How to read my vitamin D results in my blood test results? Also, is vitamin D 3000-4000 units a day safe for older adults that are in heart medication and other meds -
![Nutrients | Free Full-Text | Optimal Vitamin D Supplementation Doses that Minimize the Risk for Both Low and High Serum 25-Hydroxyvitamin D Concentrations in the General Population Nutrients | Free Full-Text | Optimal Vitamin D Supplementation Doses that Minimize the Risk for Both Low and High Serum 25-Hydroxyvitamin D Concentrations in the General Population](https://www.mdpi.com/nutrients/nutrients-07-05527/article_deploy/html/images/nutrients-07-05527-g001.png)
Nutrients | Free Full-Text | Optimal Vitamin D Supplementation Doses that Minimize the Risk for Both Low and High Serum 25-Hydroxyvitamin D Concentrations in the General Population
![Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals](https://www.rcpjournals.org/content/clinmedicine/21/1/e48/F1.large.jpg)
Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals
![D level of 70 nmol/L was associated with the lowest cardiovascular disease mortality risk. The level of vitamin D in our blood should neither be too high nor to low. : r/Supplements D level of 70 nmol/L was associated with the lowest cardiovascular disease mortality risk. The level of vitamin D in our blood should neither be too high nor to low. : r/Supplements](https://external-preview.redd.it/LGsXwQHCmLSAyY8VKKk_v3TudTYyT-bOebpvepDiUqQ.jpg?auto=webp&s=a0b109a3842736c3e57bb9bd67481315aaddfd2c)
D level of 70 nmol/L was associated with the lowest cardiovascular disease mortality risk. The level of vitamin D in our blood should neither be too high nor to low. : r/Supplements
![Vitamin D oral intermittent treatment (DO IT) study, a randomized clinical trial with individual loading regimen | Scientific Reports Vitamin D oral intermittent treatment (DO IT) study, a randomized clinical trial with individual loading regimen | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-021-97417-x/MediaObjects/41598_2021_97417_Fig1_HTML.png)
Vitamin D oral intermittent treatment (DO IT) study, a randomized clinical trial with individual loading regimen | Scientific Reports
![Frontiers | Global and regional prevalence of vitamin D deficiency in population-based studies from 2000 to 2022: A pooled analysis of 7.9 million participants Frontiers | Global and regional prevalence of vitamin D deficiency in population-based studies from 2000 to 2022: A pooled analysis of 7.9 million participants](https://www.frontiersin.org/files/Articles/1070808/fnut-10-1070808-HTML-r1/image_m/fnut-10-1070808-g001.jpg)