While it's possible for hormonal birth control pills to decrease libido, it's a complex issue. Some women have reported no change or even an increase in libido, as well as a decrease. Libido is also influenced by factors like social stress and relationships, making it hard to draw conclusions about the pill's effect on its own. Yes, hormonal birth control (pills containing estrogen and progestins) can suppress ovulation by changing the hormonal cascade that triggers it. No ovulation means that the natural libido spike that some women experience during their fertile window will not happen.  Some studies have stated an increase in libido. In a 2013 review of studies published since the 1970s on the pill and sexual function, researchers found that more than 6 in 10 people using the pill had no changes in libido, more than 2 in 10 had an increase in libido, and about 1 in 10 did report a decrease in libido.