<human>:  When did the first birth control pill come out?
<bot>: The first birth control pill was called Diane 35, and it was introduced in the 1960s. It was a combination of estrogen and progesterone. The hormones were taken orally, and it was marketed to women who had trouble getting pregnant. It was also marketed to women who wanted to space out their children. It was a popular birth control pill for a while, but it wasn't very effective.