Foie gras is produced by force-feeding ducks and geese until their livers swell to 10 times normal size; the practice has been banned in 16 countries and faces growing opposition worldwide.
Force feeding ducks and geese for foie gras induces a state of hepatic steatosis — pathological liver enlargement that impairs normal physiology. Birds experience difficulty walking due to abdominal distension, labored breathing, and heat intolerance. The feeding tube insertion itself causes esophageal trauma. Farmed birds cannot engage in natural foraging, social, and water-bathing behaviors. The product of the process is a disease state — a deliberately created liver failure — presented as a culinary delicacy.