The diet usually works on the analysis that the body has been tricked through consuming a certain amount of calories, and that the body won't feel any hunger. The body has been known to go into a defense mode, and metabolism is slowed down very low. Physicians and experts do not always advise people to try the pro ana abc diet, as calories consumed each day should not fall below 1000/1500 calories.
People that fall below the minimum amount of calories usually are at risk of gaining every pound back that they have worked so hard to lose. There are also other risks that are involved with being on the diet, and these risks include having a low blood sugar, and low energy levels. People often can experience dizziness if their blood sugar gets too low. Another risk of the diet is that the diet allows people to lose more water than fat deposits, and when the diet is finished, the body does keep saving calories and storing fat. As the body keeps storing fat, people are at risk of gaining weight back this way also.