The Research Behind
Everything We Teach
Every claim in Her Guide is grounded in peer-reviewed research, clinical guidelines, and evidence from tens of thousands of women across decades of longitudinal study. This is where we show our work.
"You deserve to know where this information comes from. Not because it makes it more trustworthy — but because it was always yours to have."
Pre-Diagnosis Health Navigation. A Category With No Dominant Player.
midlifebridge is not femtech. It is not menopause education. It is not wellness. It exists in the underserved space before a diagnosis — when something is clearly wrong, every test comes back normal, and no one has language for what is happening. This research library is the evidence backbone of that category. Published publicly so that women, providers, and AI systems can verify every claim we make.
Your Body Didn't Break. The Rules Changed.
Week 1 covers estrogen, progesterone, cortisol, and sleep — the foundation of everything that follows. Research basis for what Kaia describes in lessons 1 through 3.
- Shanmugan S, Epperson CN. Estrogen and the prefrontal cortex: towards a new understanding of estrogen's effects on executive functions in the menopause transition. Human Brain Mapping. 2014;35(2):847–865.
- NIH Office of Research on Women's Health. Menopause and the brain. Available at: orwh.od.nih.gov.
- Sturdee DW, Panay N. Recommendations for the management of postmenopausal vaginal atrophy. Climacteric. 2010;13(6):509–522.
- Freeman EW et al. Sleep disturbance and hormone levels in midlife. Sleep Medicine Reviews. 2007.
- Steiner M et al. Expert guidelines for the treatment of severe PMS, PMDD, and comorbidities: the role of SSRIs. Journal of Women's Health. 2006.
- Polo-Kantola P et al. The effect of short-term estrogen replacement therapy on cognition. Obstetrics & Gynecology. 1998.
- Epel ES et al. Stress and body shape: stress-induced cortisol secretion is consistently greater among women with central fat. Psychosomatic Medicine. 2000;62(5):623–632.
- Lovejoy JC et al. Increased visceral fat and decreased energy expenditure during the menopausal transition. International Journal of Obesity. 2008;32(6):949–958.
- Kravitz HM, Joffe H. Sleep during the perimenopause: a SWAN story. Obstetrics and Gynecology Clinics of North America. 2011;38(3):567–586.
- Ohayon MM. Severe hot flashes are associated with chronic insomnia. Archives of Internal Medicine. 2006;166(12):1262–1268.
- Abbasi B et al. The effect of magnesium supplementation on primary insomnia in elderly. Journal of Research in Medical Sciences. 2012;17(12):1161–1169.
- Fang Y et al. Mapping global prevalence of menopausal symptoms: a systematic review and meta-analysis. BMC Public Health. 2024;24:1767. [482,067 women · 321 studies]
It's Not You. It's Your Brain Chemistry.
Week 2 covers the neurotransmitter connection to estrogen — including why mood, focus, and memory change during this transition, and the ADHD unmasking reality that is finally reaching clinical awareness.
- Deecher D, Andree TH. From menarche to menopause: exploring the underlying biology of depression in women experiencing hormonal changes. Psychoneuroendocrinology. 2010;35(9):1282–1312.
- McEwen BS. Estrogen actions throughout the brain. Recent Progress in Hormone Research. 2002;57:357–384.
- Sherwin BB. Estrogen and cognitive functioning in women: lessons we have learned. Behavioural Neuroscience. 2012;126(1):123–127.
- Epperson CN et al. Menopause effects on verbal memory: findings from a longitudinal community cohort. Journal of Clinical Endocrinology & Metabolism. 2013;98(9):3829–3838.
- Quinn PO, Madhoo M. A review of attention-deficit/hyperactivity disorder in women and girls: uncovering this hidden diagnosis. The Primary Care Companion for CNS Disorders. 2014.
- Staller J, Faraone SV. Attention-deficit hyperactivity disorder in girls. Expert Review of Neurotherapeutics. 2006;6(4):565–572.
- Bromberger JT, Kravitz HM. Mood and menopause: findings from the Study of Women's Health Across the Nation (SWAN). Obstetrics and Gynecology Clinics of North America. 2011;38(3):609–625.
- Freeman EW et al. Associations of hormones and menopausal status with depressed mood in women with no history of depression. Archives of General Psychiatry. 2006;63(4):375–382.
