Magnesium helps in over 300 enzymatic functions other key functions of the body. Without enough magnesium, calcium cannot be used to perform work. Without enough calcium you may experience tooth decay, muscle spasms, leg and back cramps, brittle bones.[url=http://www.angstrom-mineral.com/angstrom-minerals/angstrom-calcium-magnesium.html]Calcium and Magnesium[/url]