Which birth control pill is least likely to cause weight gain?

Birth control pills have gotten a bad rap as they don't directly cause weight gain. They can, however, cause increased appetite. Different women react differently to the pills, though most do well. To minimize any effects, start with a pill with only 20 mcg of estrogen, or even 10 mcg. Otherwise the pills differ by their progestins so if you are unhappy with one, try another.