Randomly overdosing or megadosing on single nutrients creates a risk of significantly imbalancing one's system, and it makes little difference whether or not water-soluble vitamins such as Vitamin C, or B-Vitamins are used. While excessive intake of fat-soluble vitamins, as well as overdosing on any number of minerals can be toxic, even water-soluble nutrients can cause side effects, or do an amazing amount of damage when regularly overdosed on during their sometimes short journey through the body... 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...