While electrolyte or other nutritional imbalances can be a cause or contributing factor for cramping of one's toes, or toe spasms also, if one never experiences spasms or cramps in other parts of the body, then they may occur as a result of poor circulation, wearing tight shoes, or sitting in a particular position for longer periods of time. Briefly exercising or massaging one's toes, or taking a short walk usually provides relief and resolves the problem... 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...