A wide-ranging history of rickets tracks the disease¿s emergence, evolution, and eventual treatment¿and exposes the backstory behind contemporary worries about vitamin D deficiency. Rickets, a childhood disorder that causes soft and misshapen bones, transformed from an ancient but infrequent threat to a common scourge during the Industrial Revolution. Factories, mills, and urban growth transformed the landscape. Malnutrition and insufficient exposure to sunlight led to severe cases of rickets across Europe and the United States, affecting children in a variety of settings: dim British cities and American slave labor camps, moneyed households and impoverished ones. By the late 1800s, it was one of the most common pediatric diseases, seemingly an intractable consequence of modern life. Starved for Light offers the first comprehensive history of this disorder. Tracing the efforts to understand, prevent, and treat rickets¿first with the traditional remedy of cod liver oil, then with the ap