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Clear answers start with better questions.
Short modules in plain language, with the research attached. For women to keep asking why. Read more
Cycle & hormone basics
Cycle & hormone basics
Tap any topic to expand.
Common bloodwork protocols
Common bloodwork protocols
What to test, when, and why timing matters.
Birth control recovery
Birth control recovery
What happens to your body after stopping hormonal contraception — and what helps.
Infections & the microbiome
Infections & the microbiome
Bacterial vaginosis, recurrent thrush and UTIs, and the reproductive-tract microbiome — root causes rather than repeat prescriptions.
Nutrition & fertility
Nutrition & fertility
What to eat, when, and what the research actually shows.
Supplements beyond the basics
Supplements beyond the basics
Evidence-graded options with doses, timing, and honest confidence ratings.
Exercise & your cycle
Exercise & your cycle
What to do, when, and how much — backed by the latest exercise science.
Lifestyle toolkit
Lifestyle toolkit
Light, heat, cold, breath, and environment — evidence-graded complementary therapies with cycle-phase timing.
Advanced lab testing
Advanced lab testing
Tests that come up in these conversations — what the evidence supports, and what it doesn’t.
Questions the studies answer
Straight answers, each one traceable to the trial behind it.
Nothing here says what the treatment pages do not. Every figure comes from a study those pages cite, and every answer links to the page it rests on so you can check us.
Treatment scienceEach medicine we offer, scored on its trials — all 3 written up
- How much weight do people actually lose on semaglutide?
- In the STEP 1 trial — 1,961 adults without diabetes — people on semaglutide lost 14.9% of their body weight at 68 weeks, against 2.4% on placebo. It is a large effect, and the trial measured weight, not the outcomes women most often ask about.Compounded medicines are not FDA approved. Any referenced benefits are based on third-party studies and are provided for informational purposes only.Based on Semaglutide
- What happens to the weight when you stop semaglutide?
- Most of it comes back. When STEP 1 stopped treatment at week 68 and followed people to week 120, 11.6 of the 17.3 percentage points lost had returned, leaving people 5.6% below where they started — about two-thirds regained. It is a treatment you stay on, not a course you finish.Compounded medicines are not FDA approved. Any referenced benefits are based on third-party studies and are provided for informational purposes only.Based on Semaglutide
- Is tirzepatide better than semaglutide?
- Stronger, and not free. Head to head across ten studies and 41,381 people, tirzepatide produced 4.28 percentage points more weight loss than semaglutide — and serious adverse events were more frequent with tirzepatide, risk ratio 1.83. Both halves are from the same paper; a page that shows one without the other has read half of it.Compounded medicines are not FDA approved. Any referenced benefits are based on third-party studies and are provided for informational purposes only.Based on Tirzepatide
How Filia works
From daily observations to a targeted plan, in five steps.
- 01
Chart your cycle
Log mucus, bleeding, and temperature in a few seconds a day. Filia turns plain-language observations into a standardized, chart-grade record.
- 02
See the patterns
Filia surfaces things a calendar can't — a short post-Peak phase, limited fertile mucus, tail-end brown bleeding, premenstrual spotting — early, often treatable signals.
- 03
Confirm with labs
When a pattern points to a hormone issue, Filia tells you which test to run and exactly when — like a progesterone draw seven days after your confirmed Peak.
- 04
Target the root cause
Work with your provider on focused, body-respecting interventions: progesterone support, thyroid optimization, nutrition, or a deeper workup — not a bypass.
- 05
Track what changes
Watch your numbers and your chart improve cycle over cycle, so you and your provider can see whether the plan is actually working.
The science we rely on
Every pattern flag and explanation here is grounded in peer-reviewed research, not app-store folk wisdom.
- AStrong — multiple controlled trials or large cohort studies.
- BModerate — smaller studies or consistent observational data.
- CEmerging — early or mechanistic evidence; promising but unsettled.
Want to see the work behind the numbers?
Browse the research index, topic summaries, and the places where the evidence is still thin.
Browse all 421 studies ›- Your cycle in 4 phasesWhat each phase does, and the signs you can read in it.5 short steps · Start
- What a basic panel tells youThe markers most panels start with, and how to read a report.4 short steps · Start
- Feeling tired: where to startThe usual places to look when sleep doesn’t fix it.4 short steps · Start
- When your cycle feels offIrregular, missing or painful: what is worth looking into.4 short steps · Start
- Testing timed to your cycleWhy the day of the draw changes what a result means.3 short steps · Start
- Coming off the pillWhat returns when, and what is worth checking.5 short steps · Start
- Infections and the microbiomeWhy some infections keep coming back, and what the trials show.4 short steps · Start
- Food, gut and hormonesWhat the research says about eating for your hormones.7 short steps · Start
- Supplements: what the evidence saysWhich supplements have good evidence, and which are promising at best.7 short steps · Start
- Exercise across your cycleHow much, what kind, and whether your phase matters.5 short steps · Start
- Sleep, light and stressYour body clock, stress and the practices with evidence behind them.5 short steps · Start
- Heat, cold, light and your surroundingsSaunas, cold plunges, red light and the exposures worth avoiding.6 short steps · Start
- Going deeper with labsThe tests beyond a standard panel, and when they are worth it.5 short steps · Start
A note on scope. Filia is an educational and tracking tool, not a substitute for medical care. Target ranges, supplement doses, and pattern flags are informed by peer-reviewed clinical literature and intended for education — always work with a qualified provider for diagnosis, treatment, and supplementation decisions. Evidence grades (A/B/C) reflect the current state of research, which evolves. Filia is independent and not affiliated with or certified by any specific method or organization. It is not a contraceptive and must not be used to avoid pregnancy.