Do you ever wonder why everybody seems to be deficient in vitamin D? I do, in fact, when I test individual blood levels I find that the only people not deficient are people who supplement.
The Norwegian Institute for Air research created this calculator to determine how much sunshine you need to create the equivalent of 1,000 International Units (IU) of vitamin D in a day.
A Caucasian with fair skin living in Spanish Fork, UT on July 24th (Fiesta Days) at noon can produce 1000 IU of vitamin D in 27 minutes. It is recommended we get between 2000 IU and 5000 IU of vitamin D daily of optimal health. This would require 1 - 2.5 hours of mid summer sunlight each day. In January it would require 5 hrs to create 1000 IU of vitamin D.
Unless you are able to be out in the sun for a few hours each day between 10 am and 2 pm you should get your vitamin D levels measured periodically and supplement with vitamin D.
Dr. Steven Davis
Advanced Wellness Center