Since low calcium and or low magnesium-induced muscle spasms go hand in hand with disturbances of bone mineral metabolism, it may be worthwhile to be evaluated for other, possibly more serious medical problems such as Osteopenia or Osteoporosis, whereby additional preventive supplements, or other dietary adjustments may be indicated. Those suffering from leg or calf cramps that are due to insufficient potassium intake should be aware of - or at least use their symptoms as a warning sign - that ongoing low potassium levels increase the risk for Cardiovascular Disease and or Stroke... Full Text

Manganese may help with some symptoms of Parkinson's disease such as muscle rigidity and twitching...
Research shows that phytosterols such as beta-sitosterol may help normalize the function of natural killer cells and T-helper lymphocytes...
Iron deficiency may be suspect with some forms of ADHD. 84% of children with ADHD were found to have abnormally low levels of ferritin...
A high intake of B Vitamins can trigger heart palpitations, HBP, major complications in patients with congestive heart disease...