Asking question on behalf of my wife. How does birth control (pill or IUD) affect weight loss? Wife is 5'6" 125 lbs. and fairly lean (she wants to be smaller/leaner). Eats clean and does cardio 4-5x/week and lifts 3 days/week. Her weight will not decrease to save her life and was wondering if the IUD was causing her body to hold on to last bit of fat? Any females using Erase to lower estrogen? Is that safe for females? Thanks.