This essay presents recent estimates of average heights for different regions of Argentina during the period 1850–1950. This evidence, taken from registers of prisoners and military recruits, serves to question some traditional views of Argentine economic growth based on income and wage data. The essay suggests that the era of liberal progress resulted in less welfare among the lower classes than is usually assumed. A similar situation occurred during the agrarian-export growth of the first decade of the 20th century. In contrast, the period known as the «great delay» wit- nessed notable improvements in biological welfare, particularly during the 1930s. In addition, height estimates indicate that during WWII and the first Peronist administrations there was a nutritional setback in the Buenos Aires industrial belt. Data on the provincial distribution of heights for the 1920s show an important degree of regional inequality.