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Ask a question in plain language. Anthea will search across our growing database of peer-reviewed studies and give you a grounded, honest, research-backed answer with links to the underlying science.
Anthea searches across our curated summaries of peer-reviewed studies. It does not have access to full study text, and it is not a substitute for medical advice.
Researchers: this database is only as strong as the science behind it. Submit a study or request verification →
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Peer-reviewed research spanning clinical trials, neuroscience, epidemiology, mental health, and the social politics of diagnosis. Searchable, filterable, free, and growing.
Anthea's database spans over a hundred peer-reviewed studies. Below is an honest account of where the science is strong, where it is developing, and where it has barely begun. If you are a researcher or clinician, you can help change that.
Submit a studyAn honest assessment of where Anthea's database is strong, and where meaningful gaps remain. We update this as new research is added.
SSRIs, drospirenone-containing OCs, GnRH agonists, CBT, and non-pharmaceutical options like exercise, calcium, and acupuncture are all well-represented, including multiple Cochrane reviews and the 2023 ACOG guidelines.
The GABA/allopregnanolone mechanism, NIH epigenetics findings, Swedish neuroimaging work, and the DSM-5 evidence base are all included. This is the most robust section of the database.
Anthea has one of the most comprehensive collections of PMDD workplace research available anywhere, including multinational productivity studies, qualitative work experience research, and policy analyses.
Several foundational studies on PMDD-ADHD comorbidity are now included, but this is a rapidly growing field. Research on autism spectrum conditions and PMDD remains thin in the database, and appears thin in the broader literature too.
A small number of studies on PMDD through the menopausal transition are included. What happens to PMDD as people age remains poorly understood in the database, and from what we can see, in the broader literature as well.
Studies now span 20 countries, but US and Swedish institutions account for the majority of what is indexed here. Research from Africa, South Asia, the Middle East, and Southeast Asia is sparsely represented, a pattern likely reflecting gaps in the global literature as much as in Anthea's indexing.
Early research suggests PMDD may have heritable components. In our database, this work is currently housed within Biology & Neuroscience. As the literature grows, it may warrant its own category.
PMDD's impact on relationships is one of the most searched topics in the community, but the peer-reviewed literature is only beginning to catch up. Lived experience is well ahead of the research here.
Only one study addresses PMDD in transmasculine and nonbinary people, reflecting a near-total absence in the broader literature. This is both a scientific and an equity failure we hope to see addressed.
One preliminary pilot study touches on the gut-brain axis in PMDD. A promising emerging area given community interest in dietary interventions, and one that appears largely unexplored in what we have indexed, and in the peer-reviewed literature more broadly.
Most indexed PMDD research spans weeks or months. Studies tracking people over years, examining how PMDD evolves through reproductive transitions or responds to sustained treatment, are rare in this database and, as far as we can tell, in the literature broadly.
A 2025 Karolinska cohort of 15,857 Swedish women established that PMDs raise sick leave risk by 40% and unemployment risk by 27%. What remains unstudied is the full pipeline: how unmanaged symptoms shape occupational trajectory, drive entry into precarious or informal work, and compound economic vulnerability over time.
Research comparing PMDD to PCOS, premenstrual epilepsy, bipolar II, and borderline personality disorder is limited and scattered in the database. The literature does not appear to have coalesced around this question, but Anthea is watching.
Researchers, clinicians, and community members are all welcome to contribute. Reach out to [email protected]
Each submission is reviewed, revised, and approved by a human.
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Study details
If these details are not provided, Anthea will reach out to confirm them before adding the study to the database.
PMDDinner is a grassroots dinner series for AFAB people living with PMDD. Share stories, find your people, and build the kind of community that actually gets it.
No date set yet, but It is coming. Drop your email and you will be the first to know when Austin's first PMDDinner is on the calendar.
Anthea is a research database and commons with a point of view. Here is what that means in practice.
The research in this database is peer-reviewed, indexed, and presented with context. We do not soften findings, omit inconvenient evidence, or select studies that support a predetermined conclusion. Where sample sizes are small, populations are narrow, or conclusions have been overstated in the literature, we say so.
We exercise editorial judgment in how research is selected, summarized, and framed. That judgment has a lens: the wellbeing, dignity, and progress of everyone touched by PMDD. That lens means holding the research to account for the people it is ultimately about.
