CLASS: 
Mineral
ROLE:Energy metabolismCalcium metabolismNerve and muscle function
SOURCES: Green vegetablesGrains
RECOMMENDED DAILY INTAKE (RDI): 320 mg Men270 mg Women
DEFICIENCY STATE: Tremor, excitability and tetanyMuscle weaknessConvulsionsApathy, depression, personality changeAnorexia, nauseaCardiac arrhythmia leading to cardiac arrest and death
OVERDOSE STATE: Decreased nerve and muscle functionCardiorespiratory failure
RISKS: AlcoholismTeenagersElderlyPregnancy/lactation
DIAGNOSIS: Blood tests
OTHER NUTRIENT INTERACTIONS: CalciumPotassiumVitamin B1