(Cosmopolitan) - You know when you've got a wine hangover. Not only because you can remember necking a full bottle (and the rest) the night before, but that familiar pounding of the head is a surefire sign you made the rookie error of going down the wine route. 

While some people swear the heaviness of red wine gives them a worse hangover, others insist the acidity in white wine plays havoc with their stomach the next day - so which colour wine really causes the worst hangover?

Luckily, someone scientific has looked into the issue for us, and has provided the answer to this burning question. According to ABC, Professor Steve Allsop from the National Drug Research Institute in Perth, Australia, the strength of your hangover is down to things called congeners.