# Vitamin D

**URL:** <https://forum.barbellmedicine.com/t/vitamin-d/14339>\
**Category:** Nutrition Q&A \[Moderated\]\
**Created:** [February 7, 2024, 10:32pm UTC](https://forum.barbellmedicine.com/t/vitamin-d/14339 "2024-02-07T22:32:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Federman828](https://avatars.discourse-cdn.com/v4/letter/f/6f9a4e/32.png) [@Federman828](https://forum.barbellmedicine.com/u/Federman828)\
**Post date:** [February 7, 2024, 10:32pm UTC](https://forum.barbellmedicine.com/t/vitamin-d/14339/1 "2024-02-07T22:32:11Z")

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I have listened to the podcast on Vitamin D. Shortly after a friend with late onset Type 1 diabetes and liver issues (both autoimmune issues) was recommended by a physician to take a vitamin D supplement. Any research suggesting that this may in fact help with blood sugar stability or liver function?

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**Author:** ![Jordan\_Feigenbaum](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.barbellmedicine.com/jordan_feigenbaum/32/1315_2.png) [@Jordan\_Feigenbaum](https://forum.barbellmedicine.com/u/Jordan_Feigenbaum)\
**Post date:** [February 8, 2024, 3:46pm UTC](https://forum.barbellmedicine.com/t/vitamin-d/14339/2 "2024-02-08T15:46:27Z")

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No, supplemental vitamin D does not improve blood sugar management, liver function, or type 1 diabetes outcomes. That said, there may be more to your friends’ condition that _would_ benefit from vitamin D supplementation, e.g. if there’s bone- or kidney-related issues, for example. I would probably let it lie, outside of seeking more information from the doctor if they’re curious.