When people supplement certain herbs to cleanse their liver, they will always affect manganese and iron status. For instance, by taking Devil's Claw on an ongoing basis, they will eventually raise manganese and iron levels. On the other hand, taking higher amounts of Milk Thistle will in time decrease manganese and iron stores, which can be an advantage with hemochromatosis, where regular consumption of milk thistle, RNA DNA, zinc, magnesium and Vitamin B2 - as individually matched - will return iron levels closer to normal, and frequently eliminate the need for phlebotomies... 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...