High SHBG & Low Low Low Vitamin D Despite Decent Sun Exposure - Why?

[thisoldtown1978]

I know that low Vitamin D can cause high SHBG but I get good sun exposure. Magnesium? Damaged liver?

 

[baccheion]

I know that low Vitamin D can cause high SHBG but I get good sun exposure. Magnesium? Damaged liver?

Direct sun exposure? It could be magnesium insufficiency. Better to just supplement vitamin D. Even 2,000 IU.

 

[Sinjin]

Nathan Hatch says that low biotin inhibits vitamin d production

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