Environmental causes that promote Alzheimer's disease include above-normal exposure to Aluminum, iron, copper, zinc, manganese, and other factors. High aluminum intake in particular inhibits choline transport and reduces neuronal choline acetyltransferase. This may contribute to acetylcholine deficiency, which is a key component of Alzheimer's disease. In some municipalities, drinking water contains very high levels of added aluminum... 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...