Centre for Menstrual Cycle and Ovulation Research

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Centre for Menstrual Cycle and Ovulation Research

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The UBC Centre for Menstrual Cycle and Ovulation Research (UBC-CeMCOR) is a research centre focusing on scientifically reframing women’s menstrual cycles, ovulation and lifecycle with a woman’s perspective.

03/08/2026

✨ Celebrating a pioneer in women’s health science ✨

This International Women’s Day, CeMCOR founder Dr. Jerilynn Prior highlights the remarkable legacy of Dr. Eleanor Hill Venning, a Canadian scientist whose groundbreaking work in the 1930s made it possible to measure progesterone in urine for the first time.

Her discovery transformed how researchers understand ovulation, hormones, and the menstrual cycle—and continues to shape modern tools and studies today.

Read Dr. Prior’s reflections on Dr. Venning’s pioneering contributions and why her work still matters: https://cemcor.ubc.ca/news/celebration-of-dr-eleanor-venning-on-international-womens-day-2026-march-newsletter/

03/07/2026

📣 In this latest article, Dr. Jerilynn Prior explores the idea of breast self-knowledge—becoming familiar with what is normal for your body so you can recognize changes early.

Developing awareness of your breasts can help you notice differences in texture, tenderness, or new lumps and seek care when something doesn’t feel right.

Learning what’s normal for you is an important step toward understanding your health.

Read the full article on our website — https://cemcor.ubc.ca/news/breast-self-knowledge/

02/09/2026

Severe period cramps shouldn’t be something you just “push through”

UBC is urgently recruiting women+ aged 16-35 for a research study on managing painful menstrual cramps — and participation comes with real benefits!

✨Why Join?
• Help improve treatment options for menstrual pain
• Learn more about your own cycle
• Receive 90 FREE ibuprofen tablets
• Only 16 days total participation
• Just 2 in-person visits near Vancouver General Hospital

👤 You may be eligible if you:
✅ Are 16-35 years old
✅ Have regular menstrual cycles
✅ Experience moderate to severe menstrual cramps
✅ Live in Metro Vancouver

🙋‍♀️ Interested in Participating?
📞 Call 604-875-5960 or 📧 Email: cycles.cemcor@ubc.ca

👉 Know a teen, student, or young adult with painful periods? Please share this post with them.
🔗 Learn more: https://cemcor.ubc.ca/menstrual-cramps-ibuprofen-therapy-study/

Principal Investigator: Dr. Jerilynn C. Prior, MD – UBC CeMCOR

Please note: if you choose to “like” or “follow” this post, you may be publicly associated with the study, which could impact your privacy.

02/08/2026

New information says that progesterone decreases human breast cancer cell proliferation (https://www.nature.com/articles/s43018-025-01087-x)

In her latest article, Dr. Jerilynn Prior breaks down how natural progesterone in ovulatory cycles is likely protective—especially in comparison to patterns of chronic anovulatoon. This important insight adds to our understanding of hormonal health and long-term wellbeing.

➡️ Read more about the science and what it means for menstrual and reproductive health: https://cemcor.ubc.ca/news/progesterone-in-ovulatory-cycles-likely-prevents-breast-cancer-january-2025-newsletter/

02/07/2026

New Podcast with Dr. Jerilynn Prior — The Vulvalution
Hosted by two graduate trainees in Women’s Health at UBC

🎙️Episode 4 – The Menstrual Cycle: What You Really Need to Know
What actually is the menstrual cycle—and does it matter?

In this episode of The Vulvalution, Dr. Prior joins hosts Mathilde & Sabrina to break down hormones, ovulation, and the menstrual cycle from a whole-body health perspective. Together, they bust common myths, explain why estrogen and progesterone work as a team, and walk through a full cycle—covering cramps, PMS, ovulation, and why your cycle is about much more than reproduction.

If you’ve ever been told “it’s just your hormones”, this episode is for you.

Listen to the full episode on YouTube, Spotify or Apple Podcasts. https://cemcor.ubc.ca/resources/the-vulvalution-podcast-ep-4-the-menstrual-cycle-what-you-really-need-to-know-with-dr-jerilynn-prior/

12/10/2025

🎄✨ This holiday season, empower the women in your life with the gift of knowledge and wellness through ‘Estrogen’s Storm Season’ – Dr. Jerilynn Prior tells the story of women in perimenopause through a unique blend of storytelling and scientific fact.

Why choose this book? Not only does it offer invaluable insights, but 100% of the sales contribute to CeMCOR’s research. Your purchase directly supports the future of CeMCOR, fostering essential endocrine research and leadership in women’s health.

🎁 Give a gift that keeps on giving – to your loved ones and to the advancement of women’s well-being.

Grab your copy now and be part of a meaningful journey toward a healthier and more informed future!

🔗 Buy the ESS Book on Amazon (link in bio) or directly through our website: www.cemcor.ubc.ca/resources/estrogens-storm-season/

12/05/2025

🔔 Newsletter Alert!

