It’s very difficult to measure whether a conception was intended. But those data are vital to understanding women's choices.
Women face extraordinary difficulty in seeking the birth control method of sterilization due to sexist reproductive norms.
July marks 50 years of Pope Paul VI's encyclical prohibiting contraceptive use. For many years prior to it, the church had not been so explicit on its stance. How did it become such a thorny issue?
Over the past 45 years, women have married later, attained higher education and joined the workforce in record numbers. Could it all be turned back?
There are more than 30 different types of contraceptive pills. But brand names such as Microgynon, Levlen, Yaz and Brenda give little indication of the ingredients, dose or who should use them.
We usually focus on the physical health effects of the pill, yet the most common reason women stop or change the pill is mental health side effects.
It's been 100 years since a book written by Marie Stopes revolutionsed the way that people talked about sex.
Medicinal chemists are tweaking a natural molecule that can be a deadly poison – a modified version might work as a nonhormonal male contraceptive.
Long-acting reversible contraceptives are more reliable than other methods of contraception and most women are happy with them.
What do intercontinental missiles and Apple's app store have in common? Alvin M Weinberg.
It seems counterintuitive that cuts to teen-pregnancy prevention programmes should lead to fewer pregnancies, but that's what the latest research finds.
Understanding where teens learn about sex and how that influences them can help us find ways to encourage healthy sexual behaviors, such as using condoms and birth control.
Why research into male contraception keeps hitting the buffers.
Side effects have led to the plug being pulled on the male contraceptive injection. But what about those experienced by women on the pill?
A look at the policy proposals that will impact family life.
Providing women with a range of reproductive health options – from abortions to IUDs – is not only essential for their financial security but good for the economy as well.
Better access to birth control and safe, legal abortions in Latin America could save lives. But carving out Zika-related exceptions in existing restrictions might not go far enough to achieve this.
Democratic candidates support access to contraception, while candidates from the Republican Party favor policies that could severely restrict access to contraception.
Do the countries affected by Zika have the capacity to deal with a baby boom if pregnancies are delayed?
Enforcing the birth control policy left millions of children with no identity.