Female healthcare employees: 4 percent took more than 4,000 IU vitamin D daily
Vitamin D Recommended Daily Allowance (RDA) Insufficiency in Female Healthcare Employees of Childbearing Age
The Journal of Alternative and Complementary Medicine. May 2014, 20(5): A124-A125. doi:10.1089/acm.2014.5331.abstract.
Plotnikoff, Gregory; Finch, Michael, Calvin,Steven, and Dusek Jeffery.
Female healthcare employees:
59% take vitamin D
50% take > 400 IU
2% take 3001-4000 IU 42 ng
4% take > 4,000 IU 42 ng
abstract is attached at the bottom of this page