Some girls, who used to be slim prior to their marriage, gain weight gradually after marriage. This is due to the changed eating habits or eating rich food to which they might not be used to previously. Perhaps a more care free & comfortable life is also to be blamed for this. This is acceptable to them as well as to their spouses now to consider their weight gain as a sign of good health until they become pregnant. Obesity right from the first month of pregnancy has its own disadvantages. The fatty tissues in the abdomen make it difficult for the expanding uterus, as the months advance exert great pressure on the bladder & bowels, disturbing the function of these waste eliminating organs. Wrong conceptions about the needs of a pregnant woman that she should eat double the amount of food to feed her and her child to be born and she should rest and relax more to preserve her energy for the time of labour. Nothing is near the truth, because the correct way of sensible eating & mild exercises & activities till the time of delivery facilitated a normal & comfortable delivery of a healthy child.

While in some cases there is reduction in weight after childbirth, in other, the young mothers keep gaining weight & remain obese for the rest of their lives. Generally two reasons can be attributed for obesity after childbirth. If normal delivery of the child is not there then this deprive the young mother of normal activities & exercises after delivery, resulting in the uterus not shrinking as it should, and gradually distention of abdomen takes place. The additional nourishment consumed undergoes poor digestion and the weight keeps increasing.
Some young mothers despite normal delivery gain weight steadily because they are fed on fatty & starchy food in place of proper nutritious food under the erroneous notion that the weakness caused by labour can only be compensated by a rich diet. Sometimes young mothers, after delivery is also make rest more than it is necessary. Just as exercises is a must till almost the last stages of delivery for easy delivery, mild exercise after delivery is necessary for the contraction of the uterus to its original size. But exercise becomes more difficult if there is a weight increase. There fore, obesity worsens the condition.

Women, who use contraceptive devices, oral contraceptives on a regular basis also tend to become obese. This is due to the effect on the hormones contained in those drugs.