Menstruation News and Research

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Menstruation is the shedding of the uterine lining (endometrium). It occurs on a regular basis in reproductive-age females of certain mammal species.

Hormonal shifts alter brain patterns linked to female mood

During the menstrual cycle, when progesterone levels are higher, patterns of brain activity emerge that make it more difficult to distinguish between less and more emotionally demanding situations.

23 Sep 2026

Mifepristone offers effective emergency contraception with fewer side effects

Emergency contraception containing mifepristone prevents more pregnancies with fewer side effects than some other common emergency contraceptive pills such as levonorgestrel, according to a new Cochrane review involving 87 trials.

20 Sep 2026

Women with shorter reproductive lifespan face higher risk of developing bronchiectasis

Women with a shorter reproductive lifespan are at greater risk of developing bronchiectasis, according to a new study in the July 2026 issue of Chronic Obstructive Pulmonary Diseases: Journal of the COPD Foundation, a peer-reviewed, open access journal.

27 Aug 2026

Book reframes pregnancy loss as a natural trial-and-error process

According to a new book from University of Illinois Urbana-Champaign anthropology professor Kate Clancy, pregnancy is necessarily fraught, involving a series of tests of egg, embryo and reproductive system viability, with potential losses at every stage.

24 Aug 2026

Exposure to fungicides and insecticides alters onset of puberty in girls

The study, which tracked more than 500 Spanish girls between the ages of 7 and 10, links the presence of certain fungicides in urine to early menarche and that of the insecticide chlorpyrifos to delayed menarche, highlighting the impact of pesticides on pubertal development.

31 Jul 2026

Experts recommend renaming PCOS to better reflect whole-body impacts

A condition affecting approximately 170 million adolescents and women worldwide has a new name – one that better reflects its complexity and far-reaching health impacts.

15 Jul 2026

New report outlines practical strategies to improve hematological care for women

A new report in The Lancet Haematology, led by Cleveland Clinic hematologist Bethany Samuelson Bannow, M.D., outlines practical strategies to improve diagnosis, care and outcomes globally for women and girls with hematological conditions, such as bleeding disorders, heavy menstrual bleeding, postpartum hemorrhage, thrombosis and maternal hematologic complications.

13 Jul 2026

The menstrual cycle changes heart-rate variability but not strength

Menstrual cycle phases influence heart autonomic regulation, showing HRV variations, yet muscle performance and mood states remain largely unchanged.

23 Jun 2026

Secondhand smoke exposure linked to higher blood cadmium levels

A new study finds that adults who simply breathe in secondhand cigarette smoke have about 1.5 times more of the toxin cadmium in their blood than people in smoke-free environments.

15 Jun 2026

New guideline recommends tailored care for precocious puberty

Some subgroups of children with precocious puberty-such as older girls with slowly progressing puberty-may not need the same level of testing or treatment, according to a new Endocrine Society Clinical Practice Guideline released today.

14 Jun 2026

Aggressive healthcare chatbots push away cervical screening patients

Patients booking cervical screening appointments through an AI chatbot respond positively to friendliness and choice-oriented language, but are put off by over-messaging, pushy reminders and blurred human-AI boundaries, according to new research from the University of Surrey.

10 Jun 2026

Study links menstrual cycle timing to COVID vaccine side effects

A study of 1,474 Clue app users found that women vaccinated against COVID-19 during the follicular phase had higher odds of self-reported side effects than those vaccinated during the luteal phase.

8 Jun 2026

Shopping data reveals hidden period pain disparities in England

The study highlights how shopping behavior reflects menstrual pain prevalence, revealing inequalities in health management across income levels.

2 Jun 2026

Vaginal bromocriptine may ease pain and heavy bleeding in adenomyosis

A pilot randomized controlled trial found that vaginal bromocriptine reduced menstrual bleeding, pelvic pain, menstrual duration, and cycle irregularity in women with adenomyosis compared with routine treatment.

27 May 2026

Women who sleep less may face more irregular menstrual cycles

A study on 42,759 menstrual cycles shows that sleep quality affects menstrual health, with implications for physiological stability and individual variability.

27 May 2026

Wearable devices may help detect menstrual health changes earlier

Digital health tools, including wearables, provide critical data on menstrual health, enhancing understanding of hormonal fluctuations and women's well-being.

27 May 2026

Higher ferritin threshold could detect childhood iron deficiency much earlier

Many cases of iron deficiency in school-aged children could be diagnosed earlier, according to a new study published in Blood Red Cells & Iron, a journal of the American Society of Hematology (ASH).

20 May 2026

Study reveals why endometriosis pain persists after lesions are removed

Repeated menstrual cycles may do more than trigger endometriosis. They may rewire the brain.

16 Apr 2026

Taller individuals face higher risk of endometriosis and atrial fibrillation

A large-scale genetic analysis of East Asian individuals led by Fuu-Jen Tsai of the China Medical University Hospital, finds that people with greater height face a higher risk of endometriosis and atrial fibrillation.

18 Mar 2026

Weight-loss drugs linked to preterm birth risk in women with pre-existing diabetes

Weight loss drugs have been linked to an increased risk of premature births among women who took them inadvertently just before or during early pregnancy to treat pre-existing diabetes.

17 Mar 2026