Weight gain does not always occur as the same rate of fattening in all parts of the body. The body usually stores a large portion of adipose tissue in the abdomen and waist. For this reason, women mostly complain about their sagging and fattened abdominal region. People who have lost excessive weight as a result of dieting or obesity surgery frequently develop loosening, sagging and stretch marks in the abdomen.
Tears occur in the tissues between abdominal muscles in the fattened abdominal region and cause detachment of muscles ensuring flatness of the abdomen from each other. With the pressure exerted by the internal organs, the abdominal region acquires a distended shape and loosening, sagging and stretch marks occur in the abdomen due to the adipose tissue's own weight. It is also often impossible to remedy tears in abdominal muscles and abdominal skin deformations by doing exercise and dieting.