Foie gras, translated literally from French means "fatty liver" and is considered a delicacy by many. French cuisine, certainly, wouldn't be what it is without it. But it's also a highly controversial food, considered by many to be cruel to animals, due to the force-feeding of ducks and geese. However, the other concern is the nutritional value of liver that has been fattened up with a mash of oil and genetically modified poor quality corn. This is certainly a food to avoid for your health.
Source: Times Online April 22, 2010; Telegraph.co.uk April 16, 2010