Several years ago, there was one year when a bone density scan said I was Vitamin D deficient. They put me on prescription Vitamin D. When I think about it, I was also on cholesterol med, although not a statin. I refused the statin because my father died of liver disease and he had been on long term cholesterol med. Since having bariatric surgery 6 years ago, I take several vitamin supplements, including D. I haven't been deficient since. I also try to get out in the sunshine when I can.