Impotence : Low potassium, very high or low zinc, high low manganese, high low iron, low iodine, low B-complex, low Vitamin E,. Check for cardiovascular disease atherosclerosis. Sufficient zinc is required to achieve an erection, and sufficient potassium is required to maintain an erection... 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...