How can low calorie diets hinder long-term weight loss maintenance?

"diet" for life. Low calorie diets (1200-1800 depending on your gender, height, and body size) have been shown to be necessary for long=term weight loss maintenance. The problem is the idea of a "diet" being a temporary event rather than a life long change in eating behaviors. Select a "diet" that you can stick with for life and that will greatly improve your chances of long-term maintenance.
Gall Stone Formation. Potentially fatal heart rhythm disturbances may occur. These diets cause a rapid shift in water balance, especially in the early phases, which can lead to dangerous alterations in the balance of electrolytes that are important to normal heart function and rhythm (especially potassium). Low calorie diets are likely to be nutritionally insufficient. There is an increased gallstone formarmation.