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vitamin d Tag

The Complete Herbal Guide / Posts tagged "vitamin d"
How Much Vitamin D Should You Take?

How Much Vitamin D Should You Take?

The Optimal Dose of Vitamin D Randomized, controlled clinical trials have found that vitamin D supplements extend one’s lifespan. What is the optimal dose? What blood level is associated with living longest? In my nine-part video series on vitamin D back in 2011, I noted that the relationship between vitamin D levels and mortality appeared to be a U-shaped curve—meaning low vitamin D levels were associated with increased mortality. But so were levels that were too high, with the apparent sweet spot around 75 or 80 nanomoles per liter [nmol/L], based on individual studies like this one. Why might higher D levels be associated with a higher risk? Well, this was a population study; so, you can’t be sure which came first. Maybe vitamin D led to higher...