Are you feeling overwhelmed by all the information (and misinformation) about menopause? You’re not alone. In her latest newsletter, Dr. Prior unpacks what really matters — evidence, clarity, and compassionate guidance.

Inside this issue:
- What’s true (and what isn’t) about common menopause myths
- How to navigate hormonal changes and take control of your cycle health
- Practical tips and hope for this next chapter

Read the full article now ➡️ Link in our Bio 🔗

09/11/2025

👏 We’re proud to share that CeMCOR research associates Sonia Shirin and Dr. Nahid Shirazian presented their studies at the UBC Division of Endocrinology 2025 Research Fest last week!

👉 Sonia shared findings on ‘Attitudes about Combined Hormonal Contraceptives as Treatment for Androgeni PCOS’ from an international survey conducted back jn 2021.

👉 Dr. Shirazian presented on the relationships between self-worth, menstrual cycles, and ovulation in healthy premenopausal women—published this August in PLOS One.

You can read more about these & other studies—and even join a CeMCOR study as a participant—on our website ➡️ Link in Bio 🔗

09/09/2025

🔔 Our September Newsletter Is Live!

In this issue, Are Women Still ‘Mute Bodies’, or Are We Actually Being Heard?—Dr. Jerilynn C. Prior reflects on how women’s voices continue to be silenced in medical journals and reviews. She also shares how CeMCOR is working to change that—by amplifying women’s lived experiences through our research and studies, and with the help of mainstream media and journalists who are speaking openly about ovulation and menstrual cycles.

We’d love for you to read and share: Link in Bio 🔗

08/29/2025

NEWS! We’re excited to share our latest study on Feelings of Self Worth and Menstrual Cycle Phases, published in PLOS One. Conducted by Dr. Jerilynn C. Prior, Dr. Nahid Shirazian, Sonia Shirin, and Dhani Kalidasan this comprehensive, prospective study of daily Feeling of Self-Worth over 1-year in 53 initially normally ovulatory women showed:

👉 No consistent relationship with any sociodemographic, body size or menstrual/ovulation variable.
👉 Feeling of Self-Worth was associated with other positive experiences such as interest in s*x and feeling of energy. It was also negatively correlated with depression.

As the first study to explore self-worth using validated ovulation-tracking methods, this challenges common assumptions about emotional shifts across the menstrual cycle.

🔗 Visit the Link in our Bio to read the full press release and study results.

07/09/2025

The UBC Centre for Menstrual Cycle and Ovulation Research (CeMCOR) is inviting persons diagnosed with Endometriosis to participate in an important new study which will bring better insights to

Study eligibility:
✅ Diagnosed with Endometriosis (EndoM)
✅ Between 19-45 years old without 3 typical perimenopausal experiences
✅ Have regular, month-apart cycles (21-35 days long)
✅ Body Mass Index BMI of 18.5-28 range (BMI=weight/height2)
✅ NOT using hormones except Kyleena (>60 days) & Mirena (≥5 years) IUD and
✅ NOT smoking or va**ng
✅Living in Metro Vancouver

🎁 Eligible participants will receive:
- 2 gift cards (1 for each in-person visit)
- “Estrogen’s Storm Season” book by Dr. Prior
- Diva©️menstrual cup on completion of the full study!! ✨

Interested? Contact CeMCOR study coordinator, Dr. Nahid Shirazian:
📞 604-875-5917 | 📧 cemcor.research@ubc.ca

For detailed information about this study and what’s involved – Click the link 🔗 in our bio or visit our website: www.cemcor.ubc.ca/studies

Please note: If you choose to “like” or “follow” this post, you may be publicly associated with the study, which could impact your privacy.

07/03/2025

Do you know someone aged 16-25 who experiences severe menstrual cramps? Help share this study opportunity with a teen or young adult in your life!!

The UBC Centre for Menstrual Cycle and Ovulation Research (CeMCOR) is inviting youth aged 16-25 to join a new study exploring whether different doses of ibuprofen can better manage severe menstrual pain in adolescents and young adult women+.

Who can join this study?
✅ Those with regular menstrual cycles aged 16-25 years
✅ Experiencing moderate to severe menstrual cramps
✅ Living in Metro Vancouver and able to see us near Vancouver General Hospital

Perks of Participating!
✅ Free Diva© menstrual cup at end of the study
✅ 90 free ibuprofen tablets provided
✅ Only 16 days of participation (with 2 visits to Vancouver General Hospital)

For more information about this study and what’s involved:
Click the link 🔗 in our bio OR visit: www.cemcor.ubc.ca/studies [Menstrual Cramps Ibuprofen Therapy Study]

To participate, contact the UBC Medical Student Research team at:
Phone: 604-875-5960 | Email: cycles.cemcor@ubc.ca

Participants must be based in Metro Vancouver for the duration of the study. Please note: If you choose to “like” or “follow” this post, you may be publicly associated with the study, which could impact your privacy.

Address

2775 Laurel Street (Room 4111/4th Floor)
Vancouver, BC
V5Z1M9

Telephone

+16048755927

Website

http://www.cemcor.ubc.ca/

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