Technically speaking, vitamin D isn’t even a vitamin. It is a specific class of fat-soluble hormones that the body produces. This is accomplished by the sun’s radiation turning into vitamin D when it enters the skin. You might not, however, acquire enough vitamin D from sunshine due to a number of causes (especially living in Oregon). These include the usage of sunscreen with UV protection, spending excessive amounts of time indoors, and pollution and cloud cover that block UV radiation from entering the earth’s atmosphere.