The most practical guide to thyroid function beyond TSH — covering the genetics of thyroid hormone conversion, autoimmune thyroid conditions, and why standard thyroid tests often miss the full picture. Relevant to TSHR and THRA research.
Kharrazian argues that most persistent hypothyroid symptoms in patients "on therapy" reflect non-thyroid pathology — Hashimoto's autoimmunity, poor T4→T3 conversion, reverse-T3 dominance, adrenal cortisol imbalance, or gut inflammation — and walks through the labs and interventions for each pattern.
A cult reference among functional-medicine clinicians and patients — considered the standard "second-opinion" text on thyroid symptoms unresolved by standard TSH-based care.
These peer-reviewed studies connect to the core ideas in this book. Each result has been scored for reliability.
Practical, research-based guide to testosterone optimization — covering the HPA axis, SHBG, free testosterone, and the lifestyle and clinical factors that influence the androgen system. Relevant to AR, LEPR, and testosterone pathway research.
Covers the full endocrine system with a focus on evidence-based lifestyle approaches to hormonal balance — testosterone, estrogen, cortisol, thyroid, and insulin. Relevant to ESR1, TSHR, LEPR, and CYP17A1 research.
Covers adaptogen research including ashwagandha, rhodiola, and phosphatidylserine in the context of HPA axis support. More practical and supplement-focused than the physiology books — relevant to cortisol management strategies for FKBP5 CT carriers.