Birth Control Pills May Shrink Brain, Increase Anger and Depression
GMI Research Group, Guest
Women who fill a prescription for Ortho Tri-Cyclen®, a popular form of oral birth control, will note the inclusion in the pill pack of a lengthy insert detailing grave risks, along with side effects that are considered “not serious” such as nausea, vomiting, bleeding between menstrual cycles, weight gain, breast tenderness and difficulty wearing contact lenses.[i]
A study of birth control pills has found risks that aren’t yet detailed in these inserts, but are grave enough to make any woman taking or considering taking the pill, pause in concern. Presented in December 2019 at the annual meeting of the Radiological Society of North America (RSNA), the as-yet unpublished study found that women taking birth control pills had significantly smaller hypothalamus volume, compared to women not taking the pill.
Located at the base of the brain above the pituitary gland, the hypothalamus is responsible for critical bodily functions, including hormone production, mood, appetite and body temperature regulation, quality of sleep and heart rate.[ii] This small but important brain region is also responsible for regulation of emotional responses or mood, as well as sexual drive.[iii]
Study Shows Link Between Birth Control Pills and Brain Shrinkage
In this eye-opening study, a team of researchers headed by Michael L. Lipton, M.D., Ph.D., FACR, professor of radiology at the Gruss Magnetic Resonance Research Center at the Albert Einstein College of Medicine and medical director of MRI Services at Montefiore Medical Center in New York City, assembled 50 healthy women, 21 of whom were taking oral contraceptives.
Participants were given functional MRI scans, allowing researchers to analyze the structural effects of extrinsic sex hormones like birth control pills on the brain’s grey matter. According to Dr. Lipton in a news release, “We validated methods for assessing the volume of the hypothalamus and confirm, for the first time, that current oral contraceptive pill usage is associated with smaller hypothalamic volume.”[iv]
In his presentation, Dr. Lipton announced that “a dramatic difference” was found in the size of the hypothalamic brain structures between women who were taking oral contraceptives and those who were not.
He further explained that there is a lack of research on the effects of contraceptives on this “small but essential part of the living human brain,” but his study shows “a strong association and should motivate further investigation into the effects of oral contraceptives on brain structure and their potential impact on brain function.”[v]
The Pill’s ‘Dangerously Unsexy’ History
Commercial contraceptives have a brief and disturbing history in the U.S. Initial versions of intrauterine devices (IUDs) and birth control pills were introduced in the 1960s and subsequently pulled from the market due to safety concerns and legal challenges from women using and being harmed by them.[vi] Complications such as blood clots, infections and even documented deaths[vii] led to lawsuits and subsequent reformulations of these original methods of mass-market birth control.
Original formulations of oral contraceptives had women receiving hormones in doses as high as 150 micrograms (µg) of estrogen and 10 milligrams (mg) of progestin.[viii] In 1989, following a recommendation by its Fertility and Maternal Health Drugs Advisory Committee, the U.S. Food and Drug Administration (FDA) ordered the removal from the market of all oral contraceptives with estrogen contents greater than 50 µg.[ix] Current formulations use 20 to 35 µg of estrogen and 1.5 mg or less of progestin.[x]
While the effectiveness of these “low-dose” contraceptives is high (generally less than one pregnancy per 100 woman-years[xi]), there remain serious risk potential when taking hormonal birth control. Potential complications from the pill include breast cancer, blood clots, heart attack, stroke, migraines, high blood pressure, diabetes and liver disease.[xii]
According to the U.S. Centers for Disease Control and Prevention (CDC), 12.6% of women aged 15 to 49 years, or approximately 6 million women in the U.S., currently use the pill as their preferred method of birth control.[xiii] Oral contraceptives can be prescribed for a variety of off-label uses such as acne, irregular periods, menstrual cramps and endometriosis-associated pain,[xiv] indicating that the overall number of women potentially affected by negative side effects is even greater.
Research Confirms Mood-Altering Effects of Hormonal Birth Control
There were other disturbing findings in our focus study, which Dr. Lipton described as “preliminary,” linking smaller hypothalamic volume to negative emotional states, specifically increased anger and depression.[xv] While rigorous science mandates that correlation is not causation, prior medical studies have amassed evidence supporting negative mood-altering effects of hormonal birth control.
Published in May 2016 in the peer-reviewed journal Social Cognitive and Affective Neuroscience, researchers concluded that hormonal contraceptives suppress oxytocin-induced “brain reward responses” to a woman’s romantic partner’s face.[xvi]
Previous research by the authors of this study showed that oxytocin release in men’s brains biased them toward perceiving their female partners as more attractive and elicited increased activity in neural reward regions, the inverse of what their subsequent study showed was happening in the brains of women taking hormonal birth control.[xvii]
Further confirmation of the negative mood effects of hormonal birth control comes via a 2019 study published in the journal Current Psychiatry Reports, titled, “Effects of Hormonal Contraceptives on Mood: A Focus on Emotion Recognition and Reactivity, Reward Processing, and Stress Response.”
The peer-reviewed paper supports these disturbing findings, summarizing, “Current evidence supports a negativity bias in emotion recognition and reactivity in HC [hormonal contraception]-users.”
