Tin toxicity - or its health hazards - documented over the last 200 years in humans has been linked to the consumption of foods or beverages that were stored in tinned, unlacquered containers under long-term, low pH conditions, and where levels of several hundred to several thousand mg kg were ingested. Symptoms were limited to mostly gastrointestinal complaints such as nausea, abdominal pain and vomiting, with excess tin being rapidly excreted, and no long-term negative health or toxic effects reported... 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...