Economic history of the United Kingdom diets with nutritional deficiency. The lack of vegetables and fruits in their diets caused a deficiency in vitamin C, sometimes resulting in scurvy. Trade and industry flourished in the 16th century, making England more prosperous and improving the standard of living of the upper and middle classes. However, the lower classes did not benefit much and did not always have enough food. As the English population was fed by its own agricultural produce, a series of bad harvests in the 1590s caused widespread distress. In the 17th century the food supply improved. England had no food crises from 1650 to
Scurvy caused by ptomaine, a waste product of bacteria, particularly in tainted tinned meat. Infantile scurvy emerged in the late 19th century because children were being fed pasteurized cow's milk, particularly in the urban upper class. While pasteurization killed bacteria, it also destroyed vitamin C. This was eventually resolved by supplementing with onion juice or cooked potatoes. By the early 20th century, when Robert Falcon Scott made his first expedition to the Antarctic (1901–1904), the prevailing theory was that scurvy was caused by "ptomaine poisoning", particularly in tinned meat. However, Scott discovered that a diet of fresh meat from Antarctic seals