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Sources & Evidence Base

Every claim on this site is grounded in peer-reviewed research or clinical guidelines. Click any title to read the original source.

A note on DOI links: Each title links directly to the published paper via DOI or to the authoritative source. Some papers are behind journal paywalls — in those cases, searching the title in PubMed or Google Scholar will find the abstract, and preprint or open-access versions are often available.
Menopause·2022

The primary clinical guideline for hormone therapy in menopause. Updates the risk-benefit evidence and recommends individualised decision-making.

Menopause·2023

Evidence review of non-hormonal treatments for vasomotor symptoms — including fezolinetant, SSRIs, gabapentin, CBT, and others.

Harlow SD et al.·Menopause·2012

Defines the international staging system for reproductive ageing (STRAW+10). The foundation for how perimenopause is clinically classified.

·2000

26-year longitudinal study of 3,000+ multiethnic women through the menopause transition. The most comprehensive source of data on symptom timing, duration, and variation.

Avis NE et al. (SWAN)·JAMA Internal Medicine·2015

Identified four distinct hot flash trajectory groups. Average duration 7.4 years; 1 in 4 women experience symptoms starting 11+ years before their final period.

Freeman EW et al.·Archives of General Psychiatry·2006

Showed that the perimenopause transition — not postmenopause — is the highest-risk period for new onset depression. Risk is 2–4× higher than reproductive years.

Bromberger JT, Kravitz HM·Obstetrics and Gynecology Clinics of North America·2011

10-year SWAN mood findings. Late perimenopause confirmed as the critical window for mood vulnerability.

Maki PM et al.·Menopause·2023

NAMS expert panel guidelines on cognitive symptoms. Confirms cognitive complaints are common and real, recommends assessment pathway, and addresses the evidence on HRT and cognition.

Greendale GA et al. (SWAN)·Neurology·2009

SWAN cognitive substudy. Demonstrated objective declines in memory and processing speed during the transition, with improvement post-menopause for most women.

Portman DJ, Gass ML·Menopause·2014

Introduced the term GSM (Genitourinary Syndrome of Menopause) to replace 'vulvovaginal atrophy'. Emphasises that this condition is progressive and does not self-resolve.

Eastell R et al.·Journal of Clinical Endocrinology & Metabolism·2019

Clinical practice guideline covering DEXA, bisphosphonates, denosumab, and other bone-protective strategies.

Hodis HN, Mack WJ·Cancer Journal·2022

Comprehensive review of the timing hypothesis. HRT started in perimenopause or within 10 years of menopause has different cardiovascular outcomes than HRT started late.

Rossouw JE et al.·JAMA·2002

The landmark (and frequently misapplied) WHI trial. Enrolled women averaging age 63 — mostly well past menopause. Results were incorrectly generalised to perimenopausal women.

Davis SR et al.·Journal of Clinical Endocrinology & Metabolism·2019

International consensus on testosterone use in women — covers evidence for libido, sexual function, and notes gaps in evidence for other symptoms.

Baker JM et al.·Maturitas·2017

Describes the estrobolome — how gut bacteria regulate circulating estrogen via beta-glucuronidase activity. Dysbiosis can lower estrogen and amplify perimenopausal symptoms.

Johnson KA et al.·New England Journal of Medicine·2023

Phase 3 RCT of fezolinetant (NK3 receptor antagonist). Non-hormonal treatment FDA-approved in 2023 with strong efficacy for hot flashes and night sweats.

Agency for Healthcare Research and Quality·2015

Systematic review of 283 trials covering vasomotor symptoms, sleep, mood, sexual function, and urogenital atrophy. The most comprehensive evidence synthesis available.

Rance NE et al.·Maturitas·2010

Explains the KNDy neuron hypothesis — how neurokinin B signalling in the hypothalamus drives hot flashes after estrogen withdrawal.