Some women gain weight while using the Pill. Some women lose weight while using the Pill. Hormones in the Pill may cause changes in appetite. These changes occur over several years and may cause some weight loss or gain. Some women have temporary fluid retention during the first month or so after starting the Pill.
Some women gain weight as a side effect of estrogen use.
This weight gain develops in the hips, thighs, and breasts. It is usually noticed after several months on the Pill. The Pill may aggravate depression for some women. This may lead to increased eating. Changes in workplace, exercise habits, lifestyle, and diet may also lead to weight gain or loss.