Maybe the chemicals in fast food are at least part of the problem. With all the effects on us of chemicals, why do researchers so rarely think about it?
http://www.sciencedaily.com/releases/2009/01/090127083638.htm
ScienceDaily (Jan. 28, 2009) — Many studies have shown that breastfeeding appears to reduce the chance of children developing asthma. But a newly published study led by a University of Alberta professor has found that eating fast food more than once or twice a week negated the beneficial effects that breastfeeding has in protecting children from the respiratory disease.
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The research confirmed the findings of many other studies about the benefits of breastfeeding in relation to asthma. Kozyrskyj et al. found that breastfeeding for too short a time was linked to a higher risk of asthma, or conversely that children exclusively breastfed 12 weeks or longer as infants had a lower risk.
"But this beneficial effect was only seen in children who did not consume fast food, or only occasionally had fast food," she added.
More than half the children studied ate fast food more than twice a week.
The researchers suggested the prevalence of fast food in today's society may explain why asthma rates keep rising even though more mothers are breastfeeding.
The group did not look at why fast food might cause asthma. But the authors suggest the high fat content, and high salt levels (which can increase twitchy airways and wheezing) may be to blame.
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