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Contraceptive pills may affect fear-regulating brain areas in women – World News Network

California [US], November 7 (ANI): Oral contraceptives are used by more than 150 million women globally. The most prevalent variety is combined OCs (COCs), which are made comprised of synthetic hormones. Sex hormones have been shown to influence the brain network involved in fear processing.
A Canadian team of researchers has now explored the current and long-term consequences of COC use, as well as the influence of naturally occurring and synthetic sex hormones on fear-related brain areas, the neural circuitry through which fear is processed in the brain.
“In our study, we show that healthy women currently using COCs had a thinner ventromedial prefrontal cortex than men,” said Alexandra Brouillard, a researcher at Universite du Quebec a Montreal and first author of the study published in Frontiers in Endocrinology.
“This part of the prefrontal cortex is thought to sustain emotion regulation, such as decreasing fear signals in the context of a safe situation. Our result may represent a mechanism by which COCs could impair emotion regulation in women.”
“When prescribed COCs, girls and women are informed of various physical side effects, for example, that the hormones they will be taking will abolish their menstrual cycle and prevent ovulation,” Brouillard explained. However, the effects of sex hormones on brain development, which continues into early adulthood, are rarely addressed. Considering how widespread COC use is, it is important to better understand its current and long-term effects on brain anatomy and emotional regulation, the researchers said.
The team recruited women who were currently using COCs; women who used COCs previously but did not at the time of the study; women who never used any form of hormonal contraception; and men.
Comparing these groups allowed the researchers to see if COC use was associated with current or long-term morphologic alterations as well as to detect sex differences since it is established that women are more susceptible to experiencing anxiety and stress-related disorders than men.
“As we report reduced cortical thickness of the ventromedial prefrontal cortex in COC users compared to men, our result suggests that COCs may confer a risk factor for emotion regulation deficits during their current use,” Brouillard said.
The impacts of COC use, however, may be reversible once intake is discontinued, the researchers said. Given that the vmPFC effect found in current users was not observed in past users, the findings did not support the lasting anatomical effects of COC use. This, the researchers wrote, will need to be confirmed in further studies.
There is still much to learn when it comes to women’s brains and how they are impacted by COC use. For example, Brouillard and team are currently investigating the impact of age of onset and duration of use to delve further into the potential lasting effects of COCs. Given that many teenage girls start using COCs during adolescence, a sensitive period in brain development, user age might also impact reversibility.
Pointing to limitations in their study, the scientists said that no causal relationship can be implied between COC use and brain morphology and that generalization of their results to a general population may be limited. The researchers also cautioned that drawing conclusions from anatomical findings to behavioural and psychological impact is not possible at this point.
“The objective of our work is not to counter the use of COCs, but it is important to be aware that the pill can have an effect on the brain. Our aim is to increase scientific interest in women’s health and raise awareness about early prescription of COCs and brain development, a highly unknown topic,” concluded Brouillard. (ANI)


Disclaimer: This story is auto-generated from a syndicated feed of ANI; only the image & headline may have been reworked by News Services Division of World News Network Inc Ltd and Palghar News and Pune News and World News

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