's only function)
The takeaway is that the maximum daily level intake they have is 4000IU for adults and their recommendation is 600IU.