February 11, 2019
Despite being used for nearly 60 years, researchers have some questions about certain aspects of contraceptive birth control pills. Namely, how they affect the brain.
Most women know the not-so pleasant known side effects of birth control — like potential weight gain — but a new study out of the University of Greifswald in Germany found another side effect: birth control pills might blur a woman's emotional recognition capabilities.
The research, published Monday in the journal Frontiers in Neuroscience, found women taking the pill to have misidentified facial emotions 10 percent more frequently than participants not taking the pill, Live Science explains.
To determine these findings, researchers analyzed two groups of healthy women between the ages 18 and 35, including woman who took oral contraceptives and some who did not, MindBodyGreen reports, and didn't initially finding anything that jarring.
According to MindBodyGreen:
The team found both groups to be equally good at recognizing easy, black-and-white facial expressions on a computer during an emotional recognition test. But the women who took oral contraceptives were 10 percent worse on average than non-users at interpreting emotions when the facial expressions became more complex.
Senior author Dr. Alexander Lischke of the University of Greifswald, Germany explains in a press release why this misunderstanding of emotions may be occurring in contraceptive pill users:
"Cyclic variations of estrogen and progesterone levels are known to affect women's emotion recognition, and influence activity and connections in associated brain regions," he said. "Since oral contraceptives work by suppressing estrogen and progesterone levels, it makes sense that oral contraceptives also affect women's emotion recognition However, the exact mechanism underlying oral contraceptive induced changes in women's emotion recognition remains to be elucidated."
The researchers believe more examination is needed before users need to be concerned about using of birth control pills, the release explains. The hope is that future studies will be able to determine whether contraceptives alter women's ability to initiate and maintain relationships.
“If this turns out to be true, we should provide women with more detailed information about the consequences of oral contraceptive use,” Lischke explains.