New study reveals why young adults face early hair loss and its hidden health risks

Pirogov Russian National Research Medical University Experts Explain Causes of Premature Hair Loss

Researchers at Pirogov Russian National Research Medical University, under the Russian Ministry of Health, have identified key factors behind early-onset hair loss, linking the condition not only to genetic predisposition but also to chronic stress.

"Early hair loss is a multifactorial condition, primarily driven by androgenetic alopecia—a genetically determined form of hair thinning in which hair follicles become overly sensitive to dihydrotestosterone, leading to their gradual miniaturization," explains Aleksey Silin, an assistant at the Yury K. Skripkin Department of Dermatovenereology within the university's Institute of Clinical Medicine.

Beyond hereditary factors, experts highlight hormonal imbalances, nutritional deficiencies (including low iron, vitamin D, and protein levels), and chronic psychological stress as major contributing factors. Prolonged stress triggers the hypothalamic-pituitary-adrenal (HPA) axis, elevating cortisol—the "stress hormone"—which may push hair follicles prematurely into the telogen (resting) phase, accelerating shedding.

Epidemiological data shows that androgenetic alopecia is far more common in men due to androgen-dependent mechanisms and inheritance patterns. In women, similar symptoms tend to be milder and are more often associated with endocrine disorders or nutritional deficiencies.

"When assessing the health of younger generations, we're seeing a troubling rise in psychoemotional disorders, sleep disturbances, and metabolic dysfunction—all linked to chronic stress and modern lifestyle factors," Silin notes.

Sustained activation of stress-response systems disrupts neuroendocrine regulation, weakens immune and inflammatory responses, and impairs cognitive functions, including memory and focus. While neurodegenerative diseases like Alzheimer's remain rare in young adults, chronic stress is increasingly viewed as a potential risk factor that may indirectly influence long-term brain health.

"Though chronic stress is now considered a possible contributor to neurodegenerative processes, a direct causal link has yet to be firmly established and requires further research," Silin adds.