"The following is a list of the Top 10 health breakthroughs of 2008. I know there are many other possible candidates for this Top 10 list. This is my version of the highlights that made 2008 special."
Safety of vitamin D3 in adults with multiple sclerosis.
Kimball SM, Ursell MR, O'Connor P, Vieth R.
Am J Clin Nutr. 2007 Sep;86(3):645-51.
PMID: 17823429
Conclusions: Patients' serum 25(OH)D concentrations reached twice the top of the physiologic range without eliciting hypercalcemia or hypercalciuria. The data support the feasibility of pharmacologic doses of vitamin D3 for clinical research, and they provide objective evidence that vitamin D intake beyond the current upper limit is safe by a large margin.