Their report further states that some data indicates “a trend towards a blunted reward response and a potential dysregulation of the stress response in some HC-users.”[xviii]
Finally, a 2018 study published in Frontiers in Neuroscience summarizes their bleak findings in the name of their report, titled, “Oral Contraceptives Impair Complex Emotion Recognition in Healthy Women.” The study authors caution that the growing body of evidence supporting the negative-mood effects of hormonal contraception “should be taken into account when informing women about the side-effects of [oral contraception] use.”[xix]
Until natural, hormone-free methods of birth control are taught to every person of reproductive age, it is imperative to be aware of the risks associated with hormonal contraception. Stay abreast of the dangers of pharmaceutical drugs and the benefits of natural health by following GreenMedInfo.com, the world’s largest natural health database.
About the Author
The GMI Research Group (GMIRG) is dedicated to investigating the most important health and environmental issues of the day. Special emphasis will be placed on environmental health. Our focused and deep research will explore the many ways in which the present condition of the human body directly reflects the true state of the ambient environment.
[i] FDA.gov, ORTHO TRI-CYCLEN PATIENT PACKAGE INSERT, http://www.accessdata.fda.gov/drugsatfda_docs/label/2005/021690ppi.pdf
[ii] MedlinePlus, Medical encyclopedia, Hypothalamus, http://medlineplus.gov/ency/article/002380.htm
[iii] Healthline, Hypothalamus overview, http://www.healthline.com/human-body-maps/hypothalamus
[iv] Science Daily, December 4, 2019. www.sciencedaily.com/releases/2019/12/191204090819.htm.
[v] Science Daily, December 4, 2019. www.sciencedaily.com/releases/2019/12/191204090819.htm.
[vi] Our-bodies-Ourselves, book excerpts, birth control, a brief history of birth control in the United States, http://www.ourbodiesourselves.org/book-excerpts/health-article/a-brief-history-of-birth-control/
[vii] Our-bodies-Ourselves, book excerpts, birth control, a brief history of birth control in the United States, http://www.ourbodiesourselves.org/book-excerpts/health-article/a-brief-history-of-birth-control/
[viii] Institute of Medicine (US) Committee on the Relationship Between Oral Contraceptives and Breast Cancer. Oral Contraceptives & Breast Cancer. Washington (DC): National Academies Press (US); 1991. C, The Evolving Formulations of Oral Contraceptives. Bookshelf ID: NBK234350
[ix] Multigenerational Reproductive Toxicology Study of Ethinyl Estradiol (CAS No. 57636) in SpragueDawley Rats (Feed Studies). DIANE Publishing. pp. 27-. ISBN 978-1-4379-4231-6. Aug. 2010.
[x] Multigenerational Reproductive Toxicology Study of Ethinyl Estradiol (CAS No. 57636) in SpragueDawley Rats (Feed Studies). DIANE Publishing. pp. 27-. ISBN 978-1-4379-4231-6. Aug. 2010.
[xi] Institute of Medicine (US) Committee on the Relationship Between Oral Contraceptives and Breast Cancer. Oral Contraceptives & Breast Cancer. Washington (DC): National Academies Press (US); 1991. C, The Evolving Formulations of Oral Contraceptives. Bookshelf ID: NBK234350
[xii] Planned Parenthood, Learn, Birth Control, Birth Control Pill, How safe is the pill? http://www.plannedparenthood.org/learn/birth-control/birth-control-pill/how-safe-is-the-birth-control-pill
[xiii] Daniels K, Abma JC. Current contraceptive status among women aged 15-49: United States, 2015-2017. NCHS Data Brief, no 327. Hyattsville, MD: National Center for Health Statistics. 2018. http://www.cdc.gov/nchs/products/databriefs/db327.htm
[xiv] Noncontraceptive benefits and therapeutic uses of the oral contraceptive pill. Dayal M, Barnhart KT. Semin Reprod Med. 2001 Dec;19(4):295-303. PMID: 11727171 DOI: 10.1055/s-2001-18637
[xv] Radiological Society of North America.
[xvi] Scheele D, Plota J, Stoffel-Wagner B, Maier W, Hurlemann R. Hormonal contraceptives suppress oxytocin-induced brain reward responses to the partner’s face. Soc Cogn Affect Neurosci. 2016;11(5):767-774. doi:10.1093/scan/nsv157 PMID: 26722017
[xvii] Oxytocin enhances brain reward system responses in men viewing the face of their female partner. Scheele D, Wille A, Kendrick KM, Stoffel-Wagner B, Becker B, Güntürkün O, Maier W, Hurlemann R. Proc Natl Acad Sci U S A. 2013 Dec 10; 110(50):20308-13. PMID: 24277856
[xviii] Lewis CA, Kimmig AS, Zsido RG, Jank A, Derntl B, Sacher J. Effects of Hormonal Contraceptives on Mood: A Focus on Emotion Recognition and Reactivity, Reward Processing, and Stress Response. Curr Psychiatry Rep. 2019;21(11):115. Published 2019 Nov 7. doi:10.1007/s11920-019-1095-z. PMID: 31701260
[xix] Pahnke R, Mau-Moeller A, Junge M, et al. Oral Contraceptives Impair Complex Emotion Recognition in Healthy Women. Front Neurosci. 2019;12:1041. Published 2019 Feb 11. doi:10.3389/fnins.2018.01041. PMID: 30804733
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