The harmful effects associated with weight loss depend, among other things, on the means used, whether or not the lost weight is maintained, the percentage of weight lost over a given period, the speed of the weight lost, the frequency of weight loss attempts. , the state of health of the person and their physiological characteristics. These adverse effects are mostly iatrogenic (caused by the treatment). Adverse effects associated with any weight loss process include constipation or diarrhea, low blood pressure, headache, fatigue and dizziness. More serious consequences have also been associated with weight loss, such as cardiac arrhythmia, electrolyte imbalances (Gregg & Williamson, 2002), gallstone formation, and loss of bone mass, often associated with osteoporosis. Effects of Repeated Weight Loss Attempts Prospective studies in adolescent girls and in an adult population have demonstrated the responsibility of weight loss attempts for long-term weight gain. Cont...