Sources Of Lithium • Small amounts are found in a wide variety of foods • Lubricating grease • Batteries • Ceramics and glass • Used in medication to treat bipolar disorder Functions Of Lithium •Decreases manic symptoms in manic-depressive patients •May modulate the conversion of essential fatty acids into prostaglandins •May stabilize serotonin transmission •Anti-aggressive action Roles In The Body •Research by Frazier found that those patients who were helped by lithium experienced increased uptake of sodium through their cell membranes. •According to Sheard, lithium can replace sodium in the cells, and its structure resembles calcium and magnesium. It appears to have the same stabilizing effect on nervous cells as calcium and magnesium. Symptoms Associated With A Lithium Deficiency Deficiency is associated with excessive aggressiveness, manic states and depression. Symptoms Associated With A Lithium Toxicity Disturbed mineral transport and fluid balance, nausea, vomiting, tremors, thirst, excessive urination, thyroid swelling, weight gain, drowsiness, confusion, disorientation, delirium, skin eruptions, possible kidney damage, and even seizures, coma and death.