While consumers may be more shocked by pink slime or the feeding of Prozac to poultry, the routine feeding of millions of pounds of human antibiotics to chickens presents a much graver threat.

Scientists suggest that the link between consuming poultry and cancer spread may be due to carcinogens in cooked meat. For unknown reasons, these carcinogens build up more in the muscles of chickens and turkeys than in those of other animals.

High levels of stress can lead to weakened immunity, rendering animals much more susceptible to disease. This makes the average poultry factory farm a hotbed for outbreaks of avian flu.

While positive mental states may be associated with less stress and more resilience to infection, positive well-being might also be accompanied by a healthy lifestyle.

Cholesterol - which you get from eating too much of the wrong kind of fat - doesn't just help clog arteries in the brain, it may also help to seed the amyloid plaques that riddle the brain tissue of Alzheimer's victims.

One of the worst things you can do if you're worried about breast cancer is to cook beef, pork, fish or poultry at a high temperature - which includes frying, grilling and roasting.