Among the headlines that turn up on a Google search today:
Coffee and tea to the rescue in minimizing the spread of flesh eating bacteria
Tea Time; Drinking Beverage May Half MRSA Superbug Nostril Infection
Coffee and tea: MRSA fighters
Tea and coffee help fight superbug
Reminder: these headlines are based on an observational study, which can’t prove cause and effect. So all these statements – or even hints – of a causal link – are wrong.
If you need help understanding the limitations of observational studies, read our primer on association versus causation.