Fady Hannah-Shmouni, MD FRCPC
Aesthetic & Regenerative Endocrinology
A Clinician's Pocket Guide — Optimizing the Skin–Endocrine System
About this pocket guide
Skin is not just a barrier — it is an endocrine organ, both a target and a source of hormonal signaling. Estrogens, androgens, thyroid hormone, cortisol, growth hormone, and insulin all leave visible signatures. You see them in skin quality, healing capacity, hair, and the trajectory of aging.
This pocket reference distills the skin–endocrine system for working clinicians. It covers the physiology, the patterns worth recognizing in an aesthetic consult, and the evidence behind key interventions. Those interventions range from topical retinoids and hormone therapy to regenerative approaches like microneedling, PRP, and peptide-based topicals.
It is deliberately concise: a reference designed to be consulted between patients, with tables and decision points rather than long prose, and citations for every recommendation.
What you'll learn
- How each major hormone axis (estrogen, androgen, thyroid, cortisol, GH/IGF-1, insulin) manifests in skin and hair
- Recognizing endocrine patterns in the aesthetic consult — when a cosmetic complaint is a hormonal signal
- The evidence for hormone-related interventions in skin aging, from topical estrogens to systemic therapy
- Where regenerative techniques (PRP, microneedling, peptide topicals) have data — and where they don't
- A practical framework for integrating endocrine assessment into aesthetic practice safely
Who it's for
- Dermatologists, aesthetic physicians, and nurse injectors who want the endocrine context behind what they see
- Endocrinologists and primary-care clinicians fielding skin and aging questions
- Trainees who want a fast, referenced orientation to a genuinely interdisciplinary field
Frequently asked questions
Is this a textbook or a quick reference?
A quick reference. It is formatted as a pocket guide — concise sections, tables, and decision points — meant to be consulted in the flow of clinical work rather than read cover to cover.
Does it cover specific product or brand recommendations?
No. It covers intervention classes and the evidence behind them. Brand selection is left to clinical judgment and local availability.
What's inside
- 1Part I · Foundations
- 21. What is regenerative endocrinology?
- 32. The aging endocrine system
- 43. Peptides & bioregulators
- 54. Circadian & neuroendocrine timing
- 6Part II · The organs of aging
- 75. The skin as an endocrine organ
- 86. The skin as a neuro-immuno-endocrine organ
- 97. The endocrine atlas of skin
- 108. The skin–glucocorticoid axis
- 119. Estrogen & skin aging
- 1210. Endocrine disruptors, clean beauty & the skin
- 1311. Adipose tissue as an endocrine organ
- 1412. The gut–endocrine axis
- 1513. Inflammaging & metabolic aging
- 16Part III · Interventions
- 1714. Hormone optimization
- 1815. Peptides & bioregulators for regeneration
- 1916. The gut toolkit
- 2017. Supplements & senotherapeutics
- 2118. Lifestyle & circadian optimization
- 22Part IV · Frontier & practice
- 2319. Regenerative organ & tissue replacement
- 2420. Putting it together
Preview
Free sampleThis is a free preview. Purchase the book above to download the full PDF.
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