Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. ELectrolytes play a vital role in maintaining homeostasis within the body. THey help to regulate myocardial and neurological function, fluid balance, oxygen delivery, acid-base balance and much more. ELectrolyte imbalances can develop by the following mechanisms: excessive ingestion; diminished elimination of an electrolyte; diminished ingestion or excessive elimination of an electrolyte. THe most common cause of electrolyte disturbances is renal failure.THe most serious electrolyte disturbances involve abnormalities in the levels of sodium, potassium, and/or calcium. OTher electrolyte imbalances are less common, and often occur in conjunction with major electrolyte changes. CHronic laxative abuse or severe diarrhea or vomiting can lead to electrolyte disturbances along with dehydration. PEople suffering from bulimia or anorexia nervosa are at especially high risk for an electrolyte imbalance.