![Demographic characteristics and vitamin D levels of the children (n = 531) | Download Scientific Diagram Demographic characteristics and vitamin D levels of the children (n = 531) | Download Scientific Diagram](https://www.researchgate.net/publication/336722789/figure/tbl1/AS:903667045638145@1592462421254/Demographic-characteristics-and-vitamin-D-levels-of-the-children-n-531.png)
Demographic characteristics and vitamin D levels of the children (n = 531) | Download Scientific Diagram
![PDF) Optimal serum 25-hydroxy-vitamin D [Infographic] Updated 2021 Feb 5 | Alex Vasquez - Academia.edu PDF) Optimal serum 25-hydroxy-vitamin D [Infographic] Updated 2021 Feb 5 | Alex Vasquez - Academia.edu](https://0.academia-photos.com/attachment_thumbnails/65617330/mini_magick20210205-17974-2dy8iz.png?1612564494)
PDF) Optimal serum 25-hydroxy-vitamin D [Infographic] Updated 2021 Feb 5 | Alex Vasquez - Academia.edu
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 -
![Dr Sudhir Kumar MD DM on X: "Normal vitamin D level is > 75 nmol/L. Levels above 125 nmol/L is a cause of concern. So, the best level is between 75-125 nmol/L. ( Dr Sudhir Kumar MD DM on X: "Normal vitamin D level is > 75 nmol/L. Levels above 125 nmol/L is a cause of concern. So, the best level is between 75-125 nmol/L. (](https://pbs.twimg.com/media/Fvle3myaYAcWpTE.png)