Why does asthma hate America?
Children who eat a Mediterranean diet have a lower risk of developing asthma, but eating three or more burgers a week is linked to a higher risk, research suggests.
Researchers looked at 50,000 children from 20 countries.
Writing in the journal Thorax, they said eating fruit, vegetables and fish appeared to protect against asthma.
But they said eating burgers could be linked to other unhealthy habits, which may be the real trigger factor.