Anthea is AI-native. The database exists because AI makes it possible for a solo non-STEM founder to build, populate, maintain, and grow a rigorous infrastructure without institutional backing. Plain-language summaries, editorial copy, and the codebase itself are continually developed with AI as a core, subordinate collaborator. The initial database was compiled by AI, with each study reviewed by a human for relevance and accuracy before inclusion.
While AI lowers the barrier to building, it does not lower the bar for accuracy.
All copy in this database is subject to review and validation by researchers, clinicians, and community stakeholders, with transparency and choice at every step. Verified researchers whose work appears here can review and approve of how the work is represented, and studies which have not been verified by a human are marked as such. The blog belongs entirely to community voices, not to machines.
Ask Anthea is a research answer tool. It is not a medical service, a diagnostic tool, a therapist, or a crisis line. Understanding what it is and what it is not is important before using it.
What it does. Ask Anthea takes a plain-language question, searches across editorial summaries of the studies in Anthea's database, and returns a synthesised response grounded in that specific research. Every claim in a response is drawn directly from a study in the database and attributed to it by author and year. If a question cannot be answered from the database, the tool says so.
What it does not do. Ask Anthea cannot diagnose, prescribe, or provide personalised medical advice. It cannot access full study text. All studies are represented by curated editorial summaries and key findings. It does not know your medical history, your circumstances, or your context. It cannot replace a conversation with a clinician who does. If you are making decisions about your health, please speak with a qualified clinician.
What makes this different from other AI tools. Ask Anthea is a single-turn research tool, not a conversational companion. It has no memory of previous sessions and builds no ongoing relationship with users. Its outputs are grounded entirely in peer-reviewed research rather than open-ended generation. A hardcoded crisis detection layer runs before every search: if a question signals that someone may be in distress, the search does not run. Instead, the person is directed immediately to human crisis support.
Limitations you should know. AI can make errors even when instructed to stay within a defined scope. Citations in search responses include author names and years drawn from the database. While the system is instructed to cite accurately, AI can occasionally misrepresent findings or attribute claims imprecisely. Always follow the link to the source paper before relying on a specific finding. Summaries in the database are editorial interpretations of studies, not reproductions of them. The database is not exhaustive and continues to grow. Responses should be treated as a starting point for further reading and conversation, not as a final word.
Safety. If you are experiencing a mental health crisis, Ask Anthea is not the right resource. Contact the 988 Suicide and Crisis Lifeline by calling or texting 988, or text HOME to 741741 for the Crisis Text Line. If you are outside the United States, visit findahelpline.com for local crisis support. If you are in immediate danger, call your local emergency services.
Anthea exists to advance our collective understanding of PMDD and to improve outcomes for everyone PMDD impacts. We ask that it be used and interacted with in that spirit.
All voices welcome. Lived experience is as valuable here as clinical or research background. If you have a story, a perspective, or expertise you want to share, we want to hear from you.
Reach out to [email protected]
This list is not exhaustive. What the blog becomes will be shaped by the community that writes it.
Tracking across two consecutive cycles is how the pattern that defines PMDD becomes visible. This is Dani's story. One way PMDD can unfold. Their cycle is 28 days, their symptoms lean mood and affective, and their experience is their own. Yours may look completely different. Tap any day to read their entry. At the end, you will find guidance on tracking your own cycles.
Dani's cycle is shown here as 28 days with a textbook phase structure. Real cycles vary widely. Anywhere from 20 to 40 days is considered typical, and the timing of ovulation, the length of the luteal phase, and when symptoms begin all differ from person to person. Some people notice symptoms starting close to ovulation; for others the shift comes much later. Some cycles look nothing like the one before them.
Two cycles, logged daily. That is what the diagnostic process asks for. You are looking for a pattern of symptoms that begins after ovulation, worsens in the days before menstruation, and lifts within a few days of bleeding starting. The symptom-free window matters as much as the symptomatic one.
How that pattern looks will be yours alone. Your cycle may be longer or shorter than Dani's. Your symptoms may be primarily physical, or a mix. Onset might be gradual or sudden. Two cycles that look different from each other are still valid data. What you are tracking is a pattern across time, not a perfect match to any template.
For each symptom, note severity: mild, moderate, or severe. Add a note on whether symptoms affected what you did or how you showed up that day. Keep it brief. Consistency matters more than detail.
Bring two completed cycles to your provider. The data you collect is more useful than any description of how you feel in the appointment room.
Pattern recognition is hard, especially when you are the one trying to read your own experience.
