Uptake of various forms of chromium, including GTF chromium is in a low 1 - 3% range, with the absorption of Chelated Chromium being usually closer to 25%, so chelated chromium is the preferable choice for specific medical applications. For instance, when chromium is used for inflammatory conditions such as an acute bladder infection, taking 20,000 mcg of GTF chromium has little or no effect at all on improving the symptoms, while 2,000 - 3,000 mcg day of chelated chromium will rectify most cases of cystitis, or it can be used to resolve chronic bladder infections by having patients take a lower, preventive maintenance amount in the 500 mcg - 1,000 mcg range per day... 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...