Low potassium - particularly in the elderly - frequently results in weak bladder muscles and potential incontinence when coughing or laughing. Under those circumstances, bladder infection-like symptoms can also be experienced, however they are somewhat different from a conventional bacterial cystitis that goes hand in hand with high potassium levels, in that symptoms improve by raising potassium to normal levels, provided there are no structural causes such as bladder prolapse. Interstitial Cystitis frequently falls into this same low-potassium category... 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...