Common Corpus No. 8
For all women, for life
Welcome back to Common Corpus, our weekly curation of the best evidence-based women’s health content designed to help you navigate, optimize, and advocate for your well-being at every stage of life.
This week, we explore new research on why women’s fertility declines with age, the little-known but common condition of post-mastectomy pain, how hormones affect women and men’s hearing differently, promising advances in treating vulvar pain, and much more.
We hope you find this week’s resources insightful, useful, and empowering as you navigate your own health journey. If you’re enjoying Common Corpus and finding it useful, please share it with anyone else who might be interested.
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News & Noteworthy
What’s making the news in women’s health
New research on why women’s fertility declines with age
Emerging research is trying to answer a key questions around ageing and fertility: why do women’s eggs deteriorate with age? The general explanation of declining fertility with age has been well-known for a long time: that age increases the risk of miscarriage, often due to eggs containing the wrong number of chromosomes (aneuploidy). New research suggests that the decline of certain proteins may be an important clue as to why aneuploidy (an incorrect number of chromosomes) occurs more often in older eggs.
While men produce sperm throughout their lives, women are born with a lifetime supply of oocytes, the precursor cells that develop into eggs.
In one of the final stages of meiosis where the oocyte develops into an egg, the paired copies of chromosomes are meant to separate in an orderly fashion, leaving the egg with only one copy of each chromosome. The risk with age, however, is that this process is disrupted and the egg receives the wrong number of chromosomes.
Recent research suggests that part of the explanation of why aneuploidy occurs and why the likelihood of it increases with age has to do with the loss of cohesion proteins (that maintain the cohesion of chromosomes in the oocyte) as well as proteins that protect the cohesion proteins, called Shugoshin (Japanese for ‘guardian spirit’) proteins.
Emerging research is exploring the role of Shugoshin proteins in protecting cohesion proteins and maintaining the cohesion of chromosomes as women age. Scientists have been working on restoring Shugoshin protein production by microinjecting mRNA that coded for the protein. They were able to increase the number of healthy eggs with the right number of chromosomes from about 50% to nearly 75%.
Fertility treatments have tended to focus on retrieving as many eggs as possible in the hopes of having a good number of healthy eggs with the right number of chromosomes. This new research shifts the focus to trying to improve the cellular quality of older eggs and to preventing age-related chromosomal abnormalities (aneuploidy).
While the research is emergent, and is not likely to explain all chromosomal errors, it adds to the growing body of research exploring fundamental questions about the development of eggs that could lead to new options for preserving fertility and possibly restoring it in some instances.
The takeaway: This research matters immensely in the context of the trend towards delaying childbearing beyond the biologically optimal window for reproduction. By shifting the scientific focus from simply retrieving and freezing eggs to actively repairing their structural integrity, these emerging technologies could fundamentally revolutionize fertility treatments and offer a profound new wave of hope for genetic parenthood.
LINK (paywalled; hence the longer summary)
The hidden reality of post-mastectomy pain
Post-Mastectomy Pain Syndrome (PMPS), a debilitating but frequently overlooked condition that leaves some breast cancer survivors grappling with chronic, long-term pain.
Despite mastectomy being a life-saving surgical procedure, a staggering percentage (some estimates up to 50%) of mastectomy patients experience persistent, nerve-related chest and arm pain that lasts for months or even years post-surgery.
This chronic pain is typically caused by unavoidable nerve damage or scar tissue formation during the removal of breast tissue and underarm lymph nodes.
Because the immediate focus is understandably on eradicating the cancer, both patients and doctors often fail to adequately discuss long-term pain management, leading many women to mistakenly believe they must suffer in silence.
Symptoms often manifest as severe burning, tingling, numbness, or shooting pain in the chest wall or armpit, which can profoundly limit mobility, interrupt sleep, and erode a woman’s emotional well-being.
