Your face is one of your most important assets, so why not protect it
doi:10.1210/jc.2017-01155
There are many reasons why one might not get enough Vitamin D: you may be lactose intolerant, or you may live in Minnesota and not see the sun for six months out of the year
Screening may be warranted in patients with one or more risk factors, such as gastric or small intestine resections, inflammatory bowel disease, use of metformin for more than four months, use of proton pump inhibitors or histamine H 2 blockers for more than 12 months, vegans or strict vegetarians, and adults older than 75 years
Following recommended schedules helps avoid overuse.
Rates do not apply to holidays, Easter, long weekends, national holidays, Christmas or New Year