Some doctors refuse to acknowledge that the Pill can cause excessive weight gain. Although your doctor might switch you to a different pill, it could be because you believe it will help rather than because he or she thinks it will.
Weight gain that occurs after you start using the Pill may be caused by fluid retention or estrogeninduced fat deposits in the thighs, hips, and breasts. It may also be the result of reduced physical activity or increased intake of food. (The androgenic effects from the progestins in the Pill can cause an increase in appetite.)
Switching to lower dose pills or to pills with less progestin content can help, but increasing exercise and reducing caloric intake is often the best solution.
