General Discussion
In reply to the discussion: Link between vitamin D, dementia risk confirmed (sciencedaily) [View all]hedgehog
(36,286 posts)"The study also found evidence that there is a threshold level of Vitamin D circulating in the bloodstream below which the risk of developing dementia and Alzheimer's disease increases. The team had previously hypothesized that this might lie in the region of 25-50 nmol/L, and their new findings confirm that vitamin D levels above 50 nmol/L are most strongly associated with good brain health."
For those of you who just have a lab number, Vitamin D serum levels are also measured in ng/ml, so yo need to check the units.
"To convert a test result measured in nmol/l to one measured in ng/ml, divide the nmol/l number by 2.5. For example, 50 nmol/l is the same as 20 ng/ml (50÷2.5)"
http://www.vitamindcouncil.org/about-vitamin-d/testing-for-vitamin-d/
The numbers referred to in the article seem to be in line with current recommendations:
http://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/
Those who are ranting about all you need is sunshine -
- Americans with darker skin have difficulties getting enough sun - they aren't outside enough and many live in Northern areas with very limited winter sunshine. The frequently overcast around some areas are also a problem.
- My autoimmune disease responds well to a high level of Vitamin D, but exposure to sunlight is a sure way to trigger a flare. Add to that the annual trip to the dermatologist to have the early signs of skin cancer removed. I take OTC Vitamin D to maintain my health,