The emergence and spread of virulent strains of avian influenza has been attributed by experts to the intensely overcrowded, unsanitary, and stressful conditions that often characterize large-scale factory farming in industrialized agriculture.
From Michael Greger
Mental health can be just as important as physical health - and major depression is one of the most commonly diagnosed mental illnesses.
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.
Up to a thousand milligrams of caffeine is considered safe for most people, which translates into about 10 cups of coffee a day.
Tobacco smoke contains chemicals that weaken the body's immune system, making it more susceptible to disease and handicapping its ability to destroy cancer cells.
One of the reasons it's so difficult to study the relationship between diet and disease is because many dietary behaviors are associated with non-dietary behaviors.
Despite the growing evidence of health benefits associated with coffee consumption, I still don't recommend my patients drink it - not because it's not healthy, but because there are even healthier choices.
Sick animals can lead to sick people.
Though pigs have been proven susceptible to a porcine spongiform encephalopathy, the National Pork Producers Council claims that no naturally occurring cases of 'mad pig' disease have ever been discovered.
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