Hair loss

Pattern hair loss is best understood not as a genetic or androgen-driven condition, but as a bioenergetic disorder rooted in systemic metabolic stress and local tissue degeneration. 3 The mainstream model, which blames dihydrotestosterone (DHT) for follicular miniaturization, is a biological paradox because androgens are known to convert vellus hairs into terminal hairs elsewhere on the body. 2 Danny Roddy has argued that the dominance of this theory is an artifact of pharmaceutical marketing, specifically Merck’s development of finasteride, which effectively terminated alternative research pathways. 4 Even James B. Hamilton, the originator of the androgen hypothesis in 1942, acknowledged that the quantities of androgens required for baldness were likely less than those secreted by normal young adult males. 4

The core pathology involves a shift away from oxidative metabolism, leading to hypoxia and a cascade of inflammatory and fibrotic changes in the scalp. 1 Roddy highlights that mast cells are found in significantly higher numbers in balding vertex scalp compared to non-balding occipital scalp, where they degranulate and contribute to parafollicular fibrosis, the dissolution of subcutaneous scalp fat, and the accumulation of mucopolysaccharides. 1 This chronic inflammation damages the hair follicle, causing it to enter a prolonged telogen phase, which Roddy reframes not as a resting phase but as a pre-regenerative phase following injury. 1 The resulting oxidative stress and mitochondrial dysfunction directly enhance hair cell death, creating a self-perpetuating cycle of tissue degeneration. 6

Ray Peat and Georgi Dinkov emphasize that the hormonal profile of the balding scalp is dominated by stress hormones rather than androgens. 7 Dinkov notes that balding individuals tend to have high levels of estrogen and prolactin in the scalp, both of which are known to destroy the follicle. 7 Peat observed that topical DHEA and copper solutions could slowly regenerate hair, while Dinkov points to a study where administering supraphysiological testosterone to women actually regrew hair, directly contradicting the androgen hypothesis. 2 Roddy synthesizes this by explaining that when thyroid function is suppressed, the gonads produce less DHT, and the body compensates by ramping up adrenal output of DHEA as a protective mechanism against cortisol. 2 The elevated DHEA found in the balding scalp is thus a marker of hyperadrenalism and systemic stress, not the cause of the hair loss itself. 2

This systemic energy deficiency also manifests in the brain, which Roddy proposes is intrinsically linked to scalp hair patterning. 5 He cites evidence that aberrant scalp hair directional patterning is associated with problems in early brain development, and that conditions of cerebral atrophy, such as Cushing’s disease with its hypercortisolism, are related to androgenic alopecia. 5 The brain’s reliance on sugar means that insulin resistance and the shift to free fatty acid oxidation during stress have a devastating effect on the cerebral cortex, mirroring the metabolic failure occurring in the scalp. 5 Roddy suggests that the high prevalence of digestive issues in those losing hair further supports a picture of systemic dysregulation. 10

Addressing hair loss therefore requires a multi-faceted anti-fibrotic and pro-metabolic strategy rather than a single targeted agent. 6 Roddy points to substances like apigenin and naringenin, which downregulate transforming growth factor beta-1 (TGF-β1) and exhibit anti-fibrogenic effects, as well as foundational interventions like vitamin D, calcium, and aspirin to lower parathyroid hormone (PTH), prolactin, and the pro-fibrotic hormone aldosterone. 2 Peat’s framework suggests that restoring efficient oxidative metabolism through thyroid support and a diet low in polyunsaturated fats addresses the root cause, allowing the follicle to escape the chronic inflammatory state that forces it into a perpetual cycle of damage and failed regeneration. 2