"Examples of low Magnesium and High Blood Pressure with other complications
"Nature’s Calcium Channel Blocker" is the name they give to magnesium because it does what Calcium channel antagonists do, block calcium. It also modulates vascular tone.
"•First, Dr. F. Batmanghelidj MD explains that salt is not bad for you. It does not raise the blood pressure. It is the insufficiency of other minerals that normally hold on to and keep water inside the cells that causes a rise in blood pressure. Given in conjunction with other minerals, salt will actually lower blood pressure to normal levels." http://www.health-benefit-of-water.com/sea-salt.html