Two cycles of data can show you something real and still leave the question open. That is not a failure of the data. It is an honest reflection of how complicated this territory is. Several conditions share surface features with PMDD. Some are cyclical. Some are constant but feel worse premenstrually. Some are simply hard seasons that the body amplifies. And some sit alongside PMDD rather than instead of it.
Not every difficult luteal phase is a disorder. Prolonged stress, loss, burnout, and major life disruption all affect how the body moves through the cycle. The hormonal and nervous system changes are real. The luteal phase can amplify what is already present. If something significant has happened in your life and the timeline lines up, that is worth noting in your tracking data. It does not make your experience less real. It is just a different kind of information, and it belongs in the picture too.
Premenstrual syndrome is real, common, and often genuinely unpleasant. The symptoms overlap almost entirely with PMDD. What separates them is severity, and the DSM-5 criteria for PMDD are specific: five or more symptoms in the luteal phase, at least one of which is a mood symptom, causing marked impairment in work, relationships, or daily life. PMS can make the days before your period harder. PMDD reorganizes them. Many people with PMS recognize something in Dani's story without having PMDD, and that recognition is valid. But if what you are reading feels less like "that sounds familiar" and more like "that is my life," the distinction matters and is worth exploring with a provider.
Hormonal fluctuation in the years before menopause, which can begin well before most people expect it, produces mood symptoms that can look almost identical to PMDD. If you are in your late thirties or forties and this is new, or newly worse, it is worth asking your provider about hormone panel testing alongside cycle tracking.
An existing condition, depression or anxiety for example, can genuinely worsen before menstruation without the condition itself being PMDD. This is common and underrecognized. The key difference: in PME, symptoms do not fully resolve after bleeding starts. There is a baseline that the luteal phase worsens, rather than a shift from symptom-free to symptomatic. Both can be true at once, and often are.
Major depressive disorder and generalized anxiety do not follow a cycle. But a low-grade, continuous depression can be difficult to assess clearly, especially if the luteal phase reliably makes it worse. Prospective daily tracking over time will usually make the shape legible. A clinician who knows both conditions well will be the better judge.
Hormonal shifts across the menstrual cycle significantly affect dopamine and norepinephrine, which means ADHD symptoms often worsen in the luteal phase. This is still underresearched and underrecognized in clinical practice. Some people track what looks like PMDD and find it is ADHD that was never identified. Some have both. If concentration, time blindness, or emotional regulation feel like the core of what you are tracking, it may be worth raising with a provider.
Rapid cycling in bipolar II can produce a pattern that loosely mirrors a menstrual cycle. The distinction matters clinically because the treatments differ significantly, and some interventions used for PMDD are contraindicated in bipolar disorder. If there is any possibility this fits, it is worth raising directly with a psychiatrist.
Anthea exists because PMDD has been dismissed, minimized, and misunderstood for most of its documented history. People living with it often spend years without a name for what is happening, and longer still finding care that actually fits.
Until 1993, women were excluded from clinical trials. For a condition like PMDD that only afflicts people who menstruate, the majority of whom are women, that is not a footnote. It is the reason so much is still unknown. The NIH Revitalization Act of 1993 changed that, but the research and outcomes gaps have not closed.
The research exists. The community exists. But the infrastructure to connect them has been missing.
Anthea is that infrastructure.
A curated, peer-reviewed research database and at its heart, a commons for everyone touched by PMDD: those living with it, their loved ones, and the clinicians and researchers working alongside them.
Whether you are newly diagnosed, misdiagnosed, undiagnosed, or trying to understand someone you love, you belong here. Whether you are a clinician, a researcher, or a student, your work belongs here too.
Anthea is a living index of the peer-reviewed literature on PMDD, built to be searchable, citable, and open. Literature that exists because of the people it ultimately serves.
Right now, we are scattered across forums, clinics, and research silos that rarely speak to each other, and the resources that could help are just as fragmented. That dispersal makes it hard to recognize the shape of what we share, and harder still to find support when it is needed most.
That is why Anthea is built as a commons.
Everyone who participates here helps shape what Anthea becomes: people directly impacted, researchers, and allies alike. Your experiences and the research that reflects them are the bricks of our shared understanding.
An ongoing look at what is in the Anthea database and how it is taking shape.
Data expands when clickedThis database reflects peer-reviewed research Anthea has indexed. It is not a complete picture of all PMDD literature. Classifications by method and treatment type are derived from titles, summaries, and outcomes fields and may not capture every nuance of a study's design. Studies are added continuously and these figures will change.