Meta-analysis -- 'Dietary magnesium intake and the risk of cardiovascular disease, type 2 diabetes, and all-cause mortality: a dose–response meta-analysis of prospective cohort studies', BMC 2016
"...Conclusions
In conclusion, we observed significant inverse correlations between dietary magnesium intake and the risk of stroke, heart failure, diabetes, and all-cause mortality; in contrast, we found no correlation between dietary magnesium intake and the risk of coronary heart disease or total cardiovascular disease. Our findings underscore the notion that increasing the consumption of magnesium-rich foods may be beneficial to overall health. In the future, large prospective randomized controlled trials should help identify the putative causal role that magnesium plays in reducing the incidence of these diseases."

read more/full paper: http://bmcmedicine.biomedcentral.com/articles/10.1186/s12916-016-0742-z

Although studies have examined the association between dietary magnesium intake and health outcome, the results are inconclusive. Here, we conducted a dose–response meta-analysis of prospective cohort studies in order to investigate the correlation between magnesium intake and the risk of cardiovasc...