We are losing the war on obesity so why is a sugar tax so hard to swallow

The topic of a sugar tax on fizzy drinks has been the subject of debate in many countries, with some nations adopting a form of tax.
The Government here is waiting for more concrete evidence on whether a tax works; but, with our growing obesity problem, do we need action now?
Pharmacy Today reporter Georgia Merton weighs up the pros and cons of taxing fizzy drinks