birth control
"If gaining weight isn't a big deal for you then go right ahead. I gave this birth control 2 chances! And both times I got FAT! Gained over 30 pounds with the depo shot. The first time I gave it over a year. My period completely stopped which was awesome, was effective since I never got pregnant. The only side effect was the massive weight gain. I got on another form of birth control and about 2 years later I decided to give the shot one more chance and this time maybe be more active and work out, eat better etc. sure enough no matter how healthy I ate or worked out I managed to still gain 30+ pounds. Will never get on the depo shot ever again. It took me about a year to naturally lose all the weight gain."