Hard Ancestral Diet

Weston A. Price's jaw development theory in practice

Eating exclusively tough, minimally processed foods — bone-in meat, raw fibrous vegetables, hard cheeses, whole nuts — based on Weston A. Price's research showing pre-industrial populations had wider palates, better jaw development, and fewer dental problems than modern Western populations. The hypothesis: modern soft diets deprive the jaw of mechanical stimulation needed for full structural development. CONTROVERSY: The scientific consensus is that jaw development is largely complete by the late teens, making dietary changes minimally impactful on adult bone structure. Price's research methodology has also been widely criticized. The diet may improve dental health and masseter development but dramatic skeletal changes in adults are not supported by evidence.