Despite 40 years of use, myths still persist about the oral contraceptive pill, especially in relation to future fertility, Danish researchers report.

In their online survey of more than 2500 women, they have found that two-thirds of current users have wondered whether their combined oral contraceptive pill would affect their future fertility.

Even though Danish women have a high level of general reproductive knowledge, the researchers say they still found significant misapprehensions and concerns regarding the pill and future pregnancy chances.

They conducted an online survey on concerns and knowledge of future fertility of 1283 current users and 1006 past users recruited from Facebook and planning clinics.