Notably, vitamin D tends to undergo two hydroxylation steps to become active in the body
Studies have shown that magnesium is beneficial in activating vitamin D in the liver and kidneys, said Dr Manjusha Agarwal, ...
Nature11 天
Urinary Metabolites in Parkinson's Disease
high urinary concentrations of tryptamine may be associated with some cases of the disease. This suggests that in such cases tryptamine hydroxylation is defective.