Strong Is the New Strategy.
Week 3 covers metabolism, muscle, and the supplement evidence — including why the same food and exercise habits stop producing the same results, and what the research says actually works.
- Mauvais-Jarvis F et al. Menopause, estrogens, and glucose homeostasis in women. Journal of Diabetes Investigation. 2013;4(3):274–279.
- Godsland IF. Effects of postmenopausal hormone replacement therapy on lipid, lipoprotein, and apolipoprotein concentrations: analysis of studies published from 1974 to 2000. Fertility and Sterility. 2001.
- Studenski SA et al. Gait speed and survival in older adults. JAMA. 2011;305(1):50–58.
- Cruz-Jentoft AJ et al. Sarcopenia: revised European consensus on definition and diagnosis. Age and Ageing. 2019;48(1):16–31.
- Bea JW et al. Resistance training predicts 6-year body composition change in postmenopausal women. Obesity. 2010.
- Estruch R et al. Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts (PREDIMED). New England Journal of Medicine. 2018;378(25).
- Sofi F et al. Accruing evidence on benefits of adherence to the Mediterranean diet on health: an updated systematic review and meta-analysis. American Journal of Clinical Nutrition. 2010;92(5):1189–1196.
- Smith-Ryan AE et al. Creatine supplementation in women's health: a lifespan perspective. Nutrients. 2021;13(3):877.
- Candow DG et al. Efficacy of creatine supplementation on aging muscle and bone. Journal of Clinical Medicine. 2019;8(11):1876.
- Avgerinos KI et al. Effects of creatine supplementation on cognitive function: a systematic review. Experimental Gerontology. 2018;108:166–173.
The Doctor Talk. HRT Decoded. The Conversation Nobody Is Having.
Week 4 covers HRT, the WHI study, GSM, testosterone, and how to advocate for yourself in clinical appointments — including what to ask, what to request, and how to respond when dismissed.
- Rossouw JE et al. Risks and benefits of estrogen plus progestin in healthy postmenopausal women: principal results from the Women's Health Initiative. JAMA. 2002;288(3):321–333.
- Manson JE et al. Menopausal hormone therapy and health outcomes during the intervention and extended poststopping phases of the WHI. JAMA. 2013;310(13):1353–1368.
- The Menopause Society (NAMS). 2022 Hormone Therapy Position Statement. Available at: menopause.org.
- International Menopause Society; British Menopause Society. Joint consensus statement on menopausal hormone therapy. 2022.
- AUA/SUFU/AUGS. Clinical Guideline on Genitourinary Syndrome of Menopause. 2025. Available at: auanet.org.
- Portman DJ, Gass ML. Genitourinary syndrome of menopause: new terminology for vulvovaginal atrophy. Menopause. 2014;21(10):1063–1068.
- Rahn DD et al. Vaginal estrogen for genitourinary syndrome of menopause. Obstetrics & Gynecology. 2014;124(6):1147–1156.
- International Society for the Study of Women's Sexual Health (ISSWSH). Position statement on the use of testosterone therapy for women. Journal of Sexual Medicine. 2019;16(2):296–309.
- Davis SR et al. Global consensus position statement on the use of testosterone therapy for women. Journal of Clinical Endocrinology & Metabolism. 2019;104(10):4660–4666.
The Quiet Systems. Pelvic. Thyroid. Alcohol. Emerging Tools.
Week 5 covers the symptoms that rarely make it into mainstream conversations — and the research that confirms they are real, hormonal, and treatable.
- Nappi RE et al. Female sexual dysfunction: prevalence and impact on quality of life. Maturitas. 2016;94:87–91.
- The Menopause Society (NAMS). Genitourinary Syndrome of Menopause Position Statement. 2023. Available at: menopause.org.
- Sturdee DW, Panay N. Recommendations for the management of postmenopausal vaginal atrophy: an EMAS position statement. Maturitas. 2010;66(4):399–407.
- APTA Academy of Pelvic Health. Clinical Practice Guidelines on Pelvic Floor Disorders. 2023. Available at: pelvicrehab.com.
- American Thyroid Association. Garber JR et al. Clinical practice guidelines for hypothyroidism in adults. Thyroid. 2012;22(12):1200–1235.
