A global study of more than 400,000 children found a 39 percent increased risk of severe asthma when three or more servings of fast food were consumed each week. In contrast, three or more servings of fresh fruit each week provided some protection against asthma.

The research also demonstrated similar findings for junk food consumption and the risk for eczema and rhinoconjunctivitis.

"Our results suggest that fast food consumption may be contributing to the increasing prevalence of asthma, rhinoconjunctivitis, and eczema in adolescents and children," researchers, Innes Asher of the University of Auckland in New Zealand and Hywel Williams of the Centre for Evidence Based Dermatology at Britain’s University of Nottingham, wrote. If cause and effect are proved, they said, "then the findings have major public health significance owing to the rising consumption of fast foods globally."

It appears that the American invention of fast food is significantly undermining worldwide health.