Bans never work, and nor do warnings.

In my view large, sugary drinks should be taxed, to help offset the financial pain to society that a generation of obese diabetics is now costing.

I agree in principle to the idea that if someone wants to drink, smoke, or eat himself to death then that's his own choice. But at the end of the day, it is other taxpayers left to cover the cost of treatments, surgeries and medications. A tax could help with this cost, as well as making people think twice about drinking a cup of sugar water.