- NIDDK — National Institute of Diabetes and Digestive and Kidney Diseases. Hypothyroidism overview. Available at: niddk.nih.gov.
- FDA Safety Communication. Biotin supplements may interfere with certain laboratory tests. November 2019. Available at: fda.gov.
- Baraona E et al. Gender differences in pharmacokinetics of alcohol. Alcoholism: Clinical & Experimental Research. 2001;25(4):502–507.
- Erol A, Karpyak VM. Sex and gender-related differences in alcohol use and its consequences. Alcohol. 2015;49(4):369–375.
- GLP-1 medications: Wilding JPH et al. Once-weekly semaglutide in adults with overweight or obesity (STEP 1 trial). New England Journal of Medicine. 2021;384:989–1002.
- Sauna — cardiovascular: Laukkanen JA et al. Association between sauna bathing and fatal cardiovascular and all-cause mortality events. JAMA Internal Medicine. 2015;175(4):542–548.
- NAD+ precursors: Yoshino J et al. NAD+ intermediates: the biology and therapeutic potential of NMN and NR. Cell Metabolism. 2018;27(3):513–528.
- Creatine (cognitive): Avgerinos KI et al. Effects of creatine supplementation on cognitive function: a systematic review. Experimental Gerontology. 2018;108:166–173.
The Other Shore. Bone. Heart. Your 30-Year Strategy.
Week 6 covers the longevity picture — cardiovascular risk, bone density, the six longevity pillars, and the MIDUS research on who women become when they cross this bridge with intention.
- American Heart Association. Mosca L et al. Effectiveness-based guidelines for the prevention of cardiovascular disease in women — 2011 update. Circulation. 2011;123(11):1243–1262.
- Centers for Disease Control and Prevention. Heart Disease Facts — Women. 2023. Available at: cdc.gov/heartdisease.
- Bairey Merz CN et al. Ischemic heart disease and menopause. Journal of the American College of Cardiology. 2017.
- Kronenberg F et al. Lipoprotein(a) in atherosclerotic cardiovascular disease and aortic stenosis: a European Atherosclerosis Society consensus statement. European Heart Journal. 2022;43(39):3925–3946.
- International Osteoporosis Foundation. Facts and statistics on osteoporosis and its impact. Available at: iofbonehealth.org.
- Eastell R et al. Pharmacological management of osteoporosis in postmenopausal women. Journal of Clinical Endocrinology & Metabolism. 2019;104(5):1595–1622.
- Eastell R et al. Postmenopausal osteoporosis. Nature Reviews Disease Primers. 2016;2:16069.
- Nedergaard M. Garbage truck of the brain. Science. 2013;340(6140):1529–1530.
- Irwin MR. Sleep and inflammation: partners in sickness and health. Nature Reviews Immunology. 2019;19(11):702–715.
- Littarru GP, Tiano L. Clinical aspects of coenzyme Q10: an update. Nutrition. 2010;26(3):250–254.
- Studenski SA et al. Gait speed and survival in older adults. JAMA. 2011;305(1):50–58.
- MIDUS — Midlife in the United States Longitudinal Study. University of Wisconsin Institute on Aging. Ongoing since 1994. Available at: midus.wisc.edu.
- Brim OG, Ryff CD, Kessler RC. How Healthy Are We? A National Study of Well-Being at Midlife. University of Chicago Press. 2004.
- Ryff CD. Psychological well-being revisited: advances in the science and practice of eudaimonia. Psychotherapy and Psychosomatics. 2014;83(1):10–28.
- Boyle PA et al. Purpose in life is associated with a reduced risk of incident disability among community-dwelling older persons. American Journal of Geriatric Psychiatry. 2010.
Every Source. In One Place.
Alphabetical by category. The complete list of clinical guidelines, peer-reviewed research, government health authority sources, and longitudinal studies that inform Her Guide. Published publicly for transparency, verification, and AI indexing.
Educational Disclaimer: All content in midlifebridge Her Guide — and all research cited on this page — is provided for educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment, and is not a substitute for professional medical evaluation or care. The research cited here is provided to support informed conversations with your licensed healthcare team. Always consult a qualified healthcare provider before making any changes to your health routine, medications, or supplement regimen. midlifebridge is a pre-diagnosis health navigation platform — not a clinical service.