Fig. 2.

Race- and gender-specific, age- and body mass index-adjusted average systolic blood pressure according to the serum magnesium level in participants without cardiovascular disease [54]. Magnesium serum levels were inversely related to systolic blood pressure except in black women in whom there was a U-shaped association. Subjects who received anti-hypertensive medication were excluded from the analyses (ARIC study). Reprinted from Ma et al. [54], Copyright (1995), with permission from Elsevier.