 Examination of the remains indicates steady population growth over the history of the Beixin people, as well as a steady increase in lifespan, which suggests improvements in nutrition and health.Chemical analysis of the abundant pottery shards found at the sites indicates that pork and millet were the staples of the Beixin diet, supplemented by venison, chicken, eggs, and a plentiful assortment of fruits and vegetables.This represents a broadly varied and very nutritious diet by Neolithic standards.