What’s the difference between food poisoning and gastro? A gut expert explains

If you’ve got a dodgy tummy, diarrhoea and have been vomiting, it’s easy to blame a “tummy bug” or “off food”.
But which is it? Gastro or food poisoning?
What’s the difference anyway?
What’s gastroenteritis?
Gastroenteritis, or gastro for short, is a gut infection caused by a...