What is the Origin of Testosterone Facial Structure?

This concept is derived from developmental biology and forensic anthropology, focusing on the powerful morphogenic role of sex hormones on craniofacial growth. The term links the specific hormone, "testosterone," to the resulting "facial structure" to emphasize the direct biological causation of sexual dimorphism in appearance. It is a tangible, visible marker of hormonal influence.

What is the Mechanism of Testosterone Facial Structure?

Testosterone acts on androgen receptors in osteoblasts and periosteal cells, stimulating increased bone deposition and remodeling, particularly in the areas responsible for masculine features. Beyond bone, it influences subcutaneous fat distribution and muscle mass, further defining the facial contours. The mechanism is a direct, long-term anabolic effect on the skeletal and soft tissues of the head and face.

Testosterone Facial Structure ∞ Area

Testosterone Facial Structure

Meaning

The set of secondary sexual characteristics in the facial skeleton and soft tissues that are influenced and shaped by the organizational and activational effects of testosterone, primarily during puberty. These features include increased mandibular length, a more pronounced chin, and a prominent brow ridge, contributing to a perceived masculine facial phenotype. The hormonal milieu directly sculpts the skeletal architecture of the face.