Subgroup analyses showed that the association between MDS and cognitive impairment was particularly pronounced in individuals who were sedentary or had a dietary Mg intake ≤420 mg/d.
Conclusions and implications: MDS may serve as a predictor of cognitive impairment, with sedentary lifestyle and low dietary Mg intake strengthening this association. 

https://pubmed.ncbi.nlm.nih.gov/40659052/