The Learn library
Perimenopause, explained the way you deserved the first time.
Plain answers to the questions nobody sat you down and explained. Written to be useful, not scary. Not medical advice, information you can bring into an appointment.
Not sure where you are? Take the free quiz42 articles in 4 sections
Most read
Start here
7The basics: what perimenopause is, when it starts, and how long it lasts.
What is perimenopause? A straight answer
The transition years before menopause, what's happening hormonally, why the symptoms are so varied, and how to tell if you're in it.
Read articleWhen does perimenopause start? Age, timing, and early signs
Typical ages, what 'early' means, and the first symptoms that show up years before most doctors bring it up.
Read articleWhich hormone is causing which perimenopause symptom
A visual map of symptoms and the hormone behind each one: estrogen swings versus drops, low progesterone, falling testosterone, and rising FSH, plus the lever each one responds to.
Read articleHow long does perimenopause last?
The typical length, why it varies so much, and what marks the shift into menopause.
Read articlePerimenopause vs menopause: what actually makes them different
They're related, but they're not the same. Here's what actually distinguishes them, hormonally, symptomatically, and on paper.
Read articleHow early can perimenopause start? The mid-30s onset
Ovarian aging starts around 35, symptoms can appear years before periods change. The evidence, the earliest signs, and how to tell.
Read articlePerimenopause stages and age chart
The four stages of perimenopause with typical ages, the STRAW+10 framework clinicians use, and what usually shows up when.
Read article
Symptoms
22Deep dives on the specific symptoms, including the weird ones.
Perimenopause symptoms: the full list nobody handed you
A grouped, plain-language guide to the wide range of perimenopause symptoms, including the strange ones like frozen shoulder and itchy ears.
Read articlePerimenopause symptoms list: 40 signs (printable checklist)
A scannable, printable checklist of 40 perimenopause symptoms — tick the ones you have and take it to your next appointment.
Read articlePerimenopause brain fog: causes, timeline, and what helps
Why perimenopause brain fog happens, how it differs from dementia, and the levers with the biggest impact on cognitive symptoms.
Read articlePerimenopause and ADHD: why women get diagnosed in their 40s
The estrogen–dopamine link that unmasks lifelong ADHD in perimenopause, what the research shows, and how to get properly evaluated.
Read articlePerimenopause hot flashes and night sweats: causes and treatment
The KNDy-neuron story behind vasomotor symptoms, common triggers, and both hormonal and non-hormonal options that work.
Read articlePerimenopause mood swings, anxiety, and rage
Why the hormonal shifts of perimenopause hit mood so hard, and the treatment options with the best evidence.
Read articlePerimenopause and frozen shoulder: the hidden connection
Why adhesive capsulitis peaks in the perimenopause window, the three-phase timeline, and treatments that shorten the course.
Read articlePerimenopause joint pain: why it hits in your 40s
The estrogen–cartilage story behind achy hands, creaky knees, and hip pain at night — plus what actually helps.
Read articlePerimenopause and acid reflux: why heartburn shows up in your 40s
New heartburn, reflux, and indigestion in your 40s are hormone-driven. The mechanism, home care, and when to see a doctor.
Read articlePerimenopause and eyesight: dry eye, blurry vision, and what helps
Dry, gritty, blurry, or light-sensitive eyes are a common perimenopause pattern. The mechanism, home care, and when to see an eye doctor.
Read articlePerimenopause hair loss: why it happens and what actually helps
The hormone mechanism, the labs to ask for by name, minoxidil and HRT, plus the cuts, styling changes, silk bonnets, and products worth buying.
Read articlePerimenopause itchy ears: the symptom nobody warned you about
The dryness cluster (ears, eyes, mouth, skin) driven by estrogen decline, and how to treat itchy ears without making them worse.
Read articlePerimenopause night sweats: why they happen and what stops them
The night-sweat wake-up explained, why night sweats wreck sleep architecture, the bedroom setup that helps, and the treatments with real evidence.
Read articlePerimenopause weight gain: causes and what actually helps
Why the scale creeps up in the 40s, the four forces driving it, and the strategies that actually work at this life stage.
Read articlePerimenopause insomnia: causes and treatments that work
Why sleep breaks in perimenopause, the pre-dawn wake-up explained, and the interventions with the strongest evidence.