Medical experts urge patients not to accept chronic discomfort as the “price of survival,” advocating instead for early, targeted interventions like specialized physical therapy, nerve blocks, and nerve-targeting medications.
The takeaway: This report is vital reading for breast cancer survivors, those preparing for preventive or cancer-related mastectomies, and the oncologists and surgeons who guide their recovery. This article highlights the need for more research on PMPS, more discussion of this possible side effect, more proactive identification, and management of pain with patients.
The Latest Research
The latest in academic research in women’s health
The crucial role of hormones in hearing differences between men and women
A new presentation from the 190th Meeting of the Acoustical Society of America highlights the significant, biologically driven differences in how men and women process sound. Historically, medical research on hearing has generalized male data to women, ignoring the profound impact that hormonal changes, which influence cellular behaviour in the brain’s auditory processing centres, have on hearing. The research reveals that while men typically show an earlier, more gradual auditory decline, women experience hearing fluctuations tied to their menstrual cycles and face sharper changes during menopause. This research is yet unpublished, but suggests that a “one-size-fits-all” approach to audiology is problematic for women and the need for studying sex-dependent auditory variability. Ultimately, more research is needed but this represents a first step in paving the way for more accurate diagnoses and personalized management of hearing loss for everyone.
Listen & Learn
The latest in women’s health audio content worth your time
Cervical cancer, birth control, vulvar pain, gaslighting with Dr. Andrew Goldstein
In this wide-ranging and insightful episode of You Are Not Broken, vulvovaginal expert Dr. Andrew Goldstein dismantles the medical gaslighting surrounding painful sex, proving that vulvar pain is a physical reality rather than something "all in your head." He discusses cervical cancer, emphasizing that life-saving HPV vaccines and regular testing are absolutely non-negotiable for early detection and prevention. Shifting focus to painful intercourse, Dr. Goldstein explains that vulvar pain often stems from biological root causes, such as an abnormal overgrowth of nerve endings or the prolonged use of oral birth control pills that chronically suppress essential local hormones. He also discusses Ehlers-Danlos Syndrome and the fascinating connection between hypermobility and vulvar pain, as well as the emerging research on mast cells (which we typically associate with allergies) and their role in pelvic pain, including vulvodynia and endometriosis. This is a highly illuminating conversation on some of the latest research on vulvar and pelvic pain, concluding with a simple but deeply important call to action from Dr. Goldstein: “Women’s pain needs to be believed and relieved.”
The Global Perspective
Women’s health around the world
The devastating gender gap in Ebola outbreaks
In a stark warning regarding the current Ebola outbreak in the Democratic Republic of the Congo and Uganda, UN Women highlights a devastating, 50-year pattern: women are historically and overwhelmingly overrepresented in Ebola deaths. This extreme disparity does not occur because the virus is biologically more lethal to females, but because deeply entrenched gender roles (such as domestic caregiving, preparing bodies for burial, and performing front-line healthcare duties) put women in direct, constant contact with the infected. Additionally, pregnant women face nearly a 100-percent rate of adverse pregnancy outcomes due to their frequent interactions with compromised healthcare systems, while general quarantine measures simultaneously increase their risk for gender-based violence. This exposes how societal expectations and gender inequalities are exacerbated during health crises, transforming unpaid domestic labor and caregiving into a fatal occupational hazard. Ultimately, this urgent call to action underscores that global disease response cannot succeed unless governments and health agencies put gender inequalities at the centre of decision-making.
Common Interest
Quick hits that we found interesting, thought-provoking, or useful this week
Continuing on the topic of vulvodynia, the dramedy Lady Parts, based on the true story of a woman undergoing a vulvar vestibulectomy, offers a humorous and raw look into the experience of vaginal pain and treatment that few women talk about but many experience. LINK
Dr Sara Berg offers an eloquent and important reminder to women to ditch the deeply conditioned "sorry to bother you" reflex and start unapologetically claiming the space, time, and attention they deserve in everyday life. LINK