Can sugar taxes help beat the globesity bulge?

France’s sugar tax has been in place for years, Mexico’s is in full swing and Britain’s is on its way.

As the obesity crisis spreads rapidly across the globe, taxes are touted one of the methods that could fight it.  But do they actually work?

Do they incentivise reformulation or does industry simply pass on the extra cost to the consumer? And if that’s the case, do consumers then buy less because of the higher price – or does it just leave people out of pocket?