Sexual Health, Libido, and Testosterone
An Evidence-Based Guide to Optimization, Beyond the Hype
About this volume
Sexual Health, Libido, and Testosterone is Book J2 of The Performance & Human Physiology Encyclopedia — a 93-volume, university-level library on the real hormonal levers, past the myths and the boosters. It is written for women and men managing hormonal health, and the professionals guiding them: deep enough that a professional already trained in the field keeps learning, structured clearly enough that a motivated reader can follow every step.
How this book is written
- University level, without dilution. Exact scientific terminology, defined at first use — mechanisms, not just conclusions.
- Myths tested against the evidence. Where a popular claim does not survive the evidence, the book says so — and shows why.
- References at the end of every chapter. Sources cited in APA 7 style, plus a master bibliography.
For general information and education only; not medical advice. Consult a qualified health professional before acting on its content.
Read an excerpt
From Chapter 1 — The Landscape: Sexual Health, Libido, and Testosterone, Honestly
"No corner of health is sold harder than this one. 'Boost your testosterone,' 'fix your low T,' 'reclaim your drive' — the promises are everywhere, and most of them are wrong. The honest story is more useful: libido and sexual function are biopsychosocial, testosterone genuinely matters but is wildly over-blamed and over-marketed, and the levers that actually work are the unglamorous ones. This book is about the real signal in a very noisy market."
Sexual health, libido, and testosterone are among the most searched, most marketed, and most misunderstood topics in all of health. An enormous industry promises to "optimize" testosterone with supplements ("T-boosters"), to cure "low T" at wellness clinics, and to restore desire with pills and protocols. Much of it is overstated; some is unsafe; and the genuine, evidence-based core is drowned out.
This book — J2, the second in the Netritious collection on hormonal, sexual, and reproductive health — is a rigorous, honest guide to sexual health, libido, and testosterone across the lifespan, for everyone: men and women navigating their own health, athletes and active people, and the coaches, dietitians, nurses, and clinicians who support them. It is the companion to J1 (female hormonal health) and cross-links to A7 (the endocrine system), I1 (cardiovascular health), I2 (insulin/metabolic health), H3 (ergogenic supplements), I9 (mental health), and L1 (sleep).
A grounding truth shapes everything that follows:
Libido and sexual function are biopsychosocial — shaped by hormones, blood vessels, the brain, mood, stress, sleep, relationships, and context together. Testosterone matters, but it is one input among many and is routinely over-blamed and over-marketed. The most powerful modifiable levers are unglamorous — body composition, energy availability, sleep, exercise, stress, and correcting nutrient deficiencies — not "T-boosters." Where there is true disease (hypogonadism, erectile dysfunction, a desire disorder), diagnosis and treatment are medical (this is Book N4): nutrition and lifestyle complement, never replace, that care.
What is inside
The 13 chapters of this volume.
- 01
The Landscape: Sexual Health, Libido, and Testosterone, Honestly
- 02
Testosterone and the Endocrinology of Libido
- 03
The Sexual Response and Desire: A Biopsychosocial Model
- 04
Low Testosterone (Hypogonadism): Real vs. Overdiagnosed
- 05
Erectile and Sexual Dysfunction
- 06
Low Libido and Desire Disorders
- 07
The Foundations: Body Composition, Energy, and the Big Levers
- 08
Exercise, Sleep, and Stress
- 09
Micronutrients and Diet for Testosterone and Sexual Health
- 10
Supplements and "T-Boosters": The Honest Evidence
- 11
Testosterone Replacement Therapy (TRT) and Medical Treatment in Context
- 12
Aging, "Andropause," PEDs, and Population Nuances
- 13
Putting It All Together: An Evidence-Based Framework
Volume details
Topics covered
- testosterone and libido guide
- low testosterone diagnosis
- erectile dysfunction and heart health
- testosterone supplements evidence
- TRT and fertility guide
- low libido causes and treatment
- male hormone health science
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