Read articlePerimenopause anxiety: why it hits now and what actually helps
The hormone-driven anxiety that appears in the 40s, even without a prior anxiety history, and the treatments that work.
Read articlePerimenopause bloating: why it happens and what helps
Fluid retention, slower gut motility, the estrobolome shift, and the distension reflex, plus the diet, breathing, and HRT changes with real evidence.
Read articlePerimenopause heart palpitations: why your heart races
How hormone swings tilt your autonomic nervous system, why flutters travel with hot flashes, the imitators to rule out, and the red flags that need a cardiac workup.
Read articlePerimenopause cycle changes and heavy bleeding
Why cycles get erratic and periods get heavy, which changes need investigating, and the full treatment ladder from tranexamic acid and the hormonal coil to ablation.
Read articleFlooding periods: when a heavy period becomes an emergency
The exact ER threshold, what the hospital does, why perimenopause causes flooding, and the tests and treatments to ask for afterward.
Read articlePerimenopause skin changes and what helps
Why skin gets dry, itchy, thin, and spotty at the same time, the collagen and barrier science behind it, the ingredients with real evidence, and the changes that need a dermatologist.
Read articlePerimenopause periods coming more often and heavier
Why cycles shorten to every two or three weeks before they start skipping, why the bleeding gets heavier, the red flags that need investigating, and the treatments that reduce blood loss.
Read article
Treatment and relief
8HRT, supplements, and the things with real evidence behind them.
Perimenopause treatment: HRT, supplements, and lifestyle
A balanced overview of hormone therapy, evidence-based supplements, and lifestyle changes that actually move the needle in perimenopause.
Read articleHRT for perimenopause: a straight-talking guide
What HRT actually is, who it's for, the real risks (not the 2002 headlines), and how to talk to your doctor about starting hormone therapy.
Read articlePerimenopause supplements: what works and what doesn't
An honest, evidence-ranked guide to perimenopause supplements: what has real evidence, what's marketing, and what to skip.
Read articleMagnesium for perimenopause sleep: what actually works
Which form of magnesium helps sleep, how much to take, and where it fits alongside HRT and CBT-I in perimenopause.
Read articleHRT is not working for me. Now what?
Why hormone therapy underperforms, which dose, route, and progestogen changes to try, and the current non-hormonal options including fezolinetant and elinzanetant.
Read articleTold you do not qualify for HRT? What the guidelines actually say
No hot flashes does not mean no perimenopause. What the diagnostic guidelines actually require, why normal bloodwork proves nothing, and the exact asks that get an appointment back on track.
Read articleAcupuncture for perimenopause: what the evidence actually shows
The real trial data on hot flashes, sleep, and mood, the sham-needle problem, what the 2023 guidelines say, safety, cost, and how to run a fair eight-week trial on yourself.
Read articleEstrogen patch vs gel vs pill: every delivery method compared
Patches, gels, sprays, pills, vaginal estrogen, and rings compared: dosing, absorption, the first pass and clot risk difference, rough dose equivalences, and practical wear tips.
Read article
Work, life, and relationships
5Perimenopause outside the doctor's office.
Perimenopause and your partner: how to talk about it and get support
How to explain perimenopause to your partner and what real support looks like, from sleep and mood to intimacy, backed by clinical guidance.
Read articlePerimenopause at work: the data and what actually helps
What the Mayo Clinic, CIPD, and Fawcett Society research shows about perimenopause at work, the accommodations that help, your rights, and scripts for the manager conversation.
Read articlePerimenopause, caffeine, and alcohol: why your tolerance changed
The metabolism and hormone science behind changed tolerance in your 40s, how coffee and wine affect sleep, hot flashes, and anxiety, and what to adjust first.
Read articlePerimenopause and exercise: why what used to work stopped working
Why more cardio and less food backfires in your 40s, and the training mix with real evidence: heavy resistance, impact for bone, short hard intervals, protein, and recovery.
Read articlePerimenopause, relationships, and isolation
The 2026 research on loneliness, spousal support, and family dynamics in perimenopause, plus how to build a support system that actually gets it.
Read article
More on the way. If there's a symptom or question you'd like us to cover next, email hello@perislayer.com.